Release 4 FHIR CI-Build

This page is part of the Continuous Integration Build of FHIR Specification (v4.0.1: R4 - Mixed Normative and STU ) in it's permanent home (it will always (will be available incorrect/inconsistent at this URL). The current version which supercedes this version is 5.0.0 . For a full list of available versions, see times).
See the Directory of published versions . Page versions: R5 R4B R4 R3

Codesystem.profile.xml

Example StructureDefinition/CodeSystem (XML)

Maturity Level : N/A
Responsible Owner: Vocabulary Terminology Infrastructure Work Group Standards Status : Informative Compartments : Not linked to any No defined compartments

Raw XML ( canonical form + also see XML Format Specification )

Jump past Narrative

StructureDefinition for codesystem

<?xml version="1.0" encoding="UTF-8"?>


  
  
    
  
  
    
    
      
        
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<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="CodeSystem"/> 
  <meta> 
    <lastUpdated value="2025-11-08T11:23:29.301+00:00"/> 
  </meta> 
  <text> 
    <status value="generated"/> 
    <div xmlns="http://www.w3.org/1999/xhtml">
      <table border="0" cellpadding="0" cellspacing="0" style="border: 0px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align:
       top;">
        <tr style="border: 1px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align:

         top">
          <th class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom:
           3px">
            <a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="The logical name of the element">Name</a>           </th>           <th class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom:
           3px">
            <a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Information about the use of the element">Flags</a>           </th>           <th class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom:
           3px">
            <a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Minimum and Maximum # of times the element can appear in the instance">Card.</a>           </th>           <th class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom:
           3px; width: 100px">
            <a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Reference to the type of the element">Type</a>           </th>           <th class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; padding-top: 3px; padding-bottom:
           3px">
            <a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Additional information about the element">Description &amp; Constraints</a>             <span style="float: right">              <a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format">                <img alt="doco" src="data:(snipped in html view)" style="background-color: inherit"/>               </a>             </span>           </th>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAJUlEQVR4Xu3IIQEAAAg
          DsHd9/w4EQIOamFnaBgAA4MMKAACAKwNp30CqZFfFmwAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Resource"/>  
            <span title="CodeSystem : The CodeSystem resource is used to declare the existence of and describe
             a code system or code system supplement and its key properties, and optionally define
             a part or all of its content.
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
            padding-left: 3px; padding-right: 3px; border: 1px grey solid; font-weight: bold; color:
             black; background-color: #e6ffe6
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4pxDeclares the existence of and describes a code system or code system supplement
            
            + Warning: Name should be usable as an identifier for the module by machine processing
               applications such as code generation
            
            
            Elements defined in Ancestors: 
            The logical id of the resource, as used in the URL for the resource. Once assigned, this
             value never changes., 

             a code system or code system supplement and its key properties, and optionally
             define a part or all of its content.">CodeSystem</span> 
            <a name="CodeSystem"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="versions.html#std-process" style="padding-left: 3px; padding-right: 3px; border: 1px grey solid; font-weight: bold;

             color: black; background-color: #e6ffe6; padding-left: 3px; padding-right: 3px;
             border: 1px grey solid; font-weight: bold; color: black; background-color: #e6ffe6" title="Standards Status = Normative">N</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="domainresource.html">DomainResource</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Declares the existence of and describes a code system or code system supplement
            <br/>              <span style="font-style: italic" title="cnl-0">+ Warning: Name should be usable as an identifier for the module by machine processing

               applications such as code generation</span> 
            <br/>              <span style="font-style: italic" title="csd-1">+ Rule: Within a code system definition, all the codes SHALL be unique</span>             <br/>              <span style="font-style: italic" title="csd-2">+ Warning: If there is an explicit hierarchy, a hierarchyMeaning should be provided</span>             <br/>              <span style="font-style: italic" title="csd-3">+ Warning: If there is an implicit hierarchy, a hierarchyMeaning should be provided</span>             <br/>              <span style="font-style: italic" title="csd-4">+ Rule: If the code system content = supplement, it must nominate what it's a supplement

               for</span> 
            <br/>              <span style="font-style: italic" title="csd-7">+ Guideline: caseSensitive SHOULD be provided</span>             <br/>              <br/>  Elements defined in Ancestors:             <a href="resource.html#Resource" title="The logical id of the resource, as used in the URL for the resource. Once assigned,

             this value never changes.">id</a> , 

            <a href="resource.html#Resource" title="The metadata about the resource. This is content that is maintained by the infrastructure.
             Changes to the content might not always be associated with version changes to the resource., 
            A reference to a set of rules that were followed when the resource was constructed, and
             which must be understood when processing the content. Often, this is a reference to an
             implementation guide that defines the special rules along with other profiles etc., 
            , 
            A human-readable narrative that contains a summary of the resource and can be used to
             represent the content of the resource to a human. The narrative need not encode all the
             structured data, but is required to contain sufficient detail to make it &quot;clinically
             safe&quot; for a human to just read the narrative. Resource definitions may define what
             content should be represented in the narrative to ensure clinical safety., 
            These resources do not have an independent existence apart from the resource that contains
             them - they cannot be identified independently, and nor can they have their own independent
             transaction scope., 

             Changes to the content might not always be associated with version changes to the
             resource.">meta</a> , 
            <a href="resource.html#Resource" title="A reference to a set of rules that were followed when the resource was constructed,

             and which must be understood when processing the content. Often, this is a reference
             to an implementation guide that defines the special rules along with other profiles
             etc. For DomainResources, if more than one implicitRules policy applies, additional
             policies may be conveyed using the [additionalImplicitRules](https://build.fhir.org/ig/HL7/fh
            ir-extensions/StructureDefinition-additionalImplicitRules.html) extension.">implicitRules</a> , 
            <a href="resource.html#Resource" title="The base language in which the resource is written.">language</a> ,             <a href="domainresource.html#DomainResource" title="A human-readable narrative that contains a summary of the resource and can be used

             to represent the content of the resource to a human. The narrative need not encode
             all the structured data, but is required to contain sufficient detail to make it
             &quot;clinically safe&quot; for a human to just read the narrative. Resource definitions
             may define what content should be represented in the narrative to ensure clinical
             safety.">text</a> , 
            <a href="domainresource.html#DomainResource" title="These resources do not have an independent existence apart from the resource that

             contains them - they cannot be identified independently, nor can they have their
             own independent transaction scope. This is allowed to be a Parameters resource
             if and only if it is referenced by a resource that provides context/meaning.">contained</a> , 

            <a href="domainresource.html#DomainResource" title="May be used to represent additional information that is not part of the basic definition
             of the resource. To make the use of extensions safe and manageable, there is a strict
             set of governance  applied to the definition and use of extensions. Though any implementer
             can define an extension, there is a set of requirements that SHALL be met as part of the
             definition of the extension., 

             of the resource. To make the use of extensions safe and managable, there is a strict
             set of governance applied to the definition and use of extensions. Though any implementer
             can define an extension, there is a set of requirements that SHALL be met as part
             of the definition of the extension.">extension</a> , 

            <a href="domainresource.html#DomainResource" title="May be used to represent additional information that is not part of the basic definition
             of the resource and that modifies the understanding of the element that contains it and/or
             the understanding of the containing element's descendants. Usually modifier elements provide
             negation or qualification. To make the use of extensions safe and manageable, there is
             a strict set of governance applied to the definition and use of extensions. Though any
             implementer is allowed to define an extension, there is a set of requirements that SHALL
             be met as part of the definition of the extension. Applications processing a resource
             are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource
             (including cannot change the meaning of modifierExtension itself).
          
        

        
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            CodeSystem.url : An absolute URI that is used to identify this code system when it is
             referenced in a specification, model, design or an instance; also called its canonical
             identifier. This SHOULD be globally unique and SHOULD be a literal address at which at
             which an authoritative instance of this code system is (or will be) published. This URL
             can be the target of a canonical reference. It SHALL remain the same when the code system
             is stored on different servers. This is used in [Coding](datatypes.html#Coding).system.
            
          
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           solid; padding:0px 4px 0px 4px
            
          
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           solid; padding:0px 4px 0px 4px
        

        
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            CodeSystem.identifier : A formal identifier that is used to identify this code system
             when it is represented in other formats, or referenced in a specification, model, design
             or an instance.
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
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           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4pxAdditional identifier for the code system (business identifier)
            
          
        

        
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            CodeSystem.version : The identifier that is used to identify this version of the code
             system when it is referenced in a specification, model, design or instance. This is an
             arbitrary value managed by the code system author and is not expected to be globally unique.
             For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available.
             There is also no expectation that versions can be placed in a lexicographical sequence.
             This is used in [Coding](datatypes.html#Coding).version.
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
        

        
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            TRgwAAAABJRU5ErkJggg== 
            CodeSystem.name : A natural language name identifying the code system. This name should
             be usable as an identifier for the module by machine processing applications such as code
             generation.
            
          
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           padding:0px 4px 0px 4px
            
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
        

        
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           solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iV
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            TRgwAAAABJRU5ErkJggg== 
            
            
          
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           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
        

        
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            TRgwAAAABJRU5ErkJggg== 
            CodeSystem.status : The date (and optionally time) when the code system resource was created
             or revised.
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4pxdraft | active | retired | unknown
            
             (
            )
          
        

        
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           solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iV
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            TRgwAAAABJRU5ErkJggg== 
            CodeSystem.experimental : A Boolean value to indicate that this code system is authored
             for testing purposes (or education/evaluation/marketing) and is not intended to be used
             for genuine usage.
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
        

        
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            TRgwAAAABJRU5ErkJggg== 
            CodeSystem.date : The date  (and optionally time) when the code system was published.
             The date must change when the business version changes and it must change if the status
             code changes. In addition, it should change when the substantive content of the code system
             changes.
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
        

        
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iV
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            TRgwAAAABJRU5ErkJggg== 
            CodeSystem.publisher : The name of the organization or individual that published the code
             system.
            
          
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           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
        

        
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            CodeSystem.contact : Contact details to assist a user in finding and communicating with
             the publisher.
            
          
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           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4pxContact details for the publisher
            
          
        

        
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           solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iV
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            TRgwAAAABJRU5ErkJggg== 
            CodeSystem.description : A free text natural language description of the code system from
             a consumer's perspective.
            
          
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           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
        

        
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
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            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==
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            ad4Hb6dXv3u0f3v1ObEgfPTlerJiP3w1v79+e7OkPrfrfnjuNOtZPrpydaxa+/YrvvdpP779ZxvFPvnwKKBQaFyF/369M2vdaqHRP
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            szv3rye3LiPvnv+3MjPDasKiIS/789/3x2f747eXDg+7Mifvu0tu7f+/QkfDTnPXWmPrjsvrjtPbPgrqZW+/QlPz48K2EMv36866O
            UPvowat8Ivvgq/Pbrvzgq/PguvrgrqN0Gda2evfYm9+7d/rpw9q6e/LSku/Rl/XVl/LSlfrkt+zVqe7Wqv3x1/bNffbOf59wFdS6i
            f3u0vrqyP3owPvepfXQivDQkO/PkKh9K7STVf779P///wD/ACH5BAEKAH8ALAAAAAAQABAAAAemgH+CgxeFF4OIhBdKGwFChYl/hY
            wbdkoBPnaQkosbG3d3VEpSUlonUoY1Gzo6QkI8SrGxWBOFG4uySgY5ZWR3PFy2hnaWZXC/PHcPwkpJk1ShoHcxhQEXSUmtFy6+0iS
            FVResrjoTPDzdcoU+F65CduVU6KAhhQa3F8Tx8nchBoYuqoTLZoAKFRIhqGwqJAULFx0GYpBQeChRIR4TJm6KJMhQRUSBAAA7 

             of the resource and that modifies the understanding of the element that contains
             it and/or the understanding of the containing element's descendants. Usually modifier
             elements provide negation or qualification. To make the use of extensions safe
             and managable, there is a strict set of governance applied to the definition and
             use of extensions. Though any implementer is allowed to define an extension, there
             is a set of requirements that SHALL be met as part of the definition of the extension.
             Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or
             DomainResource (including cannot change the meaning of modifierExtension itself).">modifierExtension</a> 
            <br/>              <span title="uml.html#interfaces">Interfaces Implemented: </span>             <a href="metadataresource.html#MetadataResource" title="Common Interface declaration for conformance and knowledge artifact resources.">MetadataResource</a>           </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.url : An absolute URI that is used to identify this code system when

             it is referenced in a specification, model, design or an instance; also called
             its canonical identifier. This SHOULD be globally unique and SHOULD be a literal
             address at which an authoritative instance of this code system is (or will be)
             published. This URL can be the target of a canonical reference. It SHALL remain
             the same when the code system is stored on different servers. This is used in [Coding](dataty
            pes.html#Coding).system.">url</span> 
            <a name="CodeSystem.url"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
            <a href="conformance-rules.html#constraints" style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold;

             color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px;
             border: 1px maroon solid; font-weight: bold; color: #301212; background-color:
             #fdf4f4;" title="This element has or is affected by some invariants">C</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#uri">uri</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Canonical identifier for this code system, represented as a URI (globally unique)
             (Coding.system)
            <br/>              <span style="font-style: italic" title="cnl-1">+ Warning: URL should not contain | or # - these characters make processing canonical

               references problematic</span> 
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Data Type"/>              <span title="CodeSystem.identifier : A formal identifier that is used to identify this code

             system when it is represented in other formats, or referenced in a specification,
             model, design or an instance.">identifier</span> 
            <a name="CodeSystem.identifier"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#Identifier">Identifier</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Additional identifier for the code system (business identifier)
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.version : The identifier that is used to identify this version of the

             code system when it is referenced in a specification, model, design or instance.
             This is an arbitrary value managed by the code system author and is not expected
             to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if
             a managed version is not available. There is also no expectation that versions
             can be placed in a lexicographical sequence. This is used in [Coding](datatypes.html#Coding).
            version.">version</span> 
            <a name="CodeSystem.version"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Business version of the code system (Coding.version)
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Choice of Types"/>              <span title="CodeSystem.versionAlgorithm[x] : Indicates the mechanism used to compare versions

             to determine which CodeSystem is more current.">versionAlgorithm[x]</span> 
            <a name="CodeSystem.versionAlgorithm_x_"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">How to compare versions
            <br/>  Binding:             <a href="valueset-version-algorithm.html">Version Algorithm</a>  (            <a href="terminologies.html#extensible" title="To be conformant, the concept in this element SHALL be from the specified value

             set if any of the codes within the value set can apply to the concept being communicated.
              If the value set does not cover the concept (based on human review), alternate
             codings (or, data type allowing, text) may be included instead.">Extensible</a> )
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMUlEQVR4Xu3LMQoAIBA
          Dwftr/v8GtdbqEAthAtMspJJUx9rYW8ftHwAA+NcRAAAAXplLq0BWj/rZigAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="A sequence of Unicode characters">versionAlgorithmString</span>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
        </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Data Type"/>              <span title="A reference to a code defined by a terminology system.">versionAlgorithmCoding</span>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#Coding">Coding</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
        </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.name : A natural language name identifying the code system. This name

             should be usable as an identifier for the module by machine processing applications
             such as code generation.">name</span> 
            <a name="CodeSystem.name"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
            <a href="conformance-rules.html#constraints" style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold;

             color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px;
             border: 1px maroon solid; font-weight: bold; color: #301212; background-color:
             #fdf4f4;" title="This element has or is affected by some invariants">C</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Name for this code system (computer friendly)
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.title : A short, descriptive, user-friendly title for the code system.">title</span>             <a name="CodeSystem.title"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
            <a href="languages.html#translatable" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is a candidate for being translated">T</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Name for this code system (human friendly)
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.status : The status of this code system. Enables tracking the life-cycle

             of the content.">status</span> 
            <a name="CodeSystem.status"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="conformance-rules.html#isModifier" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is a modifier element">?!</a> 
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">1..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">draft | active | retired | unknown
            <br/>  Binding:             <a href="valueset-publication-status.html">PublicationStatus</a>  (            <a href="terminologies.html#required" title="To be conformant, the concept in this element SHALL be from the specified value

             set.">Required</a> )
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.experimental : A Boolean value to indicate that this code system is

             authored for testing purposes (or education/evaluation/marketing) and no version
             of this resource will ever be intended for genuine usage.">experimental</span> 
            <a name="CodeSystem.experimental"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#boolean">boolean</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">For testing only - never for real usage
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.date : The date  (and optionally time) when the code system was last

             significantly changed. The date must change when the business version changes and
             it must change if the status code changes. In addition, it should change when the
             substantive content of the code system changes.">date</span> 
            <a name="CodeSystem.date"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#dateTime">dateTime</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Date last changed
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.publisher : The name of the organization or individual responsible for

             the release and ongoing maintenance of the code system.">publisher</span> 
            <a name="CodeSystem.publisher"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
            <a href="languages.html#translatable" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is a candidate for being translated">T</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Name of the publisher/steward (organization or individual)
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Data Type"/>              <span title="CodeSystem.contact : Contact details to assist a user in finding and communicating

             with the publisher.">contact</span> 
            <a name="CodeSystem.contact"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="metadatatypes.html#ContactDetail">ContactDetail</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Contact details for the publisher
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.description : A free text natural language description of the code system

             from a consumer's perspective.">description</span> 
            <a name="CodeSystem.description"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="languages.html#translatable" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is a candidate for being translated">T</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#markdown">markdown</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Natural language description of the code system
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Data Type"/>  
            <span title="CodeSystem.useContext : The content was developed with a focus and intent of supporting
             the contexts that are listed. These contexts may be general categories (gender, age, ...)
             or may be references to specific programs (insurance plans, studies, ...) and may be used
             to assist with indexing and searching for appropriate code system instances.
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
            padding-left: 3px; padding-right: 3px; border: 1px grey solid; font-weight: bold; color:
             black; background-color: #fff5e6
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4pxThe context that the content is intended to support
            
          
        

        
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iV
          BORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6
          EEQAAgCsPVYVAgIJrA/sAAAAASUVORK5CYII=)
            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==
            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC
            data: image/png;base64,R0lGODlhEAAQAPZ/APrkusOiYvvfqbiXWaV2G+jGhdq1b8GgYf3v1frw3vTUlsWkZNewbcSjY/DQk
            ad4Hb6dXv3u0f3v1ObEgfPTlerJiP3w1v79+e7OkPrfrfnjuNOtZPrpydaxa+/YrvvdpP779ZxvFPvnwKKBQaFyF/369M2vdaqHRP
            z58/HNh/vowufFhfroxO3OkPrluv779tK0e6JzGProwvrow9m4eOnIifPTlPDPkP78+Naxaf3v0/zowfXRi+bFhLWUVv379/rnwPv
            szv3rye3LiPvnv+3MjPDasKiIS/789/3x2f747eXDg+7Mifvu0tu7f+/QkfDTnPXWmPrjsvrjtPbPgrqZW+/QlPz48K2EMv36866O
            UPvowat8Ivvgq/Pbrvzgq/PguvrgrqN0Gda2evfYm9+7d/rpw9q6e/LSku/Rl/XVl/LSlfrkt+zVqe7Wqv3x1/bNffbOf59wFdS6i
            f3u0vrqyP3owPvepfXQivDQkO/PkKh9K7STVf779P///wD/ACH5BAEKAH8ALAAAAAAQABAAAAemgH+CgxeFF4OIhBdKGwFChYl/hY
            wbdkoBPnaQkosbG3d3VEpSUlonUoY1Gzo6QkI8SrGxWBOFG4uySgY5ZWR3PFy2hnaWZXC/PHcPwkpJk1ShoHcxhQEXSUmtFy6+0iS
            FVResrjoTPDzdcoU+F65CduVU6KAhhQa3F8Tx8nchBoYuqoTLZoAKFRIhqGwqJAULFx0GYpBQeChRIR4TJm6KJMhQRUSBAAA7 
            CodeSystem.jurisdiction : A legal or geographic region in which the code system is intended
             to be used.
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4pxIntended jurisdiction for code system (if applicable)
            
             (
            To be conformant, the concept in this element SHALL be from the specified value set if
             any of the codes within the value set can apply to the concept being communicated.  If
             the value set does not cover the concept (based on human review), alternate codings (or,
             data type allowing, text) may be included instead.)
            
          
        

        
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)
            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzIs1vtcMQAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAAE0lEQVQI12P4//8/AxMDAw
            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==
            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC
            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAR
            klEQVQ4y2P8//8/AyWAhYFCMAgMuHjx4n+KXaCv+I0szW8WpCG8kFO1lGFKW/SIjAUYgxz/MzAwMDC+nqhDUTQyjuYFBgCNmhP4Ov
            TRgwAAAABJRU5ErkJggg== 
            CodeSystem.purpose : Explanation of why this code system is needed and why it has been
             designed as it has.
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
        

        
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iV
          BORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6
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            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==
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            TRgwAAAABJRU5ErkJggg== 
            CodeSystem.copyright : A copyright statement relating to the code system and/or its contents.
             Copyright statements are generally legal restrictions on the use and publishing of the
             code system.
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
        

        
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)
            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==
            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC
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            klEQVQ4y2P8//8/AyWAhYFCMAgMuHjx4n+KXaCv+I0szW8WpCG8kFO1lGFKW/SIjAUYgxz/MzAwMDC+nqhDUTQyjuYFBgCNmhP4Ov
            TRgwAAAABJRU5ErkJggg== 
            CodeSystem.caseSensitive : If code comparison is case sensitive when codes within this
             system are compared to each other.
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
        

        
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iV
          BORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6
          EEQAAgCsPVYVAgIJrA/sAAAAASUVORK5CYII=)
            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==
            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC
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            wv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAAadEVYdFNvZnR3YXJlAFBhaW50Lk5FVCB2My41LjEwMPRyoQAAAFxJREFUOE/NjE
            EOACEIA/0o/38GGw+agoXYeNnDJDCUDnd/gkoFKhWozJiZI3gLwY6rAgxhsPKTPUzycTl8lAryMyMsVQG6TFi6cHULyz8KOjC7OIQ
            KlQpU3uPjAwhX2CCcGsgOAAAAAElFTkSuQmCC 
            CodeSystem.valueSet : Canonical reference to the value set that contains the entire code
             system.
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            (
            )
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
        

        
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAL0lEQVR42u3XsQ0AQAgCQHdl/xn8jxvYWB3JlTR0VJLa+OltBwAAYP6EEQAAgC
          sPVYVAgIJrA/sAAAAASUVORK5CYII=)
            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==
            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
            3RJTUUH3wYeFzI3XJ6V3QAAAB1pVFh0Q29tbWVudAAAAAAAQ3JlYXRlZCB3aXRoIEdJTVBkLmUHAAAANklEQVQ4y+2RsQ0AIAzDav
            7/2VzQwoCY4iWbZSmo1QGoUgNMghvWaIejPQW/CrrNCylIwcOCDYfLNRcNer4SAAAAAElFTkSuQmCC
            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAR
            klEQVQ4y2P8//8/AyWAhYFCMAgMuHjx4n+KXaCv+I0szW8WpCG8kFO1lGFKW/SIjAUYgxz/MzAwMDC+nqhDUTQyjuYFBgCNmhP4Ov
            TRgwAAAABJRU5ErkJggg== 

             the contexts that are listed. These contexts may be general categories (gender,
             age, ...) or may be references to specific programs (insurance plans, studies,
             ...) and may be used to assist with indexing and searching for appropriate code
             system instances.">useContext</span> 
            <a name="CodeSystem.useContext"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="metadatatypes.html#UsageContext">UsageContext</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">The context that the content is intended to support
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Data Type"/>              <span title="CodeSystem.jurisdiction : A legal or geographic region in which the authority that

             maintains the resource is operating.  In general, the jurisdiction is also found
             in the useContext.  The useContext may reference additional jurisdictions because
             the defining jurisdiction does not necessarily limit the jurisdictions of use.">jurisdiction</span> 
            <a name="CodeSystem.jurisdiction"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#CodeableConcept">CodeableConcept</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Jurisdiction of the authority that maintains the code system (if applicable)
            <br/>  Binding:             <a href="http://terminology.hl7.org/6.5.0/ValueSet-jurisdiction.html">Jurisdiction ValueSet</a>  (            <a href="terminologies.html#extensible" title="To be conformant, the concept in this element SHALL be from the specified value

             set if any of the codes within the value set can apply to the concept being communicated.
              If the value set does not cover the concept (based on human review), alternate
             codings (or, data type allowing, text) may be included instead.">Extensible</a> )
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.purpose : Explanation of why this code system is needed and why it has

             been designed as it has.">purpose</span> 
            <a name="CodeSystem.purpose"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="languages.html#translatable" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is a candidate for being translated">T</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#markdown">markdown</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Why this code system is defined
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.copyright : A copyright statement relating to the code system and/or

             its contents. Copyright statements are notices of intellectual property ownership
             and can include restrictions on the use and publishing of the code system.">copyright</span> 
            <a name="CodeSystem.copyright"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="languages.html#translatable" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is a candidate for being translated">T</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#markdown">markdown</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Notice about intellectual property ownership, can include restrictions on use
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.copyrightLabel : A short string (&lt;50 characters), suitable for inclusion

             in a page footer that identifies the copyright holder, effective period, and optionally
             whether rights are restricted. (e.g. 'All rights reserved', 'Some rights reserved').">copyrightLabel</span> 
            <a name="CodeSystem.copyrightLabel"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="languages.html#translatable" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is a candidate for being translated">T</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Copyright holder and year(s)
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.approvalDate : The date on which the resource content was approved by

             the publisher. Approval happens once when the content is officially approved for
             usage.">approvalDate</span> 
            <a name="CodeSystem.approvalDate"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#date">date</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">When the CodeSystem was approved by publisher
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.lastReviewDate : The date on which the resource content was last reviewed.

             Review happens periodically after approval but does not change the original approval
             date.">lastReviewDate</span> 
            <a name="CodeSystem.lastReviewDate"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#date">date</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">When the CodeSystem was last reviewed by the publisher
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Data Type"/>              <span title="CodeSystem.effectivePeriod : The period during which the CodeSystem content was

             or is planned to be in active use.">effectivePeriod</span> 
            <a name="CodeSystem.effectivePeriod"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#Period">Period</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">When the CodeSystem is expected to be used
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Data Type"/>              <span title="CodeSystem.topic : Descriptions related to the content of the CodeSystem. Topics

             provide a high-level categorization as well as keywords for the CodeSystem that
             can be useful for filtering and searching.">topic</span> 
            <a name="CodeSystem.topic"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#CodeableConcept">CodeableConcept</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">E.g. Education, Treatment, Assessment, etc
            <br/>  Binding:             <a href="valueset-definition-topic.html">Definition Topic</a>  (            <a href="terminologies.html#example" title="Instances are not expected or even encouraged to draw from the specified value

             set.  The value set merely provides examples of the types of concepts intended
             to be included.">Example</a> )
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Data Type"/>              <span title="CodeSystem.author : An individiual or organization primarily involved in the creation

             and maintenance of the CodeSystem.">author</span> 
            <a name="CodeSystem.author"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="metadatatypes.html#ContactDetail">ContactDetail</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Who authored the CodeSystem
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Data Type"/>              <span title="CodeSystem.editor : An individual or organization primarily responsible for internal

             coherence of the CodeSystem.">editor</span> 
            <a name="CodeSystem.editor"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="metadatatypes.html#ContactDetail">ContactDetail</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Who edited the CodeSystem
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Data Type"/>              <span title="CodeSystem.reviewer : An individual or organization asserted by the publisher to

             be primarily responsible for review of some aspect of the CodeSystem.">reviewer</span> 
            <a name="CodeSystem.reviewer"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="metadatatypes.html#ContactDetail">ContactDetail</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Who reviewed the CodeSystem
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Data Type"/>              <span title="CodeSystem.endorser : An individual or organization asserted by the publisher to

             be responsible for officially endorsing the CodeSystem for use in some setting.">endorser</span> 
            <a name="CodeSystem.endorser"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="metadatatypes.html#ContactDetail">ContactDetail</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Who endorsed the CodeSystem
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Data Type"/>              <span title="CodeSystem.relatedArtifact : Related artifacts such as additional documentation,

             justification, dependencies, bibliographic references, and predecessor and successor
             artifacts. If the type is `successor` or `predecessor`, the related resource must
             be a CodeSystem.">relatedArtifact</span> 
            <a name="CodeSystem.relatedArtifact"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="conformance-rules.html#constraints" style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold;

             color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px;
             border: 1px maroon solid; font-weight: bold; color: #301212; background-color:
             #fdf4f4;" title="This element has or is affected by some invariants">C</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="metadatatypes.html#RelatedArtifact">RelatedArtifact</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Additional documentation, citations, etc
            <br/>              <span style="font-style: italic" title="csd-8">+ Rule: Related artifact can't be depends-on or composed-of</span>             <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.caseSensitive : If code comparison is case sensitive when codes within

             this system are compared to each other.">caseSensitive</span> 
            <a name="CodeSystem.caseSensitive"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#boolean">boolean</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">If code comparison is case sensitive
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Reference to another Resource"/>              <span title="CodeSystem.valueSet : Canonical reference to the value set that contains all codes

             in the code system independent of code status.">valueSet</span> 
            <a name="CodeSystem.valueSet"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#canonical">canonical</a> (            <a href="valueset.html">ValueSet</a> )          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Canonical reference to the value set with entire code system
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>  
            <span title="CodeSystem.hierarchyMeaning : The meaning of the hierarchy of concepts as represented
             in this resource.
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
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           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4pxgrouped-by | is-a | part-of | classified-with
            
             (
            )
          
        

        
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           solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iV
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            TRgwAAAABJRU5ErkJggg== 

             in this resource.">hierarchyMeaning</span> 
            <a name="CodeSystem.hierarchyMeaning"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
            <a href="conformance-rules.html#constraints" style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold;

             color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px;
             border: 1px maroon solid; font-weight: bold; color: #301212; background-color:
             #fdf4f4;" title="This element has or is affected by some invariants">C</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">grouped-by | is-a | part-of | classified-with
            <br/>  Binding:             <a href="valueset-codesystem-hierarchy-meaning.html">Code System Hierarchy Meaning</a>  (            <a href="terminologies.html#required" title="To be conformant, the concept in this element SHALL be from the specified value

             set.">Required</a> )
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
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            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>  
            <span title="CodeSystem.compositional : The code system defines a compositional (post-coordination)
             grammar.
            
          
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           solid; padding:0px 4px 0px 4px
            
          
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           solid; padding:0px 4px 0px 4px
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           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
        

        
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            CodeSystem.versionNeeded : This flag is used to signify that the code system does not
             commit to concept permanence across versions. If true, a version must be specified when
             referencing this code system.
            
          
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           padding:0px 4px 0px 4px
            
          
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           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
        

        
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           solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iV
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            CodeSystem.content : The extent of the content of the code system (the concepts and codes
             it defines) are represented in this resource instance.
            
          
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           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4pxnot-present | example | fragment | complete | supplement
            
            The extent of the content of the code system (the concepts and codes it defines) are represented
             in a code system resource. (
            )
          
        

        
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            CodeSystem.supplements : The canonical URL of the code system that this code system supplement
             is adding designations and properties to.
            
          
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           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            (
            )
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
        

        
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           solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iV
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            CodeSystem.count : The total number of concepts defined by the code system. Where the
             code system has a compositional grammar, the basis of this count is defined by the system
             steward.
            
          
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           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
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           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
        

        
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            CodeSystem.filter : A filter that can be used in a value set compose statement when selecting
             concepts using a filter.
            
          
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           padding:0px 4px 0px 4px
            
          
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           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4pxFilter that can be used in a value set
            
          
        

        
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            CodeSystem.filter.code : The code that identifies this filter when it is used as a filter
             in [[[ValueSet]]].compose.include.filter.
            
          
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           solid; padding:0px 4px 0px 4px
        

        
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           solid; padding:0px 4px 0px 4px= | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | exists
            
             (
            )
            
          
        

        
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            CodeSystem.property : A property defines an additional slot through which additional information
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          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4pxAdditional information supplied about each concept
            
          
        

        
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            CodeSystem.property.code : A code that is used to identify the property. The code is used
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            CodeSystem.property.uri : Reference to the formal meaning of the property. One possible
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            CodeSystem.property.description : A description of the property- why it is defined, and
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            TRgwAAAABJRU5ErkJggg== 
            CodeSystem.property.type : The type of the property value. Properties of type &quot;code&quot;
             contain a code defined by the code system (e.g. a reference to another defined concept).
            
          
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           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4pxcode | Coding | string | integer | boolean | dateTime | decimal
            
             (
            )
          
        

        
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           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            5exg8Shl1ckRUQVaMVkQ2kCstKCEAOw== 
            CodeSystem.concept : Concepts that are in the code system. The concept definitions are
             inherently hierarchical, but the definitions must be consulted to determine what the meanings
             of the hierarchical relationships are.
            
          
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           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4pxConcepts in the code system
            
          
        

        
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           solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iV
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            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAWCAYAAADJqhx8AAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            CodeSystem.concept.code : A code - a text symbol - that uniquely identifies the concept
             within the code system.
            
          
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           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
        

        
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            TRgwAAAABJRU5ErkJggg== 
            CodeSystem.concept.display : A human readable string that is the recommended default way
             to present this concept to a user.
            
          
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           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
        

        
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           solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iV
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            TRgwAAAABJRU5ErkJggg== 
            CodeSystem.concept.definition : The formal definition of the concept. The code system
             resource does not make formal definitions required, because of the prevalence of legacy
             systems. However, they are highly recommended, as without them there is no formal meaning
             associated with the concept.
            
          
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           solid; padding:0px 4px 0px 4px
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           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
        

        
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           padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KG
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            5exg8Shl1ckRUQVaMVkQ2kCstKCEAOw== 
            CodeSystem.concept.designation : Additional representations for the concept - other languages,
             aliases, specialized purposes, used for particular purposes, etc.
            
          
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           padding:0px 4px 0px 4px
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           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4pxAdditional representations for the concept
            
          
        

        
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           solid; padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4px
            
          
          vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0
           solid; padding:0px 4px 0px 4pxHuman language of the designation
            
             (
            Instances are encouraged to draw from the specified codes for interoperability purposes
             but are not required to do so to be considered conformant. but limited to 
            )
          
        

        
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            CodeSystem.concept.designation.use : A code that details how this designation would be
             used.
            
          
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           padding:0px 4px 0px 4pxDetails how this designation would be used
            
             (
            To be conformant, the concept in this element SHALL be from the specified value set if
             any of the codes within the value set can apply to the concept being communicated.  If
             the value set does not cover the concept (based on human review), alternate codings (or,
             data type allowing, text) may be included instead.)
          
        

        
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           padding:0px 4px 0px 4pxProperty value for the concept
            
          
        

        
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            A date, date-time or partial date (e.g. just year or year + month).  If hours and minutes
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          goAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAI0lEQVR42u3QIQEAAAACIL/6/4MvTAQOkLYBAAB4kAAAANwMad9AqkRjgNAAAA
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            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            NdCABMPwMo2ctnoQAAAABJRU5ErkJggg==
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            L+O8cJABttJM11/x1qZAGqRBEVcNIqdWj1efDqQbb3HwwwwEfABmQUHSPM9dtDAAAAAElFTkSuQmCC
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            AiHLEFcSQi5B2C38Z3eAPJ8JjcrmigKnLJ7nd8mwDcnFh4h/68T29FVsfW4F4zeCmb0LZqYDO191hOtkZ5sIuY8lioJhKZ9lo2Dmb
            Njx9WDTowW7+YmsGv+9Ov3GijsgxwsNy7iiYOg4L54/nyawQC4lDubYANIRG7g1I9glHVILl5EMNCCXnEfouXSP4JksI+RY5OIfkW
            XGwf8cQSb6hAz2gV2+BXaxFangBSS/n0PCfxq5xAxCg3sFj2TpPB8Hvz2G3dWneOvqhLnPCIfDgd5uPebfNyAyrUR/t1bMmft7MdR
            1NiuXyw8UBDYpJ/AMkhsOPLa2wmKxIBqNIhwOw+Px4EG/Hvb7GoSCc2JucnJS7FEqlb2FizRwNMLHFmPvXnQJN/U6+Px+3LvdApVK
            iebmZlitVuj1ejFWqc7AZNCJEq1WGxMFAVPFtUCPZKhDXZUyGu6IAr+pklOclGNiYgI+nw9erxculws0N2uqjFOBwWDgSu61RCK50
            tLSwlBBfX39eE1NDa9QKFBXVydCY5qjNSqgvSWCw+RRqVTzZrOZcTqd2263G3a7HW1tbWhvbxdjmqM12kN7SwTl5eX7qqurq2pra5
            eampqSGo2GI2TUanUj4RSJ4zRHa7SH9v4C8Nrl+GFh7LoAAAAASUVORK5CYII= 
            CodeSystem.concept.concept : Defines children of a concept to produce a hierarchy of concepts.
             The nature of the relationships is variable (is-a/contains/categorizes) - see hierarchyMeaning.
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4pxsee 
            
          
          vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4pxChild Concepts (is-a/contains/categorizes)
            
          
        

        
          
            
            
               Documentation for this format
            
          
        
      
    
  
  
    
  
  
    
  
  
    
  
  
    
  
  
    
  
  
    
  
  
  
  
  
  
  
  
    
      
      
    
  
  
    
      
      
    
  
  The CodeSystem resource is used to declare the existence of and describe a code system
   or code system supplement and its key properties, and optionally define a part or all
   of its content.
  
  
    
    
    
  
  
    
    
    
  
  
    
    
    
  
  
    
    
    
  
  
  
  
  
    
      
    
  
  
  
    
      
      
      The CodeSystem resource is used to declare the existence of and describe a code system
       or code system supplement and its key properties, and optionally define a part or all
       of its content.
      
      
      
        
        
        
      
      
        
        

             grammar.">compositional</span> 
            <a name="CodeSystem.compositional"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#boolean">boolean</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">If code system defines a compositional grammar
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.versionNeeded : This flag is used to signify that the code system does

             not commit to concept permanence across versions. If true, a version must be specified
             when referencing this code system.">versionNeeded</span> 
            <a name="CodeSystem.versionNeeded"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#boolean">boolean</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">If definitions are not stable
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.content : The extent of the content of the code system (the concepts

             and codes it defines) are represented in this resource instance.">content</span> 
            <a name="CodeSystem.content"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
            <a href="conformance-rules.html#constraints" style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold;

             color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px;
             border: 1px maroon solid; font-weight: bold; color: #301212; background-color:
             #fdf4f4;" title="This element has or is affected by some invariants">C</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">1..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">not-present | example | fragment | complete | supplement
            <br/>  Binding:             <a href="valueset-codesystem-content-mode.html">Code System Content Mode</a>  (            <a href="terminologies.html#required" title="To be conformant, the concept in this element SHALL be from the specified value

             set.">Required</a> )
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Reference to another Resource"/>              <span title="CodeSystem.supplements : The canonical URL of the code system that this code system

             supplement is adding designations and properties to.">supplements</span> 
            <a name="CodeSystem.supplements"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
            <a href="conformance-rules.html#constraints" style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold;

             color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px;
             border: 1px maroon solid; font-weight: bold; color: #301212; background-color:
             #fdf4f4;" title="This element has or is affected by some invariants">C</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#canonical">canonical</a> (            <a href="codesystem.html">CodeSystem</a> )          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Canonical URL of Code System this adds designations and properties to
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.count : The total number of concepts defined by the code system. Where

             the code system has a compositional grammar, the basis of this count is defined
             by the system steward.">count</span> 
            <a name="CodeSystem.count"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#unsignedInt">unsignedInt</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Total concepts in the code system
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Element"/>              <span title="CodeSystem.filter : A filter that can be used in a value set compose statement

             when selecting concepts using a filter.">filter</span> 
            <a name="CodeSystem.filter"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="types.html#BackBoneElement">BackboneElement</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Filter that can be used in a value set
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMUlEQVR4Xu3LMQoAIBA
          Dwftr/v8GtdbqEAthAtMspJJUx9rYW8ftHwAA+NcRAAAAXplLq0BWj/rZigAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.filter.code : The code that identifies this filter when it is used as

             a filter in [ValueSet](valueset.html#).compose.include.filter.">code</span> 
            <a name="CodeSystem.filter.code"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">1..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Code that identifies the filter
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMUlEQVR4Xu3LMQoAIBA
          Dwftr/v8GtdbqEAthAtMspJJUx9rYW8ftHwAA+NcRAAAAXplLq0BWj/rZigAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.filter.description : A description of how or why the filter is used.">description</span>             <a name="CodeSystem.filter.description"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">How or why the filter is used
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMUlEQVR4Xu3LMQoAIBA
          Dwftr/v8GtdbqEAthAtMspJJUx9rYW8ftHwAA+NcRAAAAXplLq0BWj/rZigAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.filter.operator : A list of operators that can be used with the filter.">operator</span>             <a name="CodeSystem.filter.operator"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">1..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">= | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | child-of
             | descendent-leaf | exists
            <br/>  Binding:             <a href="valueset-filter-operator.html">Filter Operator</a>  (            <a href="terminologies.html#required" title="To be conformant, the concept in this element SHALL be from the specified value

             set.">Required</a> )
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.filter.value : A description of what the value for the filter should

             be.">value</span> 
            <a name="CodeSystem.filter.value"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">1..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">What to use for the value
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Element"/>              <span title="CodeSystem.property : A property defines an additional slot through which additional

             information can be provided about a concept.">property</span> 
            <a name="CodeSystem.property"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="types.html#BackBoneElement">BackboneElement</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Additional information supplied about each concept
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMUlEQVR4Xu3LMQoAIBA
          Dwftr/v8GtdbqEAthAtMspJJUx9rYW8ftHwAA+NcRAAAAXplLq0BWj/rZigAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.property.code : A code that is used to identify the property. The code

             is used internally (in CodeSystem.concept.property.code) and also externally, such
             as in property filters.">code</span> 
            <a name="CodeSystem.property.code"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">1..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Identifies the property on the concepts, and when referred to in operations
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMUlEQVR4Xu3LMQoAIBA
          Dwftr/v8GtdbqEAthAtMspJJUx9rYW8ftHwAA+NcRAAAAXplLq0BWj/rZigAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.property.uri : Reference to the formal meaning of the property. One

             possible source of meaning is the [Concept Properties](codesystem-concept-properties.html)
             code system.">uri</span> 
            <a name="CodeSystem.property.uri"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#uri">uri</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Formal identifier for the property
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMUlEQVR4Xu3LMQoAIBA
          Dwftr/v8GtdbqEAthAtMspJJUx9rYW8ftHwAA+NcRAAAAXplLq0BWj/rZigAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.property.description : A description of the property- why it is defined,

             and how its value might be used.">description</span> 
            <a name="CodeSystem.property.description"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Why the property is defined, and/or what it conveys
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALUlEQVR4Xu3IoREAIAw
          EwfT6/ddA0GBAxO3NrLlKUj9263wAAAAvrgEAADClAVWFQIBRHMicAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.property.type : The type of the property value. Properties of type &quot;code&quot

            ; contain a code defined by the code system (e.g. a reference to another defined
             concept).">type</span> 
            <a name="CodeSystem.property.type"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="elementdefinition-definitions.html#ElementDefinition.isSummary" style="padding-left: 3px; padding-right: 3px; color: black; null; padding-left: 3px; padding-right:

             3px; color: black; null" title="This element is included in summaries">Σ</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">1..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">code | Coding | string | integer | boolean | dateTime | decimal
            <br/>  Binding:             <a href="valueset-concept-property-type.html">Property Type</a>  (            <a href="terminologies.html#required" title="To be conformant, the concept in this element SHALL be from the specified value

             set.">Required</a> )
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAJUlEQVR4Xu3IIQEAAAg
          DsHd9/w4EQIOamFnaBgAA4MMKAACAKwNp30CqZFfFmwAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Element"/>              <span title="CodeSystem.concept : Concepts that are in the code system. The concept definitions

             are inherently hierarchical, but the definitions must be consulted to determine
             what the meanings of the hierarchical relationships are.">concept</span> 
            <a name="CodeSystem.concept"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="conformance-rules.html#constraints" style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold;

             color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px;
             border: 1px maroon solid; font-weight: bold; color: #301212; background-color:
             #fdf4f4;" title="This element has or is affected by some invariants">C</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="types.html#BackBoneElement">BackboneElement</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Concepts in the code system
            <br/>              <span style="font-style: italic" title="csd-6">+ Rule: If a concept identifies an alternate, there must be a reciprocal relationship</span>             <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALElEQVR4Xu3IsQ0AIAw
          Esez6+89AqKGGJj7JzVWS+mm3zgcAAMxwDQAAgFcaYAVAgNGLTjgAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.concept.code : A code - a text symbol - that uniquely identifies the

             concept within the code system.">code</span> 
            <a name="CodeSystem.concept.code"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="conformance-rules.html#constraints" style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold;

             color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px;
             border: 1px maroon solid; font-weight: bold; color: #301212; background-color:
             #fdf4f4;" title="This element has or is affected by some invariants">C</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">1..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Code that identifies concept
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALElEQVR4Xu3IsQ0AIAw
          Esez6+89AqKGGJj7JzVWS+mm3zgcAAMxwDQAAgFcaYAVAgNGLTjgAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.concept.display : A human readable string that is the recommended default

             way to present this concept to a user.">display</span> 
            <a name="CodeSystem.concept.display"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Text to display to the user
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALElEQVR4Xu3IsQ0AIAw
          Esez6+89AqKGGJj7JzVWS+mm3zgcAAMxwDQAAgFcaYAVAgNGLTjgAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.concept.definition : The formal definition of the concept. The code

             system resource does not make formal definitions required, because of the prevalence
             of legacy systems. However, they are highly recommended, as without them there
             is no formal meaning associated with the concept.">definition</span> 
            <a name="CodeSystem.concept.definition"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Formal definition
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALElEQVR4Xu3IsQ0AIAw
          Esez6+89AqKGGJj7JzVWS+mm3zgcAAMxwDQAAgFcaYAVAgNGLTjgAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Element"/>              <span title="CodeSystem.concept.designation : Additional representations for the concept - other

             languages, aliases, specialized purposes, used for particular purposes, etc.">designation</span> 
            <a name="CodeSystem.concept.designation"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="conformance-rules.html#constraints" style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold;

             color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px;
             border: 1px maroon solid; font-weight: bold; color: #301212; background-color:
             #fdf4f4;" title="This element has or is affected by some invariants">C</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="types.html#BackBoneElement">BackboneElement</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Additional representations for the concept
            <br/>              <span style="font-style: italic" title="csd-5">+ Rule: Must have a value for concept.designation.use if concept.designation.additionalUse

               is present</span> 
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMUlEQVR4Xu3LsQkAIBR
          Dwb9r9p9BrbUSUZsLXPMglaReGmtz23H6BwAA/lkCAADALR1gq0BWueJ34gAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.concept.designation.language : The language this designation is defined

             for.">language</span> 
            <a name="CodeSystem.concept.designation.language"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Human language of the designation
            <br/>  Binding:             <a href="valueset-all-languages.html">All Languages</a>  (            <a href="terminologies.html#required" title="To be conformant, the concept in this element SHALL be from the specified value

             set.">Required</a> )
            <table class="binding grid">              <tr>                 <td style="font-size: 11px">                  <b> Additional Bindings</b>                 </td>                 <td style="font-size: 11px">Purpose</td>               </tr>               <tr>                 <td style="font-size: 11px">                  <a href="valueset-languages.html">Common Languages</a>                 </td>                 <td style="font-size: 11px">                  <a href="valueset-additional-binding-purpose.html#additional-binding-purpose-starter" title="This value set is a good set of codes to start with when designing your system">Starter</a>                 </td>               </tr>             </table>             <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMUlEQVR4Xu3LsQkAIBR
          Dwb9r9p9BrbUSUZsLXPMglaReGmtz23H6BwAA/lkCAADALR1gq0BWueJ34gAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Data Type"/>              <span title="CodeSystem.concept.designation.use : A code that details how this designation would

             be used.">use</span> 
            <a name="CodeSystem.concept.designation.use"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="conformance-rules.html#constraints" style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold;

             color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px;
             border: 1px maroon solid; font-weight: bold; color: #301212; background-color:
             #fdf4f4;" title="This element has or is affected by some invariants">C</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#Coding">Coding</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Details how this designation would be used
            <br/>  Binding:             <a href="valueset-designation-use.html">Designation Use</a>  (            <a href="terminologies.html#extensible" title="To be conformant, the concept in this element SHALL be from the specified value

             set if any of the codes within the value set can apply to the concept being communicated.
              If the value set does not cover the concept (based on human review), alternate
             codings (or, data type allowing, text) may be included instead.">Extensible</a> )
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMUlEQVR4Xu3LsQkAIBR
          Dwb9r9p9BrbUSUZsLXPMglaReGmtz23H6BwAA/lkCAADALR1gq0BWueJ34gAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Data Type"/>              <span title="CodeSystem.concept.designation.additionalUse : Additional codes that detail how

             this designation would be used, if there is more than one use.">additionalUse</span> 
            <a name="CodeSystem.concept.designation.additionalUse"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="conformance-rules.html#constraints" style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold;

             color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px;
             border: 1px maroon solid; font-weight: bold; color: #301212; background-color:
             #fdf4f4;" title="This element has or is affected by some invariants">C</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#Coding">Coding</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Additional ways how this designation would be used
            <br/>  Binding:             <a href="valueset-designation-use.html">Designation Use</a>  (            <a href="terminologies.html#extensible" title="To be conformant, the concept in this element SHALL be from the specified value

             set if any of the codes within the value set can apply to the concept being communicated.
              If the value set does not cover the concept (based on human review), alternate
             codings (or, data type allowing, text) may be included instead.">Extensible</a> )
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALElEQVR4Xu3IsQ0AIAw
          Esez6+89AqKGGJj7JzVWS+mm3zgcAAMxwDQAAgFcaYAVAgNGLTjgAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.concept.designation.value : The text value for this designation.">value</span>             <a name="CodeSystem.concept.designation.value"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">1..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">The text value for this designation
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALElEQVR4Xu3IsQ0AIAw
          Esez6+89AqKGGJj7JzVWS+mm3zgcAAMxwDQAAgFcaYAVAgNGLTjgAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Element"/>              <span title="CodeSystem.concept.property : A property value for this concept.">property</span>             <a name="CodeSystem.concept.property"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="types.html#BackBoneElement">BackboneElement</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Property value for the concept
            <br/>              <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMUlEQVR4Xu3LsQkAIBR
          Dwb9r9p9BrbUSUZsLXPMglaReGmtz23H6BwAA/lkCAADALR1gq0BWueJ34gAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="CodeSystem.concept.property.code : A code that is a reference to CodeSystem.property.code

             or is a code from [http://hl7.org/fhir/concept-properties](codesystem.html#defined-props)
             in the case that there is no corresponding code defined in `CodeSystem.property.code`.">code</span> 
            <a name="CodeSystem.concept.property.code"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="conformance-rules.html#constraints" style="padding-left: 3px; padding-right: 3px; border: 1px maroon solid; font-weight: bold;

             color: #301212; background-color: #fdf4f4;; padding-left: 3px; padding-right: 3px;
             border: 1px maroon solid; font-weight: bold; color: #301212; background-color:
             #fdf4f4;" title="This element has or is affected by some invariants">C</a> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">1..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Reference to CodeSystem.property.code or a FHIR defined concept-property
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALElEQVR4Xu3IsQ0AIAw
          Esez6+89AqKGGJj7JzVWS+mm3zgcAAMxwDQAAgFcaYAVAgNGLTjgAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Choice of Types"/>              <span title="CodeSystem.concept.property.value[x] : The value of this property.">value[x]</span>             <a name="CodeSystem.concept.property.value_x_"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">1..1</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Value of the property for this concept
            <br/>            </td>         </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMElEQVR4Xu3NoREAIBA
          Dwe81/dcAaNA8gs3MmjOpJNVpbeyt0+t/AAD42REAAABumWsrQFb95aLsAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="A string which has at least one character and no leading or trailing whitespace

             and where there is no whitespace other than single spaces in the contents">valueCode</span> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#code">code</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
        </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMElEQVR4Xu3NoREAIBA
          Dwe81/dcAaNA8gs3MmjOpJNVpbeyt0+t/AAD42REAAABumWsrQFb95aLsAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Data Type"/>              <span title="A reference to a code defined by a terminology system.">valueCoding</span>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#Coding">Coding</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
        </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMElEQVR4Xu3NoREAIBA
          Dwe81/dcAaNA8gs3MmjOpJNVpbeyt0+t/AAD42REAAABumWsrQFb95aLsAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="A sequence of Unicode characters">valueString</span>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#string">string</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
        </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMElEQVR4Xu3NoREAIBA
          Dwe81/dcAaNA8gs3MmjOpJNVpbeyt0+t/AAD42REAAABumWsrQFb95aLsAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="A whole number">valueInteger</span>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#integer">integer</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
        </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMElEQVR4Xu3NoREAIBA
          Dwe81/dcAaNA8gs3MmjOpJNVpbeyt0+t/AAD42REAAABumWsrQFb95aLsAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="Value of &quot;true&quot; or &quot;false&quot;">valueBoolean</span>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#boolean">boolean</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
        </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAMElEQVR4Xu3NoREAIBA
          Dwe81/dcAaNA8gs3MmjOpJNVpbeyt0+t/AAD42REAAABumWsrQFb95aLsAAAAAElFTkSuQmCC)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>              <span title="A date, date-time or partial date (e.g. just year or year + month).  If hours and

             minutes are specified, a UTC offset SHALL be populated. The format is a union of
             the schema types gYear, gYearMonth, date and dateTime. Seconds must be provided
             due to schema type constraints but may be zero-filled and may be ignored.     
                        Dates SHALL be valid dates.">valueDateTime</span> 
          </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#dateTime">dateTime</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
        </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         #F7F7F7">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAALElEQVR4Xu3IsQ0AIAw
          Esez6+89AqKGGJj7JzVWS+mm3zgcAAMxwDQAAgFcaYAVAgNGLTjgAAAAASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: #F7F7F7; background-color: inherit" title="Primitive Data Type"/>              <span title="A rational number with implicit precision">valueDecimal</span>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">
            <a href="datatypes.html#decimal">decimal</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: #F7F7F7;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
        </tr>         <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color:

         white">
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image:
           url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCAYAAACg/LjIAAAAJUlEQVR4Xu3IIQEAAAg
          DsHd9/w4EQIOamFnaBgAA4MMKAACAKwNp30CqZFfFmwAAAABJRU5ErkJggg==)">
            <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: inherit"/>             <img alt="." class="hierarchy" src="data:(snipped in html view)" style="background-color: white; background-color: inherit" title="Reference to another Element"/>              <span title="CodeSystem.concept.concept : Defines children of a concept to produce a hierarchy

             of concepts. The nature of the relationships is variable (is-a/contains/categorizes)
             - see hierarchyMeaning.">concept</span> 
            <a name="CodeSystem.concept.concept"> </a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px"/> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">0..*</td> 
          <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">see 
            <a href="#CodeSystem.concept" title="CodeSystem.concept">concept</a>           </td>           <td class="hierarchy" style="vertical-align: top; text-align : var(--ig-left,left); background-color: white;

           border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px">Child Concepts (is-a/contains/categorizes)
            <br/>              <br/>            </td>         </tr>         <tr>           <td class="hierarchy" colspan="5">            <br/>              <a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format">              <img alt="doco" src="data:(snipped in html view)" style="background-color: inherit"/>  Documentation for this format            </a>           </td>         </tr>       </table>     </div>   </text>   <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-implements">    <valueCanonical value="http://hl7.org/fhir/StructureDefinition/MetadataResource"/>   </extension>   <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">    <valueCode value="normative"/>   </extension>   <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-normative-version">    <valueCode value="4.0.0"/>   </extension>   <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">    <valueCode value="vocab"/>   </extension>   <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">    <valueInteger value="5"/>   </extension>   <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-security-category">    <valueCode value="anonymous"/>   </extension>   <url value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>   <version value="6.0.0-ballot3"/>   <name value="CodeSystem"/>   <status value="active"/>   <experimental value="false"/>   <date value="2025-11-08T11:23:29+00:00"/>   <publisher value="HL7 International / Terminology Infrastructure"/>   <contact>     <telecom>       <system value="url"/>       <value value="http://www.hl7.org/Special/committees/fiwg"/>     </telecom>   </contact>   <contact>     <telecom>       <system value="url"/>       <value value="http://www.hl7.org/Special/committees/Vocab"/>     </telecom>   </contact>   <description value="The CodeSystem resource is used to declare the existence of and describe a code

   system or code system supplement and its key properties, and optionally define
   a part or all of its content."/> 
  <jurisdiction>     <coding>       <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>       <code value="001"/>       <display value="World"/>     </coding>   </jurisdiction>   <fhirVersion value="6.0.0-ballot3"/>   <mapping>     <identity value="w5"/>     <uri value="http://hl7.org/fhir/fivews"/>     <name value="FiveWs Pattern Mapping"/>   </mapping>   <mapping>     <identity value="rim"/>     <uri value="http://hl7.org/v3"/>     <name value="RIM Mapping"/>   </mapping>   <mapping>     <identity value="objimpl"/>     <uri value="http://hl7.org/fhir/object-implementation"/>     <name value="Object Implementation Information"/>   </mapping>   <kind value="resource"/>   <abstract value="false"/>   <type value="CodeSystem"/>   <baseDefinition value="http://hl7.org/fhir/StructureDefinition/DomainResource"/>   <derivation value="specialization"/>   <snapshot>     <element id="CodeSystem">      <path value="CodeSystem"/>       <short value="Declares the existence of and describes a code system or code system supplement"/>       <definition value="The CodeSystem resource is used to declare the existence of and describe a code

       system or code system supplement and its key properties, and optionally define
       a part or all of its content."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem"/>         <min value="0"/>         <max value="*"/>       </base>       <constraint>         <key value="cnl-0"/>         <severity value="warning"/> 
        <human value="Name should be usable as an identifier for the module by machine processing applications
         such as code generation
        
        
      
      
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
        
        
        If the resource is contained in another resource, it SHALL be referred to from elsewhere
         in the resource or SHALL refer to the containing resource
        contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonica
        l) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(refer
        ence = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(c
        anonical) = '#').exists()).not()).trace('unmatched', id).empty()
        not(exists(for $id in f:contained/*/f:id/@value return $contained[not(parent::*/descendant::f:refere
        nce/@value=concat('#', $contained/*/id/@value) or descendant::f:reference[@value='#'])]))
        
      
      
        
        
        If a resource is contained in another resource, it SHALL NOT have a meta.versionId or
         a meta.lastUpdated
        
        
        
      
      
        
        
        
        
        
        
      
      
        
          
        
        
          When a resource has no narrative, only systems that fully understand the data can display
           the resource to a human safely. Including a human readable representation in the resource
           makes for a much more robust eco-system and cheaper handling of resources by intermediary
           systems. Some ecosystems restrict distribution of resources to only those systems that
           do fully understand the resources, and as a consequence implementers may believe that
           the narrative is superfluous. However experience shows that such eco-systems often open
           up to new participants over time.
        
        
        
        
        
        
        
      
      
      
      
        
        
      
      
        
        
      
    
    
      
      
      The logical id of the resource, as used in the URL for the resource. Once assigned, this
       value never changes.
      The only time that a resource does not have an id is when it is being submitted to the
       server using a create operation.
      
      
      
        
        
        
      
    <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler magic
       (j)  -->
      
        
          
        
        
      
      
      
    
    
      
      

         such as code generation"/> 
        <expression value="name.exists() implies name.matches('^[A-Z]([A-Za-z0-9_]){1,254}$')"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <key value="csd-1"/>         <severity value="error"/>         <human value="Within a code system definition, all the codes SHALL be unique"/>         <expression value="concept.exists() implies concept.code.combine(%resource.concept.descendants().concept.code).i

        sDistinct()"/> 
        <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <key value="csd-2"/>         <severity value="warning"/>         <human value="If there is an explicit hierarchy, a hierarchyMeaning should be provided"/>         <expression value="concept.concept.exists() implies hierarchyMeaning.exists()"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <key value="csd-3"/>         <severity value="warning"/>         <human value="If there is an implicit hierarchy, a hierarchyMeaning should be provided"/>         <expression value="concept.where(property.code = 'parent' or property.code = 'child').exists() implies

         hierarchyMeaning.exists()"/> 
        <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <key value="csd-4"/>         <severity value="error"/>         <human value="If the code system content = supplement, it must nominate what it's a supplement

         for"/> 
        <expression value="CodeSystem.content = 'supplement' implies CodeSystem.supplements.exists()"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice">          <valueBoolean value="true"/>         </extension>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice-explanation">          <valueMarkdown value="There is scope for unsafe interpretation of codes if it's not known whether the

           CodeSystem is case sensitive or not"/> 
        </extension>         <key value="csd-7"/>         <severity value="warning"/>         <human value="caseSensitive SHOULD be provided"/>         <expression value="caseSensitive.exists()"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="w5"/>         <map value="conformance.behavior,conformance.terminology"/>       </mapping>       <mapping>         <identity value="rim"/>         <map value="N/A"/>       </mapping>     </element>     <element id="CodeSystem.id">      <path value="CodeSystem.id"/>       <short value="Logical id of this artifact"/>       <definition value="The logical id of the resource, as used in the URL for the resource. Once assigned,

       this value never changes."/> 
      <comment value="Within the context of the FHIR RESTful interactions, the resource has an id except

       for cases like the create and conditional update. Otherwise, the use of the resouce
       id depends on the given use case."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="Resource.id"/>         <min value="0"/>         <max value="1"/>       </base>       <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler

       magic (j)  -->
      <type>         <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">          <valueUrl value="string"/>         </extension>         <code value="http://hl7.org/fhirpath/System.String"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.meta">      <path value="CodeSystem.meta"/>       <short value="Metadata about the resource"/> 
      <definition value="The metadata about the resource. This is content that is maintained by the infrastructure.
       Changes to the content might not always be associated with version changes to the resource.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      A reference to a set of rules that were followed when the resource was constructed, and
       which must be understood when processing the content. Often, this is a reference to an
       implementation guide that defines the special rules along with other profiles etc.
      Asserting this rule set restricts the content to be only understood by a limited set of
       trading partners. This inherently limits the usefulness of the data in the long term.
       However, the existing health eco-system is highly fractured, and not yet ready to define,
       collect, and exchange data in a generally computable sense. Wherever possible, implementers
       and/or specification writers should avoid using this element. Often, when used, the URL
       is a reference to an implementation guide that defines these special rules as part of
       it's narrative along with other profiles, value sets, etc.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      

       Changes to the content might not always be associated with version changes to the
       resource."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="Resource.meta"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="Meta"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.implicitRules">      <path value="CodeSystem.implicitRules"/>       <short value="A set of rules under which this content was created"/>       <definition value="A reference to a set of rules that were followed when the resource was constructed,

       and which must be understood when processing the content. Often, this is a reference
       to an implementation guide that defines the special rules along with other profiles
       etc. For DomainResources, if more than one implicitRules policy applies, additional
       policies may be conveyed using the [additionalImplicitRules](https://build.fhir.org/ig/HL7/fh
      ir-extensions/StructureDefinition-additionalImplicitRules.html) extension."/> 
      <comment value="Asserting this rule set restricts the content to be only understood by a limited

       set of trading partners. This inherently limits the usefulness of the data in the
       long term. However, the existing health eco-system is highly fractured, and not
       yet ready to define, collect, and exchange data in a generally computable sense.
       Wherever possible, implementers and/or specification writers should avoid using
       this element. Often, when used, the URL is a reference to an implementation guide
       that defines these special rules as part of its narrative along with other profiles,
       value sets, etc."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="Resource.implicitRules"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="uri"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="true"/> 
      <isModifierReason value="This element is labeled as a modifier because the implicit rules may provide additional
       knowledge about the resource that modifies it's meaning or interpretation
      
    
    
      
      
      
      Language is provided to support indexing and accessibility (typically, services such as
       text to speech use the language tag). The html language tag in the narrative applies 
       to the narrative. The language tag on the resource may be used to specify the language
       of other presentations generated from the data in the resource. Not all the content has
       to be in the base language. The Resource.language should not be assumed to apply to the
       narrative automatically. If a language is specified, it should it also be specified on
       the div element in the html (see rules in HTML5 for information about the relationship
       between xml:lang and the html lang attribute).
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
          
        
        
          
        
        
          
        
        
        
        
      
    
    
      
      
      A human-readable narrative that contains a summary of the resource and can be used to
       represent the content of the resource to a human. The narrative need not encode all the
       structured data, but is required to contain sufficient detail to make it &quot;clinically
       safe&quot; for a human to just read the narrative. Resource definitions may define what
       content should be represented in the narrative to ensure clinical safety.
      Contained resources do not have narrative. Resources that are not contained SHOULD have
       a narrative. In some cases, a resource may only have text with little or no additional
       discrete data (as long as all minOccurs=1 elements are satisfied).  This may be necessary
       for data from legacy systems where information is captured as a &quot;text blob&quot;
       or where text is additionally entered raw or narrated and encoded information is added
       later.
      
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
    
    
      
      
      These resources do not have an independent existence apart from the resource that contains
       them - they cannot be identified independently, and nor can they have their own independent
       transaction scope.
      This should never be done when the content can be identified properly, as once identification
       is lost, it is extremely difficult (and context dependent) to restore it again. Contained
       resources may have profiles and tags In their meta elements, but SHALL NOT have security
       labels.
      
      
      
      
      
      
        
        
        
      
      
        
      
      
      
      
        
        
      
    
    
      
      

       knowledge about the resource that modifies its meaning or interpretation"/> 
      <isSummary value="true"/>     </element>     <element id="CodeSystem.language">      <path value="CodeSystem.language"/>       <short value="Language of the resource content"/>       <definition value="The base language in which the resource is written."/>       <comment value="Language is provided to support indexing and accessibility (typically, services

       such as text to speech use the language tag). The html language tag in the narrative
       applies  to the narrative. The language tag on the resource may be used to specify
       the language of other presentations generated from the data in the resource. Not
       all the content has to be in the base language. The Resource.language should not
       be assumed to apply to the narrative automatically. If a language is specified,
       it should it also be specified on the div element in the html (see rules in HTML5
       for information about the relationship between xml:lang and the html lang attribute)."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="Resource.language"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="code"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="Language"/>         </extension>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">          <valueBoolean value="true"/>         </extension>         <strength value="required"/>         <description value="IETF language tag for a human language"/>         <valueSet value="http://hl7.org/fhir/ValueSet/all-languages|6.0.0-ballot3"/>         <additional>           <purpose value="starter"/>           <valueSet value="http://hl7.org/fhir/ValueSet/languages"/>         </additional>       </binding>     </element>     <element id="CodeSystem.text">      <path value="CodeSystem.text"/>       <short value="Text summary of the resource, for human interpretation"/>       <definition value="A human-readable narrative that contains a summary of the resource and can be used

       to represent the content of the resource to a human. The narrative need not encode
       all the structured data, but is required to contain sufficient detail to make it
       &quot;clinically safe&quot; for a human to just read the narrative. Resource definitions
       may define what content should be represented in the narrative to ensure clinical
       safety."/> 
      <comment value="Contained resources do not have a narrative. Resources that are not contained SHOULD

       have a narrative. In some cases, a resource may only have text with little or no
       additional discrete data (as long as all minOccurs=1 elements are satisfied). 
       This may be necessary for data from legacy systems where information is captured
       as a &quot;text blob&quot; or where text is additionally entered raw or narrated
       and encoded information is added later."/> 
      <alias value="narrative"/>       <alias value="html"/>       <alias value="xhtml"/>       <alias value="display"/>       <min value="0"/>       <max value="1"/>       <base>         <path value="DomainResource.text"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="Narrative"/>       </type>       <condition value="dom-6"/>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="Act.text?"/>       </mapping>     </element>     <element id="CodeSystem.contained">      <path value="CodeSystem.contained"/>       <short value="Contained, inline Resources"/>       <definition value="These resources do not have an independent existence apart from the resource that

       contains them - they cannot be identified independently, nor can they have their
       own independent transaction scope. This is allowed to be a Parameters resource
       if and only if it is referenced by a resource that provides context/meaning."/> 
      <comment value="This should never be done when the content can be identified properly, as once

       identification is lost, it is extremely difficult (and context dependent) to restore
       it again. Contained resources may have profiles and tags in their meta elements,
       but SHALL NOT have security labels. Contained resources may be a resource type
       defined in the FHIR specification, or an [additional resource](resource.html#additional)."/> 
      <alias value="inline resources"/>       <alias value="anonymous resources"/>       <alias value="contained resources"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="DomainResource.contained"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Resource"/>       </type>       <condition value="dom-2"/>       <condition value="dom-4"/>       <condition value="dom-3"/>       <condition value="dom-5"/>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="N/A"/>       </mapping>     </element>     <element id="CodeSystem.extension">      <path value="CodeSystem.extension"/>       <short value="Additional content defined by implementations"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the resource. To make the use of extensions safe and manageable, there is a strict
       set of governance  applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part of the
       definition of the extension.
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
    
    
      
      

       of the resource. To make the use of extensions safe and managable, there is a strict
       set of governance applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part
       of the definition of the extension."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="DomainResource.extension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="N/A"/>       </mapping>     </element>     <element id="CodeSystem.modifierExtension">      <path value="CodeSystem.modifierExtension"/>       <short value="Extensions that cannot be ignored"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the resource and that modifies the understanding of the element that contains it and/or
       the understanding of the containing element's descendants. Usually modifier elements provide
       negation or qualification. To make the use of extensions safe and manageable, there is
       a strict set of governance applied to the definition and use of extensions. Though any
       implementer is allowed to define an extension, there is a set of requirements that SHALL
       be met as part of the definition of the extension. Applications processing a resource
       are required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource
       (including cannot change the meaning of modifierExtension itself).
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly
       distinguished from the vast majority of extensions which can be safely ignored.  This
       promotes interoperability by eliminating the need for implementers to prohibit the presence
       of extensions. For further information, see the [definition of modifier extensions](extensibility.ht
      ml#modifierExtension).
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      Modifier extensions are expected to modify the meaning or interpretation of the resource
       that contains them
      
      
        
        
      
    
    
      
      
      An absolute URI that is used to identify this code system when it is referenced in a specification,
       model, design or an instance; also called its canonical identifier. This SHOULD be globally
       unique and SHOULD be a literal address at which at which an authoritative instance of
       this code system is (or will be) published. This URL can be the target of a canonical
       reference. It SHALL remain the same when the code system is stored on different servers.
       This is used in [Coding](datatypes.html#Coding).system.
      Can be a urn:uuid: or a urn:oid: but real http: addresses are preferred.  Multiple instances
       may share the same URL if they have a distinct version.

The determination of when to create a new version of a resource (same url, new version)
       vs. defining a new artifact is up to the author.  Considerations for making this decision
       are found in [Technical and Business Versions](resource.html#versions). 

In some cases, the resource can no longer be found at the stated url, but the url itself
       cannot change. Implementations can use the [meta.source](resource.html#meta) element to
       indicate where the current master source of the resource can be found.
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
      
        
        
      
    
    
      
      
      A formal identifier that is used to identify this code system when it is represented in
       other formats, or referenced in a specification, model, design or an instance.
      Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier)
       data type, and can then identify this code system outside of FHIR, where it is not possible
       to use the logical URI.  Note that HL7 defines at least three identifiers for many of
       its code systems - the FHIR canonical URL, the OID and the V2 Table 0396 mnemonic code.

       of the resource and that modifies the understanding of the element that contains
       it and/or the understanding of the containing element's descendants. Usually modifier
       elements provide negation or qualification. To make the use of extensions safe
       and managable, there is a strict set of governance applied to the definition and
       use of extensions. Though any implementer is allowed to define an extension, there
       is a set of requirements that SHALL be met as part of the definition of the extension.
       Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or
       DomainResource (including cannot change the meaning of modifierExtension itself)."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be

       clearly distinguished from the vast majority of extensions which can be safely
       ignored.  This promotes interoperability by eliminating the need for implementers
       to prohibit the presence of extensions. For further information, see the [definition
       of modifier extensions](extensibility.html#modifierExtension)."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="DomainResource.modifierExtension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="true"/>       <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the

       resource that contains them"/> 
      <isSummary value="true"/>       <mapping>         <identity value="rim"/>         <map value="N/A"/>       </mapping>     </element>     <element id="CodeSystem.url">      <path value="CodeSystem.url"/>       <short value="Canonical identifier for this code system, represented as a URI (globally unique)

       (Coding.system)"/> 
      <definition value="An absolute URI that is used to identify this code system when it is referenced

       in a specification, model, design or an instance; also called its canonical identifier.
       This SHOULD be globally unique and SHOULD be a literal address at which an authoritative
       instance of this code system is (or will be) published. This URL can be the target
       of a canonical reference. It SHALL remain the same when the code system is stored
       on different servers. This is used in [Coding](datatypes.html#Coding).system."/> 
      <comment value="Can be a urn:uuid: or a urn:oid: but real http: addresses are preferred.  Multiple

       instances may share the same URL if they have a distinct version.
The determination of when to create a new version of a resource (same url, new
       version) vs. defining a new artifact is up to the author.  Considerations for making
       this decision are found in [Technical and Business Versions](resource.html#versions).
       
In some cases, the resource can no longer be found at the stated url, but the url
       itself cannot change. Implementations can use the [meta.source](resource.html#meta)
       element to indicate where the current master source of the resource can be found."/> 
      <requirements value="Allows the code system to be referenced by a single globally unique identifier."/>       <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.url"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="uri"/>       </type>       <constraint>         <key value="cnl-1"/>         <severity value="warning"/>         <human value="URL should not contain | or # - these characters make processing canonical references

         problematic"/> 
        <expression value="exists() implies matches('^[^|# ]+$')"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.identifier"/>       </mapping>     </element>     <element id="CodeSystem.identifier">      <path value="CodeSystem.identifier"/>       <short value="Additional identifier for the code system (business identifier)"/>       <definition value="A formal identifier that is used to identify this code system when it is represented

       in other formats, or referenced in a specification, model, design or an instance."/> 

      <requirements value="Allows externally provided and/or usable business identifiers to be easily associated
       with the module.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      The identifier that is used to identify this version of the code system when it is referenced
       in a specification, model, design or instance. This is an arbitrary value managed by the
       code system author and is not expected to be globally unique. For example, it might be
       a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation
       that versions can be placed in a lexicographical sequence. This is used in [Coding](datatypes.html#C
      oding).version.
      There may be different code system instances that have the same identifier but different
       versions.  The version can be appended to the url in a reference to allow a reference
       to a particular business version of the code system with the format [url]|[version].
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
      
        
        
      
    
    
      
      
      A natural language name identifying the code system. This name should be usable as an
       identifier for the module by machine processing applications such as code generation.

       with the module."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.identifier"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Identifier"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.identifier"/>       </mapping>       <mapping>         <identity value="objimpl"/>         <map value="no-gen-base"/>       </mapping>     </element>     <element id="CodeSystem.version">      <path value="CodeSystem.version"/>       <short value="Business version of the code system (Coding.version)"/>       <definition value="The identifier that is used to identify this version of the code system when it

       is referenced in a specification, model, design or instance. This is an arbitrary
       value managed by the code system author and is not expected to be globally unique.
       For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not
       available. There is also no expectation that versions can be placed in a lexicographical
       sequence. This is used in [Coding](datatypes.html#Coding).version."/> 
      <comment value="There may be different code system instances that have the same identifier but

       different versions.  The version can be appended to the url in a reference to allow
       a reference to a particular business version of the code system with the format
       [url]|[version]. The version SHOULD NOT contain a '#' - see [Business Version](resource.html#
      bv-format)."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.version"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="string"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.version"/>       </mapping>     </element>     <element id="CodeSystem.versionAlgorithm[x]">      <path value="CodeSystem.versionAlgorithm[x]"/>       <short value="How to compare versions"/>       <definition value="Indicates the mechanism used to compare versions to determine which CodeSystem

       is more current."/> 
      <comment value="If set as a string, this is a FHIRPath expression that has two additional context

       variables passed in - %version1 and %version2 and will return a negative number
       if version1 is newer, a positive number if version2 and a 0 if the version ordering
       can't be successfully be determined."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.versionAlgorithm[x]"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="string"/>       </type>       <type>         <code value="Coding"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <binding>         <strength value="extensible"/>         <valueSet value="http://hl7.org/fhir/ValueSet/version-algorithm"/>       </binding>     </element>     <element id="CodeSystem.name">      <path value="CodeSystem.name"/>       <short value="Name for this code system (computer friendly)"/>       <definition value="A natural language name identifying the code system. This name should be usable

       as an identifier for the module by machine processing applications such as code
       generation."/> 

      <comment value="The name is not expected to be globally unique. The name should be a simple alphanumeric
       type name to ensure that it is machine-processing friendly.
      
      
      
      
        
        
        
      
      
        
      
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      

       type name to ensure that it is machine-processing friendly."/> 
      <requirements value="Support human navigation and code generation."/>       <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.name"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="string"/>       </type>       <condition value="cnl-0"/>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.title">      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.title"/>       <short value="Name for this code system (human friendly)"/>       <definition value="A short, descriptive, user-friendly title for the code system."/> 
      <comment value="This name does not need to be machine-processing friendly and may contain punctuation,
       white-space, etc.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
    
    
      
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      This is labeled as &quot;Is Modifier&quot; because applications should not use a retired
       {{title}} without due consideration
      
      
        
          
        
        
          
        
        
        
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      A Boolean value to indicate that this code system is authored for testing purposes (or
       education/evaluation/marketing) and is not intended to be used for genuine usage.
      
      Enables experimental content to be developed following the same lifecycle that would be
       used for a production-level code system.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
      
        
        
      
    
    
      
      
      The date  (and optionally time) when the code system was published. The date must change
       when the business version changes and it must change if the status code changes. In addition,
       it should change when the substantive content of the code system changes.
      Note that this is not the same as the resource last-modified-date, since the resource
       may be a secondary representation of the code system. Additional specific dates may be
       added as extensions or be found by consulting Provenances associated with past versions
       of the resource.
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
      
        
        
      
    
    
      
      
      
      Usually an organization but may be an individual. The publisher (or steward) of the code
       system is the organization or individual primarily responsible for the maintenance and
       upkeep of the code system. This is not necessarily the same individual or organization
       that developed and initially authored the content. The publisher is the primary point
       of contact for questions or issues with the code system. This item SHOULD be populated
       unless the information is available from context.
      Helps establish the &quot;authority/credibility&quot; of the code system.  May also allow
       for contact.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
      
        
        
      
    
    
      
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
    
    
      
      
      
      This description can be used to capture details such as why the code system was built,
       comments about misuse, instructions for clinical use and interpretation, literature references,
       examples from the paper world, etc. It is not a rendering of the code system as conveyed
       in the 'text' field of the resource itself. This item SHOULD be populated unless the information
       is available from context (e.g. the language of the code system is presumed to be the
       predominant language in the place the code system was created).
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
      
        
        
      
    
    
      
        
      
      
      
      The content was developed with a focus and intent of supporting the contexts that are
       listed. These contexts may be general categories (gender, age, ...) or may be references
       to specific programs (insurance plans, studies, ...) and may be used to assist with indexing
       and searching for appropriate code system instances.
      When multiple useContexts are specified, there is no expectation that all or any of the
       contexts apply.
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
    
    
      
      
      
      It may be possible for the code system to be used in jurisdictions other than those for
       which it was originally designed or intended.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
          
        
        
          
        
        
        
        
      
      
        
        
      
    
    
      
      
      
      This element does not describe the usage of the code system. Instead, it provides traceability
       of ''why'' the resource is either needed or ''why'' it is defined as it is.  This may
       be used to point to source materials or specifications that drove the structure of this
       code system.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      A copyright statement relating to the code system and/or its contents. Copyright statements
       are generally legal restrictions on the use and publishing of the code system.
      ... Sometimes, the copyright differs between the code system and the codes that are included.
       The copyright statement should clearly differentiate between these when required.
      Consumers must be able to determine any legal restrictions on the use of the code system
       and/or its content.
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
      
        
        
      
    
    
      
      
      If code comparison is case sensitive when codes within this system are compared to each
       other.
      If this value is missing, then it is not specified whether a code system is case sensitive
       or not. When the rule is not known, Postel's law should be followed: produce codes with
       the correct case, and accept codes in any case. This element is primarily provided to
       support validation software.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      The definition of the value set SHALL include all codes from this code system and only
       codes from this code system, and it SHALL be immutable.
      
      
      
        
        
        
      
      
        
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      Note that other representations might have a different hierarchy or none at all, and represent
       the information using properties.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
          
        
        
        
        
      
    
    
      
      
      
      Note that the code system resource does not define what the compositional grammar is,
       only whether or not there is one.
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      

       white-space, etc."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.title"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="string"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.status">      <path value="CodeSystem.status"/>       <short value="draft | active | retired | unknown"/>       <definition value="The status of this code system. Enables tracking the life-cycle of the content."/>       <comment value="Allows filtering of code systems that are appropriate for use versus not.
See guidance around (not) making local changes to elements [here](canonicalresource.html#loca
      lization)."/> 
      <min value="1"/>       <max value="1"/>       <base>         <path value="CodeSystem.status"/>         <min value="1"/>         <max value="1"/>       </base>       <type>         <code value="code"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="true"/>       <isModifierReason value="This is labeled as &quot;Is Modifier&quot; because applications should not use

       a retired CodeSystem without due consideration"/> 
      <isSummary value="true"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="PublicationStatus"/>         </extension>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">          <valueBoolean value="true"/>         </extension>         <strength value="required"/>         <description value="The lifecycle status of an artifact."/>         <valueSet value="http://hl7.org/fhir/ValueSet/publication-status|6.0.0-ballot3"/>       </binding>       <mapping>         <identity value="w5"/>         <map value="FiveWs.status"/>       </mapping>     </element>     <element id="CodeSystem.experimental">      <path value="CodeSystem.experimental"/>       <short value="For testing only - never for real usage"/>       <definition value="A Boolean value to indicate that this code system is authored for testing purposes

       (or education/evaluation/marketing) and no version of this resource will ever be
       intended for genuine usage."/> 
      <comment value="Allows filtering of code systems that are appropriate for use versus not.. Experimental

       resources might include example instances in implementation guides, instances created
       solely for testing purposes, etc. If experimental is 'true' for any version of
       a resource, it should be true for all versions of the resource.  (If experimental
       changes, then it is being misused or a resource that was never intended for real-world
       use has unexpectedly changed its purpose.).
Experimental resources are not expected to be stable and may well have breaking
       changes without a corresponding change to the 'version' element."/> 
      <requirements value="Enables experimental content to be developed following the same lifecycle that

       would be used for a production-level code system."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.experimental"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="boolean"/>       </type>       <meaningWhenMissing value="If absent, this resource is treated as though it is not experimental."/>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.class"/>       </mapping>     </element>     <element id="CodeSystem.date">      <path value="CodeSystem.date"/>       <short value="Date last changed"/>       <definition value="The date  (and optionally time) when the code system was last significantly changed.

       The date must change when the business version changes and it must change if the
       status code changes. In addition, it should change when the substantive content
       of the code system changes."/> 
      <comment value="The date is often not tracked until the resource is published, but may be present

       on draft content. Note that this is not the same as the resource last-modified-date,
       since the resource may be a secondary representation of the code system. Additional
       specific dates may be added as extensions or be found by consulting Provenances
       associated with past versions of the resource.
See guidance around (not) making local changes to elements [here](canonicalresource.html#loca
      lization)."/> 
      <alias value="Revision Date"/>       <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.date"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="dateTime"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.recorded"/>       </mapping>     </element>     <element id="CodeSystem.publisher">      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.publisher"/>       <short value="Name of the publisher/steward (organization or individual)"/>       <definition value="The name of the organization or individual responsible for the release and ongoing

       maintenance of the code system."/> 
      <comment value="Usually an organization but may be an individual. The publisher (or steward) of

       the code system is the organization or individual primarily responsible for the
       maintenance and upkeep of the code system. This is not necessarily the same individual
       or organization that developed and initially authored the content. The publisher
       is the primary point of contact for questions or issues with the code system. This
       item SHOULD be populated unless the information is available from context."/> 
      <requirements value="Helps establish the &quot;authority/credibility&quot; of the code system.  May

       also allow for contact."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.publisher"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="string"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.witness"/>       </mapping>     </element>     <element id="CodeSystem.contact">      <path value="CodeSystem.contact"/>       <short value="Contact details for the publisher"/>       <definition value="Contact details to assist a user in finding and communicating with the publisher."/>       <comment value="May be a web site, an email address, a telephone number, etc.
See guidance around (not) making local changes to elements [here](canonicalresource.html#loca
      lization)."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.contact"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="ContactDetail"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.description">      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.description"/>       <short value="Natural language description of the code system"/>       <definition value="A free text natural language description of the code system from a consumer's perspective."/>       <comment value="This description can be used to capture details such as comments about misuse,

       instructions for clinical use and interpretation, literature references, examples
       from the paper world, etc. It is not a rendering of the code system as conveyed
       in the 'text' field of the resource itself. This item SHOULD be populated unless
       the information is available from context (e.g. the language of the code system
       is presumed to be the predominant language in the place the code system was created)."/> 
      <alias value="Scope"/>       <alias value="Purpose"/>       <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.description"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="markdown"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="N/A"/>       </mapping>     </element>     <element id="CodeSystem.useContext">      <path value="CodeSystem.useContext"/>       <short value="The context that the content is intended to support"/>       <definition value="The content was developed with a focus and intent of supporting the contexts that

       are listed. These contexts may be general categories (gender, age, ...) or may
       be references to specific programs (insurance plans, studies, ...) and may be used
       to assist with indexing and searching for appropriate code system instances."/> 
      <comment value="When multiple useContexts are specified, there is no expectation that all or any

       of the contexts apply."/> 
      <requirements value="Assist in searching for appropriate content."/>       <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.useContext"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="UsageContext"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.jurisdiction">      <path value="CodeSystem.jurisdiction"/>       <short value="Jurisdiction of the authority that maintains the code system (if applicable)"/>       <definition value="A legal or geographic region in which the authority that maintains the resource

       is operating.  In general, the jurisdiction is also found in the useContext.  The
       useContext may reference additional jurisdictions because the defining jurisdiction
       does not necessarily limit the jurisdictions of use."/> 
      <comment value="It may be possible for the code system to be used in jurisdictions other than those

       for which it was originally designed or intended.
DEPRECATION NOTE: For consistency, implementations are encouraged to migrate to
       using the new 'jurisdiction' code in the useContext element.  (I.e. useContext.code
       indicating http://terminology.hl7.org/CodeSystem/usage-context-type#jurisdiction
       and useContext.valueCodeableConcept indicating the jurisdiction.)"/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.jurisdiction"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="CodeableConcept"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="Jurisdiction"/>         </extension>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">          <valueBoolean value="true"/>         </extension>         <strength value="extensible"/>         <description value="Countries and regions within which this artifact is targeted for use."/>         <valueSet value="http://terminology.hl7.org/ValueSet/jurisdiction"/>       </binding>     </element>     <element id="CodeSystem.purpose">      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.purpose"/>       <short value="Why this code system is defined"/>       <definition value="Explanation of why this code system is needed and why it has been designed as it

       has."/> 
      <comment value="This element does not describe the usage of the code system. Instead, it provides

       traceability of ''why'' the resource is either needed or ''why'' it is defined
       as it is.  This may be used to point to source materials or specifications that
       drove the structure of this code system."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.purpose"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="markdown"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.why[x]"/>       </mapping>       <mapping>         <identity value="objimpl"/>         <map value="no-gen-base"/>       </mapping>     </element>     <element id="CodeSystem.copyright">      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.copyright"/>       <short value="Notice about intellectual property ownership, can include restrictions on use"/>       <definition value="A copyright statement relating to the code system and/or its contents. Copyright

       statements are notices of intellectual property ownership and can include restrictions
       on the use and publishing of the code system."/> 
      <comment value="... Sometimes, the copyright differs between the code system and the codes that

       are included. The copyright statement should clearly differentiate between these
       when required."/> 
      <requirements value="Consumers must be able to determine any legal restrictions on the use of the code

       system and/or its content."/> 
      <alias value="License"/>       <alias value="Restrictions"/>       <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.copyright"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="markdown"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="objimpl"/>         <map value="no-gen-base"/>       </mapping>     </element>     <element id="CodeSystem.copyrightLabel">      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.copyrightLabel"/>       <short value="Copyright holder and year(s)"/>       <definition value="A short string (&lt;50 characters), suitable for inclusion in a page footer that

       identifies the copyright holder, effective period, and optionally whether rights
       are restricted. (e.g. 'All rights reserved', 'Some rights reserved')."/> 
      <comment value="The copyright symbol and the '(c)' textual representation SHOULD NOT be included

       in this string. It will be added by software when rendering the notation. Full
       details about licensing, restrictions, warrantees, etc. goes in the more general
       'copyright' element."/> 
      <requirements value="Defines the content expected to be rendered in all representations of the artifact."/>       <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.copyrightLabel"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="string"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.approvalDate">      <path value="CodeSystem.approvalDate"/>       <short value="When the CodeSystem was approved by publisher"/>       <definition value="The date on which the resource content was approved by the publisher. Approval

       happens once when the content is officially approved for usage."/> 
      <comment value="The 'date' element may be more recent than the approval date because of minor changes

       or editorial corrections.
See guidance around (not) making local changes to elements [here](canonicalresource.html#loca
      lization)."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.approvalDate"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="date"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="objimpl"/>         <map value="no-gen-base"/>       </mapping>     </element>     <element id="CodeSystem.lastReviewDate">      <path value="CodeSystem.lastReviewDate"/>       <short value="When the CodeSystem was last reviewed by the publisher"/>       <definition value="The date on which the resource content was last reviewed. Review happens periodically

       after approval but does not change the original approval date."/> 
      <comment value="If specified, this date follows the original approval date.
See guidance around (not) making local changes to elements [here](canonicalresource.html#loca
      lization)."/> 
      <requirements value="Gives a sense of how &quot;current&quot; the content is.  Resources that have not

       been reviewed in a long time may have a risk of being less appropriate/relevant."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.lastReviewDate"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="date"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="objimpl"/>         <map value="no-gen-base"/>       </mapping>     </element>     <element id="CodeSystem.effectivePeriod">      <path value="CodeSystem.effectivePeriod"/>       <short value="When the CodeSystem is expected to be used"/>       <definition value="The period during which the CodeSystem content was or is planned to be in active

       use."/> 
      <comment value="The effective period for a CodeSystem  determines when the content is applicable

       for usage and is independent of publication and review dates. For example, a system
       intended to be used for the year 2016 might be published in 2015.
See guidance around (not) making local changes to elements [here](canonicalresource.html#loca
      lization)."/> 
      <requirements value="Allows establishing a transition before a resource comes into effect and also allows

       for a sunsetting  process when new versions of the CodeSystem are or are expected
       to be used instead."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.effectivePeriod"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="Period"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="objimpl"/>         <map value="no-gen-base"/>       </mapping>     </element>     <element id="CodeSystem.topic">      <path value="CodeSystem.topic"/>       <short value="E.g. Education, Treatment, Assessment, etc"/>       <definition value="Descriptions related to the content of the CodeSystem. Topics provide a high-level

       categorization as well as keywords for the CodeSystem that can be useful for filtering
       and searching."/> 
      <comment value="DEPRECATION NOTE: For consistency, implementations are encouraged to migrate to

       using the new 'topic' code in the useContext element.  (I.e. useContext.code indicating
       http://terminology.hl7.org/CodeSystem/usage-context-type#topic and useContext.valueCodeableCo
      ncept indicating the topic)"/> 
      <requirements value="Repositories must be able to determine how to categorize the CodeSystem so that

       it can be found by topical and keyword searches."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.topic"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="CodeableConcept"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="DefinitionTopic"/>         </extension>         <strength value="example"/>         <valueSet value="http://hl7.org/fhir/ValueSet/definition-topic"/>       </binding>     </element>     <element id="CodeSystem.author">      <path value="CodeSystem.author"/>       <short value="Who authored the CodeSystem"/>       <definition value="An individiual or organization primarily involved in the creation and maintenance

       of the CodeSystem."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.author"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="ContactDetail"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.editor">      <path value="CodeSystem.editor"/>       <short value="Who edited the CodeSystem"/>       <definition value="An individual or organization primarily responsible for internal coherence of the

       CodeSystem."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.editor"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="ContactDetail"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.reviewer">      <path value="CodeSystem.reviewer"/>       <short value="Who reviewed the CodeSystem"/>       <definition value="An individual or organization asserted by the publisher to be primarily responsible

       for review of some aspect of the CodeSystem."/> 
      <comment value="See guidance around (not) making local changes to elements [here](canonicalresource.html#loca

      lization)."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.reviewer"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="ContactDetail"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.endorser">      <path value="CodeSystem.endorser"/>       <short value="Who endorsed the CodeSystem"/>       <definition value="An individual or organization asserted by the publisher to be responsible for officially

       endorsing the CodeSystem for use in some setting."/> 
      <comment value="See guidance around (not) making local changes to elements [here](canonicalresource.html#loca

      lization)."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.endorser"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="ContactDetail"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.relatedArtifact">      <path value="CodeSystem.relatedArtifact"/>       <short value="Additional documentation, citations, etc"/>       <definition value="Related artifacts such as additional documentation, justification, dependencies,

       bibliographic references, and predecessor and successor artifacts. If the type
       is `successor` or `predecessor`, the related resource must be a CodeSystem."/> 
      <comment value="Each related artifact is either an attachment, or a reference to another resource,

       but not both."/> 
      <requirements value="A CodeSystem must be able to provide enough information for consumers of the content

       (and/or interventions or results produced by the content) to be able to determine
       and understand the justification for and evidence in support of the content."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.relatedArtifact"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="RelatedArtifact"/>       </type>       <constraint>         <key value="csd-8"/>         <severity value="error"/>         <human value="Related artifact can't be depends-on or composed-of"/>         <expression value="(type in ('depends-on' | 'composed-of')).not()"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.caseSensitive">      <path value="CodeSystem.caseSensitive"/>       <short value="If code comparison is case sensitive"/>       <definition value="If code comparison is case sensitive when codes within this system are compared

       to each other."/> 
      <comment value="If this value is missing, then it is not specified whether a code system is case

       sensitive or not. When case sensitivity is not known, systems SHOULD produce codes
       with the correct case, and treat codes as case-sensitive, since this will mean
       any incorrect interpretation of codes is not a silent failure. This element is
       primarily provided to support validation software.  Case-insensitive comparisons
       do not take locale into account, and will result in unsatisfactory results for
       certain locales. Character case definitions and conversions are out of scope for
       the FHIR standard, and the results of such operations are implementation dependent."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.caseSensitive"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="boolean"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.valueSet">      <path value="CodeSystem.valueSet"/>       <short value="Canonical reference to the value set with entire code system"/>       <definition value="Canonical reference to the value set that contains all codes in the code system

       independent of code status."/> 
      <comment value="The definition of the value set SHALL include all codes from this code system,

       independent of concept status, and only codes from this code system. It SHALL be
       immutable, and operations SHOULD support validation of any allowed code compositions."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.valueSet"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="canonical"/>         <targetProfile value="http://hl7.org/fhir/StructureDefinition/ValueSet"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.hierarchyMeaning">      <path value="CodeSystem.hierarchyMeaning"/>       <short value="grouped-by | is-a | part-of | classified-with"/>       <definition value="The meaning of the hierarchy of concepts as represented in this resource."/>       <comment value="Note that other representations might have a different hierarchy or none at all,

       and represent the information using properties."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.hierarchyMeaning"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="code"/>       </type>       <condition value="csd-2"/>       <condition value="csd-3"/>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="CodeSystemHierarchyMeaning"/>         </extension>         <strength value="required"/>         <description value="The meaning of the hierarchy of concepts in a code system."/>         <valueSet value="http://hl7.org/fhir/ValueSet/codesystem-hierarchy-meaning|6.0.0-ballot3"/>       </binding>     </element>     <element id="CodeSystem.compositional">      <path value="CodeSystem.compositional"/>       <short value="If code system defines a compositional grammar"/>       <definition value="The code system defines a compositional (post-coordination) grammar."/>       <comment value="Note that the code system resource does not define what the compositional grammar

       is, only whether or not there is one. Note that the code system resource does not
       define what the compositional grammar is, only whether or not there is one. Review
       the Using Code System X with HL7 Standards (where Code System X is a specific code
       system) pages at [terminology.hl7.org](https://terminology.hl7.org/external_terminologies.htm
      l) to learn about a code system's post coordination support. [Coding.code](datatypes-definitio
      ns.html#Coding.code) has some more information about how a post coordinated expression
       may be exchanged in a code element."/> 
      <alias value="grammar"/>       <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.compositional"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="boolean"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.versionNeeded">      <path value="CodeSystem.versionNeeded"/>       <short value="If definitions are not stable"/> 
      <definition value="This flag is used to signify that the code system does not commit to concept permanence
       across versions. If true, a version must be specified when referencing this code system.
      Best practice is that code systems do not redefine concepts, or that if concepts are redefined,
       a new code system definition is created. But this is not always possible, so some code
       systems may be defined as 'versionNeeded'.

Most code systems occasionally refine the displays defined for concepts between versions.
       Contexts in which the concept display values are validated may require that the version
       be specified for some code systems irrespective of the value of this property.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      The extent of the content of the code system (the concepts and codes it defines) are represented
       in this resource instance.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
          
        
        
        The extent of the content of the code system (the concepts and codes it defines) are represented
         in a code system resource.
        
      
    
    
      
      
      The canonical URL of the code system that this code system supplement is adding designations
       and properties to.
      
      
      
      
        
        
        
      
      
        
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      The total number of concepts defined by the code system. Where the code system has a compositional
       grammar, the basis of this count is defined by the system steward.
      The count of concepts defined in this resource cannot be more than this value but may
       be less for several reasons - see the content element.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      A filter that can be used in a value set compose statement when selecting concepts using
       a filter.
      Note that filters defined in code systems usually require custom code on the part of any
       terminology engine that will make them available for use in value set filters. For this
       reason, they are generally only seen in high value published terminologies.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      Unique id for the element within a resource (for internal references). This may be any
       string value that does not contain spaces.
      
      
      
        
        
        
      
    <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler magic
       (j)  -->
      
        
          
        
        
      
      
      
      
        
        
      
    
    
      
      

       across versions. If true, a version must be specified when referencing this code
       system."/> 
      <comment value="Best practice is that code systems do not redefine concepts, or that if concepts

       are redefined, a new code system definition is created. But this is not always
       possible, so some code systems may be defined as 'versionNeeded'.
Most code systems occasionally refine the displays defined for concepts between
       versions. Contexts in which the concept display values are validated may require
       that the version be specified for some code systems irrespective of the value of
       this property."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.versionNeeded"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="boolean"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.content">      <path value="CodeSystem.content"/>       <short value="not-present | example | fragment | complete | supplement"/>       <definition value="The extent of the content of the code system (the concepts and codes it defines)

       are represented in this resource instance."/> 
      <min value="1"/>       <max value="1"/>       <base>         <path value="CodeSystem.content"/>         <min value="1"/>         <max value="1"/>       </base>       <type>         <code value="code"/>       </type>       <condition value="csd-4"/>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="CodeSystemContentMode"/>         </extension>         <strength value="required"/>         <description value="The extent of the content of the code system (the concepts and codes it defines)

         are represented in a code system resource."/> 
        <valueSet value="http://hl7.org/fhir/ValueSet/codesystem-content-mode|6.0.0-ballot3"/>       </binding>     </element>     <element id="CodeSystem.supplements">      <path value="CodeSystem.supplements"/>       <short value="Canonical URL of Code System this adds designations and properties to"/>       <definition value="The canonical URL of the code system that this code system supplement is adding

       designations and properties to."/> 
      <comment value="The most common use of a code system supplement is to add additional language support."/>       <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.supplements"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="canonical"/>         <targetProfile value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </type>       <condition value="csd-4"/>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.count">      <path value="CodeSystem.count"/>       <short value="Total concepts in the code system"/>       <definition value="The total number of concepts defined by the code system. Where the code system

       has a compositional grammar, the basis of this count is defined by the system steward."/> 
      <comment value="The count of concepts defined in this resource cannot be more than this value but

       may be less for several reasons - see the content element."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.count"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="unsignedInt"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.filter">      <path value="CodeSystem.filter"/>       <short value="Filter that can be used in a value set"/>       <definition value="A filter that can be used in a value set compose statement when selecting concepts

       using a filter."/> 
      <comment value="Note that filters defined in code systems usually require custom code on the part

       of any terminology engine that will make them available for use in value set filters.
       For this reason, they are generally only seen in high value published terminologies."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.filter"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="BackboneElement"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children or both"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.filter.id">      <path value="CodeSystem.filter.id"/>       <representation value="xmlAttr"/>       <short value="Unique id for inter-element referencing"/>       <definition value="Unique id for the element within a resource (for internal references). This may

       be any string value that does not contain spaces."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="Element.id"/>         <min value="0"/>         <max value="1"/>       </base>       <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler

       magic (j)  -->
      <type>         <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">          <valueUrl value="string"/>         </extension>         <code value="http://hl7.org/fhirpath/System.String"/>       </type>       <condition value="ele-1"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="n/a"/>       </mapping>     </element>     <element id="CodeSystem.filter.extension">      <path value="CodeSystem.filter.extension"/>       <short value="Additional content defined by implementations"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the element. To make the use of extensions safe and manageable, there is a strict set
       of governance  applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part of the
       definition of the extension.
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
    
    
      
      

       of the element. To make the use of extensions safe and managable, there is a strict
       set of governance applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part
       of the definition of the extension."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="Element.extension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="n/a"/>       </mapping>     </element>     <element id="CodeSystem.filter.modifierExtension">      <path value="CodeSystem.filter.modifierExtension"/>       <short value="Extensions that cannot be ignored even if unrecognized"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the element and that modifies the understanding of the element in which it is contained
       and/or the understanding of the containing element's descendants. Usually modifier elements
       provide negation or qualification. To make the use of extensions safe and manageable,
       there is a strict set of governance applied to the definition and use of extensions. Though
       any implementer can define an extension, there is a set of requirements that SHALL be
       met as part of the definition of the extension. Applications processing a resource are
       required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource
       (including cannot change the meaning of modifierExtension itself).
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly
       distinguished from the vast majority of extensions which can be safely ignored.  This
       promotes interoperability by eliminating the need for implementers to prohibit the presence
       of extensions. For further information, see the [definition of modifier extensions](extensibility.ht
      ml#modifierExtension).
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      Modifier extensions are expected to modify the meaning or interpretation of the element
       that contains them
      
      
        
        
      
    
    
      
      
      The code that identifies this filter when it is used as a filter in [ValueSet](valueset.html#).compo
      se.include.filter.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
          
        
        
        
        
      
    
    
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
        
      
      
      
      A property defines an additional slot through which additional information can be provided
       about a concept.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      Unique id for the element within a resource (for internal references). This may be any
       string value that does not contain spaces.
      
      
      
        
        
        
      
    <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler magic
       (j)  -->
      
        
          
        
        
      
      
      
      
        
        
      
    
    
      
      

       of the element and that modifies the understanding of the element in which it is
       contained and/or the understanding of the containing element's descendants. Usually
       modifier elements provide negation or qualification. To make the use of extensions
       safe and managable, there is a strict set of governance applied to the definition
       and use of extensions. Though any implementer can define an extension, there is
       a set of requirements that SHALL be met as part of the definition of the extension.
       Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or
       DomainResource (including cannot change the meaning of modifierExtension itself)."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be

       clearly distinguished from the vast majority of extensions which can be safely
       ignored.  This promotes interoperability by eliminating the need for implementers
       to prohibit the presence of extensions. For further information, see the [definition
       of modifier extensions](extensibility.html#modifierExtension)."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <alias value="modifiers"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="BackboneElement.modifierExtension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <isModifier value="true"/>       <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the

       element that contains them"/> 
      <isSummary value="true"/>       <mapping>         <identity value="rim"/>         <map value="N/A"/>       </mapping>     </element>     <element id="CodeSystem.filter.code">      <extension url="http://hl7.org/fhir/tools/StructureDefinition/no-binding">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.filter.code"/>       <short value="Code that identifies the filter"/>       <definition value="The code that identifies this filter when it is used as a filter in [ValueSet](valueset.html#

      ).compose.include.filter."/> 
      <min value="1"/>       <max value="1"/>       <base>         <path value="CodeSystem.filter.code"/>         <min value="1"/>         <max value="1"/>       </base>       <type>         <code value="code"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.filter.description">      <path value="CodeSystem.filter.description"/>       <short value="How or why the filter is used"/>       <definition value="A description of how or why the filter is used."/>       <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.filter.description"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="string"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.filter.operator">      <path value="CodeSystem.filter.operator"/>       <short value="= | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | child-of

       | descendent-leaf | exists"/> 
      <definition value="A list of operators that can be used with the filter."/>       <min value="1"/>       <max value="*"/>       <base>         <path value="CodeSystem.filter.operator"/>         <min value="1"/>         <max value="*"/>       </base>       <type>         <code value="code"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="FilterOperator"/>         </extension>         <strength value="required"/>         <description value="The kind of operation to perform as a part of a property based filter."/>         <valueSet value="http://hl7.org/fhir/ValueSet/filter-operator|6.0.0-ballot3"/>       </binding>     </element>     <element id="CodeSystem.filter.value">      <path value="CodeSystem.filter.value"/>       <short value="What to use for the value"/>       <definition value="A description of what the value for the filter should be."/>       <min value="1"/>       <max value="1"/>       <base>         <path value="CodeSystem.filter.value"/>         <min value="1"/>         <max value="1"/>       </base>       <type>         <code value="string"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.property">      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-explicit-type-name">        <valueString value="Property"/>       </extension>       <path value="CodeSystem.property"/>       <short value="Additional information supplied about each concept"/>       <definition value="A property defines an additional slot through which additional information can

       be provided about a concept."/> 
      <comment value="Multiple occurrences of CodeSystem.concept.property may occur for a CodeSystem.property

       where     CodeSystem.concept.property.code is the same and CodeSystem.concept.property.value
       differs. For example: multiple designations for a single concept."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.property"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="BackboneElement"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children or both"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.property.id">      <path value="CodeSystem.property.id"/>       <representation value="xmlAttr"/>       <short value="Unique id for inter-element referencing"/>       <definition value="Unique id for the element within a resource (for internal references). This may

       be any string value that does not contain spaces."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="Element.id"/>         <min value="0"/>         <max value="1"/>       </base>       <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler

       magic (j)  -->
      <type>         <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">          <valueUrl value="string"/>         </extension>         <code value="http://hl7.org/fhirpath/System.String"/>       </type>       <condition value="ele-1"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="n/a"/>       </mapping>     </element>     <element id="CodeSystem.property.extension">      <path value="CodeSystem.property.extension"/>       <short value="Additional content defined by implementations"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the element. To make the use of extensions safe and manageable, there is a strict set
       of governance  applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part of the
       definition of the extension.
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
    
    
      
      

       of the element. To make the use of extensions safe and managable, there is a strict
       set of governance applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part
       of the definition of the extension."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="Element.extension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="n/a"/>       </mapping>     </element>     <element id="CodeSystem.property.modifierExtension">      <path value="CodeSystem.property.modifierExtension"/>       <short value="Extensions that cannot be ignored even if unrecognized"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the element and that modifies the understanding of the element in which it is contained
       and/or the understanding of the containing element's descendants. Usually modifier elements
       provide negation or qualification. To make the use of extensions safe and manageable,
       there is a strict set of governance applied to the definition and use of extensions. Though
       any implementer can define an extension, there is a set of requirements that SHALL be
       met as part of the definition of the extension. Applications processing a resource are
       required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource
       (including cannot change the meaning of modifierExtension itself).
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly
       distinguished from the vast majority of extensions which can be safely ignored.  This
       promotes interoperability by eliminating the need for implementers to prohibit the presence
       of extensions. For further information, see the [definition of modifier extensions](extensibility.ht
      ml#modifierExtension).
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      Modifier extensions are expected to modify the meaning or interpretation of the element
       that contains them
      
      
        
        
      
    
    
      
      
      A code that is used to identify the property. The code is used internally (in CodeSystem.concept.pro
      perty.code) and also externally, such as in property filters.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      Reference to the formal meaning of the property. One possible source of meaning is the
       [Concept Properties](codesystem-concept-properties.html) code system.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      The type of the property value. Properties of type &quot;code&quot; contain a code defined
       by the code system (e.g. a reference to another defined concept).
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
          
        
        
        
        
      
    
    
      
        
      
      
      

       of the element and that modifies the understanding of the element in which it is
       contained and/or the understanding of the containing element's descendants. Usually
       modifier elements provide negation or qualification. To make the use of extensions
       safe and managable, there is a strict set of governance applied to the definition
       and use of extensions. Though any implementer can define an extension, there is
       a set of requirements that SHALL be met as part of the definition of the extension.
       Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or
       DomainResource (including cannot change the meaning of modifierExtension itself)."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be

       clearly distinguished from the vast majority of extensions which can be safely
       ignored.  This promotes interoperability by eliminating the need for implementers
       to prohibit the presence of extensions. For further information, see the [definition
       of modifier extensions](extensibility.html#modifierExtension)."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <alias value="modifiers"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="BackboneElement.modifierExtension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <isModifier value="true"/>       <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the

       element that contains them"/> 
      <isSummary value="true"/>       <mapping>         <identity value="rim"/>         <map value="N/A"/>       </mapping>     </element>     <element id="CodeSystem.property.code">      <extension url="http://hl7.org/fhir/tools/StructureDefinition/no-binding">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.property.code"/>       <short value="Identifies the property on the concepts, and when referred to in operations"/>       <definition value="A code that is used to identify the property. The code is used internally (in CodeSystem.conc

      ept.property.code) and also externally, such as in property filters."/> 
      <min value="1"/>       <max value="1"/>       <base>         <path value="CodeSystem.property.code"/>         <min value="1"/>         <max value="1"/>       </base>       <type>         <code value="code"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.property.uri">      <path value="CodeSystem.property.uri"/>       <short value="Formal identifier for the property"/>       <definition value="Reference to the formal meaning of the property. One possible source of meaning

       is the [Concept Properties](codesystem-concept-properties.html) code system."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.property.uri"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="uri"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.property.description">      <path value="CodeSystem.property.description"/>       <short value="Why the property is defined, and/or what it conveys"/>       <definition value="A description of the property- why it is defined, and how its value might be used."/>       <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.property.description"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="string"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.property.type">      <path value="CodeSystem.property.type"/>       <short value="code | Coding | string | integer | boolean | dateTime | decimal"/>       <definition value="The type of the property value. Properties of type &quot;code&quot; contain a code

       defined by the code system (e.g. a reference to another defined concept)."/> 
      <min value="1"/>       <max value="1"/>       <base>         <path value="CodeSystem.property.type"/>         <min value="1"/>         <max value="1"/>       </base>       <type>         <code value="code"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="PropertyType"/>         </extension>         <strength value="required"/>         <description value="The type of a property value."/>         <valueSet value="http://hl7.org/fhir/ValueSet/concept-property-type|6.0.0-ballot3"/>       </binding>     </element>     <element id="CodeSystem.concept">      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-explicit-type-name">        <valueString value="ConceptDefinition"/>       </extension>       <path value="CodeSystem.concept"/>       <short value="Concepts in the code system"/> 
      <definition value="Concepts that are in the code system. The concept definitions are inherently hierarchical,
       but the definitions must be consulted to determine what the meanings of the hierarchical
       relationships are.
      If this is empty, it means that the code system resource does not represent the content
       of the code system.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      Unique id for the element within a resource (for internal references). This may be any
       string value that does not contain spaces.
      
      
      
        
        
        
      
    <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler magic
       (j)  -->
      
        
          
        
        
      
      
      
      
        
        
      
    
    
      
      

       relationships are."/> 
      <comment value="If this is empty, it means that the code system resource does not represent the

       content of the code system."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.concept"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="BackboneElement"/>       </type>       <constraint>         <key value="csd-6"/>         <severity value="error"/>         <human value="If a concept identifies an alternate, there must be a reciprocal relationship"/>         <expression value="defineVariable('sc', code).property.all((code = 'alternateCode') implies defineVariable('ac',

         value).%resource.repeat(concept).where(code = %ac).exists(property.where(code =
         'alternateCode').value = %sc))"/> 
        <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children or both"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.id">      <path value="CodeSystem.concept.id"/>       <representation value="xmlAttr"/>       <short value="Unique id for inter-element referencing"/>       <definition value="Unique id for the element within a resource (for internal references). This may

       be any string value that does not contain spaces."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="Element.id"/>         <min value="0"/>         <max value="1"/>       </base>       <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler

       magic (j)  -->
      <type>         <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">          <valueUrl value="string"/>         </extension>         <code value="http://hl7.org/fhirpath/System.String"/>       </type>       <condition value="ele-1"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="n/a"/>       </mapping>     </element>     <element id="CodeSystem.concept.extension">      <path value="CodeSystem.concept.extension"/>       <short value="Additional content defined by implementations"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the element. To make the use of extensions safe and manageable, there is a strict set
       of governance  applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part of the
       definition of the extension.
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
    
    
      
      

       of the element. To make the use of extensions safe and managable, there is a strict
       set of governance applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part
       of the definition of the extension."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="Element.extension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="n/a"/>       </mapping>     </element>     <element id="CodeSystem.concept.modifierExtension">      <path value="CodeSystem.concept.modifierExtension"/>       <short value="Extensions that cannot be ignored even if unrecognized"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the element and that modifies the understanding of the element in which it is contained
       and/or the understanding of the containing element's descendants. Usually modifier elements
       provide negation or qualification. To make the use of extensions safe and manageable,
       there is a strict set of governance applied to the definition and use of extensions. Though
       any implementer can define an extension, there is a set of requirements that SHALL be
       met as part of the definition of the extension. Applications processing a resource are
       required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource
       (including cannot change the meaning of modifierExtension itself).
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly
       distinguished from the vast majority of extensions which can be safely ignored.  This
       promotes interoperability by eliminating the need for implementers to prohibit the presence
       of extensions. For further information, see the [definition of modifier extensions](extensibility.ht
      ml#modifierExtension).
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      Modifier extensions are expected to modify the meaning or interpretation of the element
       that contains them
      
      
        
        
      
    
    
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      A human readable string that is the recommended default way to present this concept to
       a user.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      The formal definition of the concept. The code system resource does not make formal definitions
       required, because of the prevalence of legacy systems. However, they are highly recommended,
       as without them there is no formal meaning associated with the concept.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      Additional representations for the concept - other languages, aliases, specialized purposes,
       used for particular purposes, etc.
      Concepts have both a ```display``` and an array of ```designation```. The display is equivalent
       to a special designation with an implied ```designation.use``` of &quot;primary code&quot;
       and a language equal to the [Resource Language](resource.html#language).

       of the element and that modifies the understanding of the element in which it is
       contained and/or the understanding of the containing element's descendants. Usually
       modifier elements provide negation or qualification. To make the use of extensions
       safe and managable, there is a strict set of governance applied to the definition
       and use of extensions. Though any implementer can define an extension, there is
       a set of requirements that SHALL be met as part of the definition of the extension.
       Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or
       DomainResource (including cannot change the meaning of modifierExtension itself)."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be

       clearly distinguished from the vast majority of extensions which can be safely
       ignored.  This promotes interoperability by eliminating the need for implementers
       to prohibit the presence of extensions. For further information, see the [definition
       of modifier extensions](extensibility.html#modifierExtension)."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <alias value="modifiers"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="BackboneElement.modifierExtension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <isModifier value="true"/>       <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the

       element that contains them"/> 
      <isSummary value="true"/>       <mapping>         <identity value="rim"/>         <map value="N/A"/>       </mapping>     </element>     <element id="CodeSystem.concept.code">      <extension url="http://hl7.org/fhir/tools/StructureDefinition/no-binding">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.concept.code"/>       <short value="Code that identifies concept"/>       <definition value="A code - a text symbol - that uniquely identifies the concept within the code system."/>       <min value="1"/>       <max value="1"/>       <base>         <path value="CodeSystem.concept.code"/>         <min value="1"/>         <max value="1"/>       </base>       <type>         <code value="code"/>       </type>       <condition value="csd-1"/>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.display">      <path value="CodeSystem.concept.display"/>       <short value="Text to display to the user"/>       <definition value="A human readable string that is the recommended default way to present this concept

       to a user."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.concept.display"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="string"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.definition">      <path value="CodeSystem.concept.definition"/>       <short value="Formal definition"/>       <definition value="The formal definition of the concept. The code system resource does not make formal

       definitions required, because of the prevalence of legacy systems. However, they
       are highly recommended, as without them there is no formal meaning associated with
       the concept."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.concept.definition"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="string"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.designation">      <path value="CodeSystem.concept.designation"/>       <short value="Additional representations for the concept"/>       <definition value="Additional representations for the concept - other languages, aliases, specialized

       purposes, used for particular purposes, etc."/> 
      <comment value="Concepts have both a ```display``` and an array of ```designation```. The display

       is equivalent to a special designation with an implied ```designation.use``` of
       &quot;primary designation&quot; and a language equal to the [Resource Language](resource.html
      #language)."/> 

      <requirements value="Many concept definition systems support multiple representations, in multiple languages,
       and for multiple purposes.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      Unique id for the element within a resource (for internal references). This may be any
       string value that does not contain spaces.
      
      
      
        
        
        
      
    <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler magic
       (j)  -->
      
        
          
        
        
      
      
      
      
        
        
      
    
    
      
      

       and for multiple purposes."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.concept.designation"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="BackboneElement"/>       </type>       <constraint>         <key value="csd-5"/>         <severity value="error"/>         <human value="Must have a value for concept.designation.use if concept.designation.additionalUse

         is present"/> 
        <expression value="additionalUse.exists() implies use.exists()"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children or both"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.designation.id">      <path value="CodeSystem.concept.designation.id"/>       <representation value="xmlAttr"/>       <short value="Unique id for inter-element referencing"/>       <definition value="Unique id for the element within a resource (for internal references). This may

       be any string value that does not contain spaces."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="Element.id"/>         <min value="0"/>         <max value="1"/>       </base>       <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler

       magic (j)  -->
      <type>         <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">          <valueUrl value="string"/>         </extension>         <code value="http://hl7.org/fhirpath/System.String"/>       </type>       <condition value="ele-1"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="n/a"/>       </mapping>     </element>     <element id="CodeSystem.concept.designation.extension">      <path value="CodeSystem.concept.designation.extension"/>       <short value="Additional content defined by implementations"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the element. To make the use of extensions safe and manageable, there is a strict set
       of governance  applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part of the
       definition of the extension.
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
    
    
      
      

       of the element. To make the use of extensions safe and managable, there is a strict
       set of governance applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part
       of the definition of the extension."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="Element.extension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="n/a"/>       </mapping>     </element>     <element id="CodeSystem.concept.designation.modifierExtension">      <path value="CodeSystem.concept.designation.modifierExtension"/>       <short value="Extensions that cannot be ignored even if unrecognized"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the element and that modifies the understanding of the element in which it is contained
       and/or the understanding of the containing element's descendants. Usually modifier elements
       provide negation or qualification. To make the use of extensions safe and manageable,
       there is a strict set of governance applied to the definition and use of extensions. Though
       any implementer can define an extension, there is a set of requirements that SHALL be
       met as part of the definition of the extension. Applications processing a resource are
       required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource
       (including cannot change the meaning of modifierExtension itself).
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly
       distinguished from the vast majority of extensions which can be safely ignored.  This
       promotes interoperability by eliminating the need for implementers to prohibit the presence
       of extensions. For further information, see the [definition of modifier extensions](extensibility.ht
      ml#modifierExtension).
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      Modifier extensions are expected to modify the meaning or interpretation of the element
       that contains them
      
      
        
        
      
    
    
      
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
          
        
        
          
        
        
          
        
        
        
        
      
    
    
      
      
      
      If no use is provided, the designation can be assumed to be suitable for general display
       to a human user.
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
      
        
          
        
        
        
        
      
    
    
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
        
      
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      Unique id for the element within a resource (for internal references). This may be any
       string value that does not contain spaces.
      
      
      
        
        
        
      
    <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler magic
       (j)  -->
      
        
          
        
        
      
      
      
      
        
        
      
    
    
      
      

       of the element and that modifies the understanding of the element in which it is
       contained and/or the understanding of the containing element's descendants. Usually
       modifier elements provide negation or qualification. To make the use of extensions
       safe and managable, there is a strict set of governance applied to the definition
       and use of extensions. Though any implementer can define an extension, there is
       a set of requirements that SHALL be met as part of the definition of the extension.
       Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or
       DomainResource (including cannot change the meaning of modifierExtension itself)."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be

       clearly distinguished from the vast majority of extensions which can be safely
       ignored.  This promotes interoperability by eliminating the need for implementers
       to prohibit the presence of extensions. For further information, see the [definition
       of modifier extensions](extensibility.html#modifierExtension)."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <alias value="modifiers"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="BackboneElement.modifierExtension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <isModifier value="true"/>       <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the

       element that contains them"/> 
      <isSummary value="true"/>       <mapping>         <identity value="rim"/>         <map value="N/A"/>       </mapping>     </element>     <element id="CodeSystem.concept.designation.language">      <path value="CodeSystem.concept.designation.language"/>       <short value="Human language of the designation"/>       <definition value="The language this designation is defined for."/>       <comment value="In the absence of a language, the resource language applies."/>       <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.concept.designation.language"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="code"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="Language"/>         </extension>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">          <valueBoolean value="true"/>         </extension>         <strength value="required"/>         <description value="IETF language tag for a human language"/>         <valueSet value="http://hl7.org/fhir/ValueSet/all-languages|6.0.0-ballot3"/>         <additional>           <purpose value="starter"/>           <valueSet value="http://hl7.org/fhir/ValueSet/languages"/>         </additional>       </binding>     </element>     <element id="CodeSystem.concept.designation.use">      <path value="CodeSystem.concept.designation.use"/>       <short value="Details how this designation would be used"/>       <definition value="A code that details how this designation would be used."/>       <comment value="If no use is provided, the designation can be assumed to be suitable for general

       display to a human user."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="CodeSystem.concept.designation.use"/>         <min value="0"/>         <max value="1"/>       </base>       <type>         <code value="Coding"/>       </type>       <condition value="csd-5"/>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="ConceptDesignationUse"/>         </extension>         <strength value="extensible"/>         <description value="Details of how a designation would be used."/>         <valueSet value="http://hl7.org/fhir/ValueSet/designation-use"/>       </binding>     </element>     <element id="CodeSystem.concept.designation.additionalUse">      <path value="CodeSystem.concept.designation.additionalUse"/>       <short value="Additional ways how this designation would be used"/>       <definition value="Additional codes that detail how this designation would be used, if there is more

       than one use."/> 
      <comment value="This was added rather than increasing the cardinality of .use to 0..* in order

       to maintain backward compatibility."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.concept.designation.additionalUse"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Coding"/>       </type>       <condition value="csd-5"/>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="ConceptDesignationUse"/>         </extension>         <strength value="extensible"/>         <description value="Details of how a designation would be used."/>         <valueSet value="http://hl7.org/fhir/ValueSet/designation-use"/>       </binding>     </element>     <element id="CodeSystem.concept.designation.value">      <path value="CodeSystem.concept.designation.value"/>       <short value="The text value for this designation"/>       <definition value="The text value for this designation."/>       <min value="1"/>       <max value="1"/>       <base>         <path value="CodeSystem.concept.designation.value"/>         <min value="1"/>         <max value="1"/>       </base>       <type>         <code value="string"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.property">      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-explicit-type-name">        <valueString value="ConceptProperty"/>       </extension>       <path value="CodeSystem.concept.property"/>       <short value="Property value for the concept"/>       <definition value="A property value for this concept."/>       <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.concept.property"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="BackboneElement"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children or both"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.property.id">      <path value="CodeSystem.concept.property.id"/>       <representation value="xmlAttr"/>       <short value="Unique id for inter-element referencing"/>       <definition value="Unique id for the element within a resource (for internal references). This may

       be any string value that does not contain spaces."/> 
      <min value="0"/>       <max value="1"/>       <base>         <path value="Element.id"/>         <min value="0"/>         <max value="1"/>       </base>       <!--  Note: special primitive values have a FHIRPath system type. e.g. this is compiler

       magic (j)  -->
      <type>         <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">          <valueUrl value="string"/>         </extension>         <code value="http://hl7.org/fhirpath/System.String"/>       </type>       <condition value="ele-1"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="n/a"/>       </mapping>     </element>     <element id="CodeSystem.concept.property.extension">      <path value="CodeSystem.concept.property.extension"/>       <short value="Additional content defined by implementations"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the element. To make the use of extensions safe and manageable, there is a strict set
       of governance  applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part of the
       definition of the extension.
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      
      
        
        
      
    
    
      
      

       of the element. To make the use of extensions safe and managable, there is a strict
       set of governance applied to the definition and use of extensions. Though any implementer
       can define an extension, there is a set of requirements that SHALL be met as part
       of the definition of the extension."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="Element.extension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="n/a"/>       </mapping>     </element>     <element id="CodeSystem.concept.property.modifierExtension">      <path value="CodeSystem.concept.property.modifierExtension"/>       <short value="Extensions that cannot be ignored even if unrecognized"/> 
      <definition value="May be used to represent additional information that is not part of the basic definition
       of the element and that modifies the understanding of the element in which it is contained
       and/or the understanding of the containing element's descendants. Usually modifier elements
       provide negation or qualification. To make the use of extensions safe and manageable,
       there is a strict set of governance applied to the definition and use of extensions. Though
       any implementer can define an extension, there is a set of requirements that SHALL be
       met as part of the definition of the extension. Applications processing a resource are
       required to check for modifier extensions.

Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource
       (including cannot change the meaning of modifierExtension itself).
      There can be no stigma associated with the use of extensions by any application, project,
       or standard - regardless of the institution or jurisdiction that uses or defines the extensions.
        The use of extensions is what allows the FHIR specification to retain a core level of
       simplicity for everyone.
      Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly
       distinguished from the vast majority of extensions which can be safely ignored.  This
       promotes interoperability by eliminating the need for implementers to prohibit the presence
       of extensions. For further information, see the [definition of modifier extensions](extensibility.ht
      ml#modifierExtension).
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
        
        
        
        
        
        
      
      
      Modifier extensions are expected to modify the meaning or interpretation of the element
       that contains them
      
      
        
        
      
    
    
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      
      
      
      
        
        
        
      
      
        
      
      
        
      
      
        
      
      
        
      
      
        
      
      
        
      
      
        
      
      
        
        
        
        
        
        
      
      
      
    
    
      
      
      Defines children of a concept to produce a hierarchy of concepts. The nature of the relationships
       is variable (is-a/contains/categorizes) - see hierarchyMeaning.
      
      
      
        
        
        
      
      
      
        
        
        
        
        
        
      
      
      
    
  
  
    
      
      
      The CodeSystem resource is used to declare the existence of and describe a code system
       or code system supplement and its key properties, and optionally define a part or all
       of its content.
      
      
      
        
        
        
        
        
      
      
        
        

       of the element and that modifies the understanding of the element in which it is
       contained and/or the understanding of the containing element's descendants. Usually
       modifier elements provide negation or qualification. To make the use of extensions
       safe and managable, there is a strict set of governance applied to the definition
       and use of extensions. Though any implementer can define an extension, there is
       a set of requirements that SHALL be met as part of the definition of the extension.
       Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or
       DomainResource (including cannot change the meaning of modifierExtension itself)."/> 
      <comment value="There can be no stigma associated with the use of extensions by any application,

       project, or standard - regardless of the institution or jurisdiction that uses
       or defines the extensions.  The use of extensions is what allows the FHIR specification
       to retain a core level of simplicity for everyone."/> 
      <requirements value="Modifier extensions allow for extensions that *cannot* be safely ignored to be

       clearly distinguished from the vast majority of extensions which can be safely
       ignored.  This promotes interoperability by eliminating the need for implementers
       to prohibit the presence of extensions. For further information, see the [definition
       of modifier extensions](extensibility.html#modifierExtension)."/> 
      <alias value="extensions"/>       <alias value="user content"/>       <alias value="modifiers"/>       <min value="0"/>       <max value="*"/>       <base>         <path value="BackboneElement.modifierExtension"/>         <min value="0"/>         <max value="*"/>       </base>       <type>         <code value="Extension"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <isModifier value="true"/>       <isModifierReason value="Modifier extensions are expected to modify the meaning or interpretation of the

       element that contains them"/> 
      <isSummary value="true"/>       <mapping>         <identity value="rim"/>         <map value="N/A"/>       </mapping>     </element>     <element id="CodeSystem.concept.property.code">      <extension url="http://hl7.org/fhir/tools/StructureDefinition/no-binding">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.concept.property.code"/>       <short value="Reference to CodeSystem.property.code or a FHIR defined concept-property"/>       <definition value="A code that is a reference to CodeSystem.property.code or is a code from [http://hl7.org/fhir

      /concept-properties](codesystem.html#defined-props) in the case that there is no
       corresponding code defined in `CodeSystem.property.code`."/> 
      <min value="1"/>       <max value="1"/>       <base>         <path value="CodeSystem.concept.property.code"/>         <min value="1"/>         <max value="1"/>       </base>       <type>         <code value="code"/>       </type>       <condition value="csd-3"/>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.property.value[x]">      <path value="CodeSystem.concept.property.value[x]"/>       <short value="Value of the property for this concept"/>       <definition value="The value of this property."/>       <min value="1"/>       <max value="1"/>       <base>         <path value="CodeSystem.concept.property.value[x]"/>         <min value="1"/>         <max value="1"/>       </base>       <type>         <code value="code"/>       </type>       <type>         <code value="Coding"/>       </type>       <type>         <code value="string"/>       </type>       <type>         <code value="integer"/>       </type>       <type>         <code value="boolean"/>       </type>       <type>         <code value="dateTime"/>       </type>       <type>         <code value="decimal"/>       </type>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.concept">      <path value="CodeSystem.concept.concept"/>       <short value="Child Concepts (is-a/contains/categorizes)"/>       <definition value="Defines children of a concept to produce a hierarchy of concepts. The nature of

       the relationships is variable (is-a/contains/categorizes) - see hierarchyMeaning."/> 
      <min value="0"/>       <max value="*"/>       <base>         <path value="CodeSystem.concept.concept"/>         <min value="0"/>         <max value="*"/>       </base>       <contentReference value="#CodeSystem.concept"/>       <constraint>         <key value="ele-1"/>         <severity value="error"/>         <human value="All FHIR elements must have a @value or children"/>         <expression value="hasValue() or (children().count() &gt; id.count())"/>         <source value="http://hl7.org/fhir/StructureDefinition/Element"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>   </snapshot>   <differential>     <element id="CodeSystem">      <path value="CodeSystem"/>       <short value="Declares the existence of and describes a code system or code system supplement"/>       <definition value="The CodeSystem resource is used to declare the existence of and describe a code

       system or code system supplement and its key properties, and optionally define
       a part or all of its content."/> 
      <min value="0"/>       <max value="*"/>       <constraint>         <key value="csd-1"/>         <severity value="error"/>         <human value="Within a code system definition, all the codes SHALL be unique"/>         <expression value="concept.exists() implies concept.code.combine(%resource.concept.descendants().concept.code).i

        sDistinct()"/> 
        <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <key value="csd-2"/>         <severity value="warning"/>         <human value="If there is an explicit hierarchy, a hierarchyMeaning should be provided"/>         <expression value="concept.concept.exists() implies hierarchyMeaning.exists()"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <key value="csd-3"/>         <severity value="warning"/>         <human value="If there is an implicit hierarchy, a hierarchyMeaning should be provided"/>         <expression value="concept.where(property.code = 'parent' or property.code = 'child').exists() implies

         hierarchyMeaning.exists()"/> 
        <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <key value="cnl-0"/>         <severity value="warning"/> 
        <human value="Name should be usable as an identifier for the module by machine processing applications
         such as code generation
        
        
      
      
        
        
      
    
    
      
      
      An absolute URI that is used to identify this code system when it is referenced in a specification,
       model, design or an instance; also called its canonical identifier. This SHOULD be globally
       unique and SHOULD be a literal address at which at which an authoritative instance of
       this code system is (or will be) published. This URL can be the target of a canonical
       reference. It SHALL remain the same when the code system is stored on different servers.
       This is used in [Coding](datatypes.html#Coding).system.
      Can be a urn:uuid: or a urn:oid: but real http: addresses are preferred.  Multiple instances
       may share the same URL if they have a distinct version.

The determination of when to create a new version of a resource (same url, new version)
       vs. defining a new artifact is up to the author.  Considerations for making this decision
       are found in [Technical and Business Versions](resource.html#versions). 

In some cases, the resource can no longer be found at the stated url, but the url itself
       cannot change. Implementations can use the [meta.source](resource.html#meta) element to
       indicate where the current master source of the resource can be found.
      
      
      
      
        
      
      
      
        
        
      
      
        
        
      
    
    
      
      
      A formal identifier that is used to identify this code system when it is represented in
       other formats, or referenced in a specification, model, design or an instance.
      Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier)
       data type, and can then identify this code system outside of FHIR, where it is not possible
       to use the logical URI.  Note that HL7 defines at least three identifiers for many of
       its code systems - the FHIR canonical URL, the OID and the V2 Table 0396 mnemonic code.

         such as code generation"/> 
        <expression value="name.exists() implies name.matches('^[A-Z]([A-Za-z0-9_]){1,254}$')"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <key value="csd-4"/>         <severity value="error"/>         <human value="If the code system content = supplement, it must nominate what it's a supplement

         for"/> 
        <expression value="CodeSystem.content = 'supplement' implies CodeSystem.supplements.exists()"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <constraint>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice">          <valueBoolean value="true"/>         </extension>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bestpractice-explanation">          <valueMarkdown value="There is scope for unsafe interpretation of codes if it's not known whether the

           CodeSystem is case sensitive or not"/> 
        </extension>         <key value="csd-7"/>         <severity value="warning"/>         <human value="caseSensitive SHOULD be provided"/>         <expression value="caseSensitive.exists()"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <mapping>         <identity value="w5"/>         <map value="conformance.terminology"/>       </mapping>       <mapping>         <identity value="rim"/>         <map value="N/A"/>       </mapping>     </element>     <element id="CodeSystem.url">      <path value="CodeSystem.url"/>       <short value="Canonical identifier for this code system, represented as a URI (globally unique)

       (Coding.system)"/> 
      <definition value="An absolute URI that is used to identify this code system when it is referenced

       in a specification, model, design or an instance; also called its canonical identifier.
       This SHOULD be globally unique and SHOULD be a literal address at which an authoritative
       instance of this code system is (or will be) published. This URL can be the target
       of a canonical reference. It SHALL remain the same when the code system is stored
       on different servers. This is used in [Coding](datatypes.html#Coding).system."/> 
      <comment value="Can be a urn:uuid: or a urn:oid: but real http: addresses are preferred.  Multiple

       instances may share the same URL if they have a distinct version.
The determination of when to create a new version of a resource (same url, new
       version) vs. defining a new artifact is up to the author.  Considerations for making
       this decision are found in [Technical and Business Versions](resource.html#versions).
       
In some cases, the resource can no longer be found at the stated url, but the url
       itself cannot change. Implementations can use the [meta.source](resource.html#meta)
       element to indicate where the current master source of the resource can be found."/> 
      <requirements value="Allows the code system to be referenced by a single globally unique identifier."/>       <min value="0"/>       <max value="1"/>       <type>         <code value="uri"/>       </type>       <constraint>         <key value="cnl-1"/>         <severity value="warning"/>         <human value="URL should not contain | or # - these characters make processing canonical references

         problematic"/> 
        <expression value="exists() implies matches('^[^|# ]+$')"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.identifier"/>       </mapping>     </element>     <element id="CodeSystem.identifier">      <path value="CodeSystem.identifier"/>       <short value="Additional identifier for the code system (business identifier)"/>       <definition value="A formal identifier that is used to identify this code system when it is represented

       in other formats, or referenced in a specification, model, design or an instance."/> 

      <requirements value="Allows externally provided and/or usable business identifiers to be easily associated
       with the module.
      
      
      
        
      
      
      
        
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      The identifier that is used to identify this version of the code system when it is referenced
       in a specification, model, design or instance. This is an arbitrary value managed by the
       code system author and is not expected to be globally unique. For example, it might be
       a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation
       that versions can be placed in a lexicographical sequence. This is used in [Coding](datatypes.html#C
      oding).version.
      There may be different code system instances that have the same identifier but different
       versions.  The version can be appended to the url in a reference to allow a reference
       to a particular business version of the code system with the format [url]|[version].
      
      
      
        
      
      
      
        
        
      
      
        
        
      
    
    
      
      
      A natural language name identifying the code system. This name should be usable as an
       identifier for the module by machine processing applications such as code generation.

       with the module."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="Identifier"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.identifier"/>       </mapping>       <mapping>         <identity value="objimpl"/>         <map value="no-gen-base"/>       </mapping>     </element>     <element id="CodeSystem.version">      <path value="CodeSystem.version"/>       <short value="Business version of the code system (Coding.version)"/>       <definition value="The identifier that is used to identify this version of the code system when it

       is referenced in a specification, model, design or instance. This is an arbitrary
       value managed by the code system author and is not expected to be globally unique.
       For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not
       available. There is also no expectation that versions can be placed in a lexicographical
       sequence. This is used in [Coding](datatypes.html#Coding).version."/> 
      <comment value="There may be different code system instances that have the same identifier but

       different versions.  The version can be appended to the url in a reference to allow
       a reference to a particular business version of the code system with the format
       [url]|[version]. The version SHOULD NOT contain a '#' - see [Business Version](resource.html#
      bv-format)."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="string"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.version"/>       </mapping>     </element>     <element id="CodeSystem.versionAlgorithm[x]">      <path value="CodeSystem.versionAlgorithm[x]"/>       <short value="How to compare versions"/>       <definition value="Indicates the mechanism used to compare versions to determine which CodeSystem

       is more current."/> 
      <comment value="If set as a string, this is a FHIRPath expression that has two additional context

       variables passed in - %version1 and %version2 and will return a negative number
       if version1 is newer, a positive number if version2 and a 0 if the version ordering
       can't be successfully be determined."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="string"/>       </type>       <type>         <code value="Coding"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <binding>         <strength value="extensible"/>         <valueSet value="http://hl7.org/fhir/ValueSet/version-algorithm"/>       </binding>     </element>     <element id="CodeSystem.name">      <path value="CodeSystem.name"/>       <short value="Name for this code system (computer friendly)"/>       <definition value="A natural language name identifying the code system. This name should be usable

       as an identifier for the module by machine processing applications such as code
       generation."/> 

      <comment value="The name is not expected to be globally unique. The name should be a simple alphanumeric
       type name to ensure that it is machine-processing friendly.
      
      
      
      
        
      
      
      
    
    
      
      
      

       type name to ensure that it is machine-processing friendly."/> 
      <requirements value="Support human navigation and code generation."/>       <min value="0"/>       <max value="1"/>       <type>         <code value="string"/>       </type>       <condition value="cnl-0"/>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.title">      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.title"/>       <short value="Name for this code system (human friendly)"/>       <definition value="A short, descriptive, user-friendly title for the code system."/> 
      <comment value="This name does not need to be machine-processing friendly and may contain punctuation,
       white-space, etc.
      
      
      
        
      
      
      
        
        
      
    
    
      
      
      
      
      
      
      
        
      
      
      This is labeled as &quot;Is Modifier&quot; because applications should not use a retired
       {{title}} without due consideration
      
      
        
          
        
        
          
        
        
        
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      A Boolean value to indicate that this code system is authored for testing purposes (or
       education/evaluation/marketing) and is not intended to be used for genuine usage.
      
      Enables experimental content to be developed following the same lifecycle that would be
       used for a production-level code system.
      
      
      
        
      
      
      
        
        
      
      
        
        
      
    
    
      
      
      The date  (and optionally time) when the code system was published. The date must change
       when the business version changes and it must change if the status code changes. In addition,
       it should change when the substantive content of the code system changes.
      Note that this is not the same as the resource last-modified-date, since the resource
       may be a secondary representation of the code system. Additional specific dates may be
       added as extensions or be found by consulting Provenances associated with past versions
       of the resource.
      
      
      
      
        
      
      
      
        
        
      
      
        
        
      
    
    
      
      
      
      Usually an organization but may be an individual. The publisher (or steward) of the code
       system is the organization or individual primarily responsible for the maintenance and
       upkeep of the code system. This is not necessarily the same individual or organization
       that developed and initially authored the content. The publisher is the primary point
       of contact for questions or issues with the code system. This item SHOULD be populated
       unless the information is available from context.
      Helps establish the &quot;authority/credibility&quot; of the code system.  May also allow
       for contact.
      
      
      
        
      
      
      
        
        
      
      
        
        
      
    
    
      
      
      
      
      
      
      
        
      
      
      
        
        
      
    
    
      
      
      
      This description can be used to capture details such as why the code system was built,
       comments about misuse, instructions for clinical use and interpretation, literature references,
       examples from the paper world, etc. It is not a rendering of the code system as conveyed
       in the 'text' field of the resource itself. This item SHOULD be populated unless the information
       is available from context (e.g. the language of the code system is presumed to be the
       predominant language in the place the code system was created).
      
      
      
      
      
        
      
      
        
        
      
      
        
        
      
    
    
      
        
      
      
      
      The content was developed with a focus and intent of supporting the contexts that are
       listed. These contexts may be general categories (gender, age, ...) or may be references
       to specific programs (insurance plans, studies, ...) and may be used to assist with indexing
       and searching for appropriate code system instances.
      When multiple useContexts are specified, there is no expectation that all or any of the
       contexts apply.
      
      
      
      
        
      
      
      
        
        
      
    
    
      
      
      
      It may be possible for the code system to be used in jurisdictions other than those for
       which it was originally designed or intended.
      
      
      
        
      
      
      
        
          
        
        
          
        
        
        
        
      
      
        
        
      
    
    
      
      
      
      This element does not describe the usage of the code system. Instead, it provides traceability
       of ''why'' the resource is either needed or ''why'' it is defined as it is.  This may
       be used to point to source materials or specifications that drove the structure of this
       code system.
      
      
      
        
      
      
        
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      A copyright statement relating to the code system and/or its contents. Copyright statements
       are generally legal restrictions on the use and publishing of the code system.
      ... Sometimes, the copyright differs between the code system and the codes that are included.
       The copyright statement should clearly differentiate between these when required.
      Consumers must be able to determine any legal restrictions on the use of the code system
       and/or its content.
      
      
      
      
      
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      If code comparison is case sensitive when codes within this system are compared to each
       other.
      If this value is missing, then it is not specified whether a code system is case sensitive
       or not. When the rule is not known, Postel's law should be followed: produce codes with
       the correct case, and accept codes in any case. This element is primarily provided to
       support validation software.
      
      
      
        
      
      
    
    
      
      
      
      The definition of the value set SHALL include all codes from this code system and only
       codes from this code system, and it SHALL be immutable.
      
      
      
        
        
      
      
    
    
      
      
      
      Note that other representations might have a different hierarchy or none at all, and represent
       the information using properties.
      
      
      
        
      
      
      
        
          
        
        
        
        
      
    
    
      
      
      
      Note that the code system resource does not define what the compositional grammar is,
       only whether or not there is one.
      
      
      
      
        
      
      
    
    
      
      

       white-space, etc."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="string"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.status">      <path value="CodeSystem.status"/>       <short value="draft | active | retired | unknown"/>       <definition value="The status of this code system. Enables tracking the life-cycle of the content."/>       <comment value="Allows filtering of code systems that are appropriate for use versus not.
See guidance around (not) making local changes to elements [here](canonicalresource.html#loca
      lization)."/> 
      <min value="1"/>       <max value="1"/>       <type>         <code value="code"/>       </type>       <mustSupport value="false"/>       <isModifier value="true"/>       <isModifierReason value="This is labeled as &quot;Is Modifier&quot; because applications should not use

       a retired CodeSystem without due consideration"/> 
      <isSummary value="true"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="PublicationStatus"/>         </extension>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">          <valueBoolean value="true"/>         </extension>         <strength value="required"/>         <description value="The lifecycle status of an artifact."/>         <valueSet value="http://hl7.org/fhir/ValueSet/publication-status|6.0.0-ballot3"/>       </binding>       <mapping>         <identity value="w5"/>         <map value="FiveWs.status"/>       </mapping>     </element>     <element id="CodeSystem.experimental">      <path value="CodeSystem.experimental"/>       <short value="For testing only - never for real usage"/>       <definition value="A Boolean value to indicate that this code system is authored for testing purposes

       (or education/evaluation/marketing) and no version of this resource will ever be
       intended for genuine usage."/> 
      <comment value="Allows filtering of code systems that are appropriate for use versus not.. Experimental

       resources might include example instances in implementation guides, instances created
       solely for testing purposes, etc. If experimental is 'true' for any version of
       a resource, it should be true for all versions of the resource.  (If experimental
       changes, then it is being misused or a resource that was never intended for real-world
       use has unexpectedly changed its purpose.).
Experimental resources are not expected to be stable and may well have breaking
       changes without a corresponding change to the 'version' element."/> 
      <requirements value="Enables experimental content to be developed following the same lifecycle that

       would be used for a production-level code system."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="boolean"/>       </type>       <meaningWhenMissing value="If absent, this resource is treated as though it is not experimental."/>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.class"/>       </mapping>     </element>     <element id="CodeSystem.date">      <path value="CodeSystem.date"/>       <short value="Date last changed"/>       <definition value="The date  (and optionally time) when the code system was last significantly changed.

       The date must change when the business version changes and it must change if the
       status code changes. In addition, it should change when the substantive content
       of the code system changes."/> 
      <comment value="The date is often not tracked until the resource is published, but may be present

       on draft content. Note that this is not the same as the resource last-modified-date,
       since the resource may be a secondary representation of the code system. Additional
       specific dates may be added as extensions or be found by consulting Provenances
       associated with past versions of the resource.
See guidance around (not) making local changes to elements [here](canonicalresource.html#loca
      lization)."/> 
      <alias value="Revision Date"/>       <min value="0"/>       <max value="1"/>       <type>         <code value="dateTime"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.recorded"/>       </mapping>     </element>     <element id="CodeSystem.publisher">      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.publisher"/>       <short value="Name of the publisher/steward (organization or individual)"/>       <definition value="The name of the organization or individual responsible for the release and ongoing

       maintenance of the code system."/> 
      <comment value="Usually an organization but may be an individual. The publisher (or steward) of

       the code system is the organization or individual primarily responsible for the
       maintenance and upkeep of the code system. This is not necessarily the same individual
       or organization that developed and initially authored the content. The publisher
       is the primary point of contact for questions or issues with the code system. This
       item SHOULD be populated unless the information is available from context."/> 
      <requirements value="Helps establish the &quot;authority/credibility&quot; of the code system.  May

       also allow for contact."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="string"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.witness"/>       </mapping>     </element>     <element id="CodeSystem.contact">      <path value="CodeSystem.contact"/>       <short value="Contact details for the publisher"/>       <definition value="Contact details to assist a user in finding and communicating with the publisher."/>       <comment value="May be a web site, an email address, a telephone number, etc.
See guidance around (not) making local changes to elements [here](canonicalresource.html#loca
      lization)."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="ContactDetail"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.description">      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.description"/>       <short value="Natural language description of the code system"/>       <definition value="A free text natural language description of the code system from a consumer's perspective."/>       <comment value="This description can be used to capture details such as comments about misuse,

       instructions for clinical use and interpretation, literature references, examples
       from the paper world, etc. It is not a rendering of the code system as conveyed
       in the 'text' field of the resource itself. This item SHOULD be populated unless
       the information is available from context (e.g. the language of the code system
       is presumed to be the predominant language in the place the code system was created)."/> 
      <alias value="Scope"/>       <alias value="Purpose"/>       <min value="0"/>       <max value="1"/>       <type>         <code value="markdown"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="rim"/>         <map value="N/A"/>       </mapping>     </element>     <element id="CodeSystem.useContext">      <path value="CodeSystem.useContext"/>       <short value="The context that the content is intended to support"/>       <definition value="The content was developed with a focus and intent of supporting the contexts that

       are listed. These contexts may be general categories (gender, age, ...) or may
       be references to specific programs (insurance plans, studies, ...) and may be used
       to assist with indexing and searching for appropriate code system instances."/> 
      <comment value="When multiple useContexts are specified, there is no expectation that all or any

       of the contexts apply."/> 
      <requirements value="Assist in searching for appropriate content."/>       <min value="0"/>       <max value="*"/>       <type>         <code value="UsageContext"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.jurisdiction">      <path value="CodeSystem.jurisdiction"/>       <short value="Jurisdiction of the authority that maintains the code system (if applicable)"/>       <definition value="A legal or geographic region in which the authority that maintains the resource

       is operating.  In general, the jurisdiction is also found in the useContext.  The
       useContext may reference additional jurisdictions because the defining jurisdiction
       does not necessarily limit the jurisdictions of use."/> 
      <comment value="It may be possible for the code system to be used in jurisdictions other than those

       for which it was originally designed or intended.
DEPRECATION NOTE: For consistency, implementations are encouraged to migrate to
       using the new 'jurisdiction' code in the useContext element.  (I.e. useContext.code
       indicating http://terminology.hl7.org/CodeSystem/usage-context-type#jurisdiction
       and useContext.valueCodeableConcept indicating the jurisdiction.)"/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="CodeableConcept"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="Jurisdiction"/>         </extension>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">          <valueBoolean value="true"/>         </extension>         <strength value="extensible"/>         <description value="Countries and regions within which this artifact is targeted for use."/>         <valueSet value="http://terminology.hl7.org/ValueSet/jurisdiction"/>       </binding>     </element>     <element id="CodeSystem.purpose">      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.purpose"/>       <short value="Why this code system is defined"/>       <definition value="Explanation of why this code system is needed and why it has been designed as it

       has."/> 
      <comment value="This element does not describe the usage of the code system. Instead, it provides

       traceability of ''why'' the resource is either needed or ''why'' it is defined
       as it is.  This may be used to point to source materials or specifications that
       drove the structure of this code system."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="markdown"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="w5"/>         <map value="FiveWs.why[x]"/>       </mapping>       <mapping>         <identity value="objimpl"/>         <map value="no-gen-base"/>       </mapping>     </element>     <element id="CodeSystem.copyright">      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.copyright"/>       <short value="Notice about intellectual property ownership, can include restrictions on use"/>       <definition value="A copyright statement relating to the code system and/or its contents. Copyright

       statements are notices of intellectual property ownership and can include restrictions
       on the use and publishing of the code system."/> 
      <comment value="... Sometimes, the copyright differs between the code system and the codes that

       are included. The copyright statement should clearly differentiate between these
       when required."/> 
      <requirements value="Consumers must be able to determine any legal restrictions on the use of the code

       system and/or its content."/> 
      <alias value="License"/>       <alias value="Restrictions"/>       <min value="0"/>       <max value="1"/>       <type>         <code value="markdown"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="objimpl"/>         <map value="no-gen-base"/>       </mapping>     </element>     <element id="CodeSystem.copyrightLabel">      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.copyrightLabel"/>       <short value="Copyright holder and year(s)"/>       <definition value="A short string (&lt;50 characters), suitable for inclusion in a page footer that

       identifies the copyright holder, effective period, and optionally whether rights
       are restricted. (e.g. 'All rights reserved', 'Some rights reserved')."/> 
      <comment value="The copyright symbol and the '(c)' textual representation SHOULD NOT be included

       in this string. It will be added by software when rendering the notation. Full
       details about licensing, restrictions, warrantees, etc. goes in the more general
       'copyright' element."/> 
      <requirements value="Defines the content expected to be rendered in all representations of the artifact."/>       <min value="0"/>       <max value="1"/>       <type>         <code value="string"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.approvalDate">      <path value="CodeSystem.approvalDate"/>       <short value="When the CodeSystem was approved by publisher"/>       <definition value="The date on which the resource content was approved by the publisher. Approval

       happens once when the content is officially approved for usage."/> 
      <comment value="The 'date' element may be more recent than the approval date because of minor changes

       or editorial corrections.
See guidance around (not) making local changes to elements [here](canonicalresource.html#loca
      lization)."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="date"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="objimpl"/>         <map value="no-gen-base"/>       </mapping>     </element>     <element id="CodeSystem.lastReviewDate">      <path value="CodeSystem.lastReviewDate"/>       <short value="When the CodeSystem was last reviewed by the publisher"/>       <definition value="The date on which the resource content was last reviewed. Review happens periodically

       after approval but does not change the original approval date."/> 
      <comment value="If specified, this date follows the original approval date.
See guidance around (not) making local changes to elements [here](canonicalresource.html#loca
      lization)."/> 
      <requirements value="Gives a sense of how &quot;current&quot; the content is.  Resources that have not

       been reviewed in a long time may have a risk of being less appropriate/relevant."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="date"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <mapping>         <identity value="objimpl"/>         <map value="no-gen-base"/>       </mapping>     </element>     <element id="CodeSystem.effectivePeriod">      <path value="CodeSystem.effectivePeriod"/>       <short value="When the CodeSystem is expected to be used"/>       <definition value="The period during which the CodeSystem content was or is planned to be in active

       use."/> 
      <comment value="The effective period for a CodeSystem  determines when the content is applicable

       for usage and is independent of publication and review dates. For example, a system
       intended to be used for the year 2016 might be published in 2015.
See guidance around (not) making local changes to elements [here](canonicalresource.html#loca
      lization)."/> 
      <requirements value="Allows establishing a transition before a resource comes into effect and also allows

       for a sunsetting  process when new versions of the CodeSystem are or are expected
       to be used instead."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="Period"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <mapping>         <identity value="objimpl"/>         <map value="no-gen-base"/>       </mapping>     </element>     <element id="CodeSystem.topic">      <path value="CodeSystem.topic"/>       <short value="E.g. Education, Treatment, Assessment, etc"/>       <definition value="Descriptions related to the content of the CodeSystem. Topics provide a high-level

       categorization as well as keywords for the CodeSystem that can be useful for filtering
       and searching."/> 
      <comment value="DEPRECATION NOTE: For consistency, implementations are encouraged to migrate to

       using the new 'topic' code in the useContext element.  (I.e. useContext.code indicating
       http://terminology.hl7.org/CodeSystem/usage-context-type#topic and useContext.valueCodeableCo
      ncept indicating the topic)"/> 
      <requirements value="Repositories must be able to determine how to categorize the CodeSystem so that

       it can be found by topical and keyword searches."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="CodeableConcept"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="DefinitionTopic"/>         </extension>         <strength value="example"/>         <valueSet value="http://hl7.org/fhir/ValueSet/definition-topic"/>       </binding>     </element>     <element id="CodeSystem.author">      <path value="CodeSystem.author"/>       <short value="Who authored the CodeSystem"/>       <definition value="An individiual or organization primarily involved in the creation and maintenance

       of the CodeSystem."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="ContactDetail"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.editor">      <path value="CodeSystem.editor"/>       <short value="Who edited the CodeSystem"/>       <definition value="An individual or organization primarily responsible for internal coherence of the

       CodeSystem."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="ContactDetail"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.reviewer">      <path value="CodeSystem.reviewer"/>       <short value="Who reviewed the CodeSystem"/>       <definition value="An individual or organization asserted by the publisher to be primarily responsible

       for review of some aspect of the CodeSystem."/> 
      <comment value="See guidance around (not) making local changes to elements [here](canonicalresource.html#loca

      lization)."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="ContactDetail"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.endorser">      <path value="CodeSystem.endorser"/>       <short value="Who endorsed the CodeSystem"/>       <definition value="An individual or organization asserted by the publisher to be responsible for officially

       endorsing the CodeSystem for use in some setting."/> 
      <comment value="See guidance around (not) making local changes to elements [here](canonicalresource.html#loca

      lization)."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="ContactDetail"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.relatedArtifact">      <path value="CodeSystem.relatedArtifact"/>       <short value="Additional documentation, citations, etc"/>       <definition value="Related artifacts such as additional documentation, justification, dependencies,

       bibliographic references, and predecessor and successor artifacts. If the type
       is `successor` or `predecessor`, the related resource must be a CodeSystem."/> 
      <comment value="Each related artifact is either an attachment, or a reference to another resource,

       but not both."/> 
      <requirements value="A CodeSystem must be able to provide enough information for consumers of the content

       (and/or interventions or results produced by the content) to be able to determine
       and understand the justification for and evidence in support of the content."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="RelatedArtifact"/>       </type>       <constraint>         <key value="csd-8"/>         <severity value="error"/>         <human value="Related artifact can't be depends-on or composed-of"/>         <expression value="(type in ('depends-on' | 'composed-of')).not()"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.caseSensitive">      <path value="CodeSystem.caseSensitive"/>       <short value="If code comparison is case sensitive"/>       <definition value="If code comparison is case sensitive when codes within this system are compared

       to each other."/> 
      <comment value="If this value is missing, then it is not specified whether a code system is case

       sensitive or not. When case sensitivity is not known, systems SHOULD produce codes
       with the correct case, and treat codes as case-sensitive, since this will mean
       any incorrect interpretation of codes is not a silent failure. This element is
       primarily provided to support validation software.  Case-insensitive comparisons
       do not take locale into account, and will result in unsatisfactory results for
       certain locales. Character case definitions and conversions are out of scope for
       the FHIR standard, and the results of such operations are implementation dependent."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="boolean"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.valueSet">      <path value="CodeSystem.valueSet"/>       <short value="Canonical reference to the value set with entire code system"/>       <definition value="Canonical reference to the value set that contains all codes in the code system

       independent of code status."/> 
      <comment value="The definition of the value set SHALL include all codes from this code system,

       independent of concept status, and only codes from this code system. It SHALL be
       immutable, and operations SHOULD support validation of any allowed code compositions."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="canonical"/>         <targetProfile value="http://hl7.org/fhir/StructureDefinition/ValueSet"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.hierarchyMeaning">      <path value="CodeSystem.hierarchyMeaning"/>       <short value="grouped-by | is-a | part-of | classified-with"/>       <definition value="The meaning of the hierarchy of concepts as represented in this resource."/>       <comment value="Note that other representations might have a different hierarchy or none at all,

       and represent the information using properties."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="code"/>       </type>       <condition value="csd-2"/>       <condition value="csd-3"/>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="CodeSystemHierarchyMeaning"/>         </extension>         <strength value="required"/>         <description value="The meaning of the hierarchy of concepts in a code system."/>         <valueSet value="http://hl7.org/fhir/ValueSet/codesystem-hierarchy-meaning|6.0.0-ballot3"/>       </binding>     </element>     <element id="CodeSystem.compositional">      <path value="CodeSystem.compositional"/>       <short value="If code system defines a compositional grammar"/>       <definition value="The code system defines a compositional (post-coordination) grammar."/>       <comment value="Note that the code system resource does not define what the compositional grammar

       is, only whether or not there is one. Note that the code system resource does not
       define what the compositional grammar is, only whether or not there is one. Review
       the Using Code System X with HL7 Standards (where Code System X is a specific code
       system) pages at [terminology.hl7.org](https://terminology.hl7.org/external_terminologies.htm
      l) to learn about a code system's post coordination support. [Coding.code](datatypes-definitio
      ns.html#Coding.code) has some more information about how a post coordinated expression
       may be exchanged in a code element."/> 
      <alias value="grammar"/>       <min value="0"/>       <max value="1"/>       <type>         <code value="boolean"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.versionNeeded">      <path value="CodeSystem.versionNeeded"/>       <short value="If definitions are not stable"/> 
      <definition value="This flag is used to signify that the code system does not commit to concept permanence
       across versions. If true, a version must be specified when referencing this code system.
      Best practice is that code systems do not redefine concepts, or that if concepts are redefined,
       a new code system definition is created. But this is not always possible, so some code
       systems may be defined as 'versionNeeded'.

Most code systems occasionally refine the displays defined for concepts between versions.
       Contexts in which the concept display values are validated may require that the version
       be specified for some code systems irrespective of the value of this property.
      
      
      
        
      
      
    
    
      
      
      The extent of the content of the code system (the concepts and codes it defines) are represented
       in this resource instance.
      
      
      
        
      
      
      
        
          
        
        
        The extent of the content of the code system (the concepts and codes it defines) are represented
         in a code system resource.
        
      
    
    
      
      
      The canonical URL of the code system that this code system supplement is adding designations
       and properties to.
      
      
      
      
        
        
      
      
    
    
      
      
      The total number of concepts defined by the code system. Where the code system has a compositional
       grammar, the basis of this count is defined by the system steward.
      The count of concepts defined in this resource cannot be more than this value but may
       be less for several reasons - see the content element.
      
      
      
        
      
      
    
    
      
      
      A filter that can be used in a value set compose statement when selecting concepts using
       a filter.
      Note that filters defined in code systems usually require custom code on the part of any
       terminology engine that will make them available for use in value set filters. For this
       reason, they are generally only seen in high value published terminologies.
      
      
      
        
      
      
    
    
      
      
      The code that identifies this filter when it is used as a filter in [ValueSet](valueset.html#).compo
      se.include.filter.
      
      
      
        
      
      
    
    
      
      
      
      
      
      
        
      
      
    
    
      
      
      
      
      
      
        
      
      
      
        
          
        
        
        
        
      
    
    
      
      
      
      
      
      
        
      
      
    
    
      
        
      
      
      
      A property defines an additional slot through which additional information can be provided
       about a concept.
      
      
      
        
      
      
    
    
      
      
      A code that is used to identify the property. The code is used internally (in CodeSystem.concept.pro
      perty.code) and also externally, such as in property filters.
      
      
      
        
      
      
    
    
      
      
      Reference to the formal meaning of the property. One possible source of meaning is the
       [Concept Properties](codesystem-concept-properties.html) code system.
      
      
      
        
      
      
    
    
      
      
      
      
      
      
        
      
      
    
    
      
      
      The type of the property value. Properties of type &quot;code&quot; contain a code defined
       by the code system (e.g. a reference to another defined concept).
      
      
      
        
      
      
      
        
          
        
        
        
        
      
    
    
      
        
      
      
      

       across versions. If true, a version must be specified when referencing this code
       system."/> 
      <comment value="Best practice is that code systems do not redefine concepts, or that if concepts

       are redefined, a new code system definition is created. But this is not always
       possible, so some code systems may be defined as 'versionNeeded'.
Most code systems occasionally refine the displays defined for concepts between
       versions. Contexts in which the concept display values are validated may require
       that the version be specified for some code systems irrespective of the value of
       this property."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="boolean"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.content">      <path value="CodeSystem.content"/>       <short value="not-present | example | fragment | complete | supplement"/>       <definition value="The extent of the content of the code system (the concepts and codes it defines)

       are represented in this resource instance."/> 
      <min value="1"/>       <max value="1"/>       <type>         <code value="code"/>       </type>       <condition value="csd-4"/>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="CodeSystemContentMode"/>         </extension>         <strength value="required"/>         <description value="The extent of the content of the code system (the concepts and codes it defines)

         are represented in a code system resource."/> 
        <valueSet value="http://hl7.org/fhir/ValueSet/codesystem-content-mode|6.0.0-ballot3"/>       </binding>     </element>     <element id="CodeSystem.supplements">      <path value="CodeSystem.supplements"/>       <short value="Canonical URL of Code System this adds designations and properties to"/>       <definition value="The canonical URL of the code system that this code system supplement is adding

       designations and properties to."/> 
      <comment value="The most common use of a code system supplement is to add additional language support."/>       <min value="0"/>       <max value="1"/>       <type>         <code value="canonical"/>         <targetProfile value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </type>       <condition value="csd-4"/>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.count">      <path value="CodeSystem.count"/>       <short value="Total concepts in the code system"/>       <definition value="The total number of concepts defined by the code system. Where the code system

       has a compositional grammar, the basis of this count is defined by the system steward."/> 
      <comment value="The count of concepts defined in this resource cannot be more than this value but

       may be less for several reasons - see the content element."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="unsignedInt"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.filter">      <path value="CodeSystem.filter"/>       <short value="Filter that can be used in a value set"/>       <definition value="A filter that can be used in a value set compose statement when selecting concepts

       using a filter."/> 
      <comment value="Note that filters defined in code systems usually require custom code on the part

       of any terminology engine that will make them available for use in value set filters.
       For this reason, they are generally only seen in high value published terminologies."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="BackboneElement"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.filter.code">      <extension url="http://hl7.org/fhir/tools/StructureDefinition/no-binding">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.filter.code"/>       <short value="Code that identifies the filter"/>       <definition value="The code that identifies this filter when it is used as a filter in [ValueSet](valueset.html#

      ).compose.include.filter."/> 
      <min value="1"/>       <max value="1"/>       <type>         <code value="code"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.filter.description">      <path value="CodeSystem.filter.description"/>       <short value="How or why the filter is used"/>       <definition value="A description of how or why the filter is used."/>       <min value="0"/>       <max value="1"/>       <type>         <code value="string"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.filter.operator">      <path value="CodeSystem.filter.operator"/>       <short value="= | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | child-of

       | descendent-leaf | exists"/> 
      <definition value="A list of operators that can be used with the filter."/>       <min value="1"/>       <max value="*"/>       <type>         <code value="code"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="FilterOperator"/>         </extension>         <strength value="required"/>         <description value="The kind of operation to perform as a part of a property based filter."/>         <valueSet value="http://hl7.org/fhir/ValueSet/filter-operator|6.0.0-ballot3"/>       </binding>     </element>     <element id="CodeSystem.filter.value">      <path value="CodeSystem.filter.value"/>       <short value="What to use for the value"/>       <definition value="A description of what the value for the filter should be."/>       <min value="1"/>       <max value="1"/>       <type>         <code value="string"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.property">      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-explicit-type-name">        <valueString value="Property"/>       </extension>       <path value="CodeSystem.property"/>       <short value="Additional information supplied about each concept"/>       <definition value="A property defines an additional slot through which additional information can

       be provided about a concept."/> 
      <comment value="Multiple occurrences of CodeSystem.concept.property may occur for a CodeSystem.property

       where     CodeSystem.concept.property.code is the same and CodeSystem.concept.property.value
       differs. For example: multiple designations for a single concept."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="BackboneElement"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.property.code">      <extension url="http://hl7.org/fhir/tools/StructureDefinition/no-binding">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.property.code"/>       <short value="Identifies the property on the concepts, and when referred to in operations"/>       <definition value="A code that is used to identify the property. The code is used internally (in CodeSystem.conc

      ept.property.code) and also externally, such as in property filters."/> 
      <min value="1"/>       <max value="1"/>       <type>         <code value="code"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.property.uri">      <path value="CodeSystem.property.uri"/>       <short value="Formal identifier for the property"/>       <definition value="Reference to the formal meaning of the property. One possible source of meaning

       is the [Concept Properties](codesystem-concept-properties.html) code system."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="uri"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.property.description">      <path value="CodeSystem.property.description"/>       <short value="Why the property is defined, and/or what it conveys"/>       <definition value="A description of the property- why it is defined, and how its value might be used."/>       <min value="0"/>       <max value="1"/>       <type>         <code value="string"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>     </element>     <element id="CodeSystem.property.type">      <path value="CodeSystem.property.type"/>       <short value="code | Coding | string | integer | boolean | dateTime | decimal"/>       <definition value="The type of the property value. Properties of type &quot;code&quot; contain a code

       defined by the code system (e.g. a reference to another defined concept)."/> 
      <min value="1"/>       <max value="1"/>       <type>         <code value="code"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="true"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="PropertyType"/>         </extension>         <strength value="required"/>         <description value="The type of a property value."/>         <valueSet value="http://hl7.org/fhir/ValueSet/concept-property-type|6.0.0-ballot3"/>       </binding>     </element>     <element id="CodeSystem.concept">      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-explicit-type-name">        <valueString value="ConceptDefinition"/>       </extension>       <path value="CodeSystem.concept"/>       <short value="Concepts in the code system"/> 
      <definition value="Concepts that are in the code system. The concept definitions are inherently hierarchical,
       but the definitions must be consulted to determine what the meanings of the hierarchical
       relationships are.
      If this is empty, it means that the code system resource does not represent the content
       of the code system.
      
      
      
        
      
    
    
      
      
      
      
      
      
        
      
    
    
      
      
      A human readable string that is the recommended default way to present this concept to
       a user.
      
      
      
        
      
    
    
      
      
      The formal definition of the concept. The code system resource does not make formal definitions
       required, because of the prevalence of legacy systems. However, they are highly recommended,
       as without them there is no formal meaning associated with the concept.
      
      
      
        
      
    
    
      
      
      Additional representations for the concept - other languages, aliases, specialized purposes,
       used for particular purposes, etc.
      Concepts have both a ```display``` and an array of ```designation```. The display is equivalent
       to a special designation with an implied ```designation.use``` of &quot;primary code&quot;
       and a language equal to the [Resource Language](resource.html#language).

       relationships are."/> 
      <comment value="If this is empty, it means that the code system resource does not represent the

       content of the code system."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="BackboneElement"/>       </type>       <constraint>         <key value="csd-6"/>         <severity value="error"/>         <human value="If a concept identifies an alternate, there must be a reciprocal relationship"/>         <expression value="defineVariable('sc', code).property.all((code = 'alternateCode') implies defineVariable('ac',

         value).%resource.repeat(concept).where(code = %ac).exists(property.where(code =
         'alternateCode').value = %sc))"/> 
        <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.code">      <extension url="http://hl7.org/fhir/tools/StructureDefinition/no-binding">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.concept.code"/>       <short value="Code that identifies concept"/>       <definition value="A code - a text symbol - that uniquely identifies the concept within the code system."/>       <min value="1"/>       <max value="1"/>       <type>         <code value="code"/>       </type>       <condition value="csd-1"/>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.display">      <path value="CodeSystem.concept.display"/>       <short value="Text to display to the user"/>       <definition value="A human readable string that is the recommended default way to present this concept

       to a user."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="string"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.definition">      <path value="CodeSystem.concept.definition"/>       <short value="Formal definition"/>       <definition value="The formal definition of the concept. The code system resource does not make formal

       definitions required, because of the prevalence of legacy systems. However, they
       are highly recommended, as without them there is no formal meaning associated with
       the concept."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="string"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.designation">      <path value="CodeSystem.concept.designation"/>       <short value="Additional representations for the concept"/>       <definition value="Additional representations for the concept - other languages, aliases, specialized

       purposes, used for particular purposes, etc."/> 
      <comment value="Concepts have both a ```display``` and an array of ```designation```. The display

       is equivalent to a special designation with an implied ```designation.use``` of
       &quot;primary designation&quot; and a language equal to the [Resource Language](resource.html
      #language)."/> 

      <requirements value="Many concept definition systems support multiple representations, in multiple languages,
       and for multiple purposes.
      
      
      
        
      
    
    
      
      
      
      
      
      
      
        
      
      
        
          
        
        
          
        
        
          
        
        
        
        
      
    
    
      
      
      
      If no use is provided, the designation can be assumed to be suitable for general display
       to a human user.
      
      
      
        
      
      
        
          
        
        
        
        
      
    
    
      
      
      
      
      
      
        
      
    
    
      
        
      
      
      
      
      
      
      
        
      
    
    
      
      
      
      
      
      
        
      
    
    
      
      
      
      
      
      
        
      
      
        
      
      
        
      
      
        
      
      
        
      
      
        
      
      
        
      
    
    
      
      
      Defines children of a concept to produce a hierarchy of concepts. The nature of the relationships
       is variable (is-a/contains/categorizes) - see hierarchyMeaning.
      
      
      
    
  

       and for multiple purposes."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="BackboneElement"/>       </type>       <constraint>         <key value="csd-5"/>         <severity value="error"/>         <human value="Must have a value for concept.designation.use if concept.designation.additionalUse

         is present"/> 
        <expression value="additionalUse.exists() implies use.exists()"/>         <source value="http://hl7.org/fhir/StructureDefinition/CodeSystem"/>       </constraint>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.designation.language">      <path value="CodeSystem.concept.designation.language"/>       <short value="Human language of the designation"/>       <definition value="The language this designation is defined for."/>       <comment value="In the absence of a language, the resource language applies."/>       <min value="0"/>       <max value="1"/>       <type>         <code value="code"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="Language"/>         </extension>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">          <valueBoolean value="true"/>         </extension>         <strength value="required"/>         <description value="IETF language tag for a human language"/>         <valueSet value="http://hl7.org/fhir/ValueSet/all-languages|6.0.0-ballot3"/>         <additional>           <purpose value="starter"/>           <valueSet value="http://hl7.org/fhir/ValueSet/languages"/>         </additional>       </binding>     </element>     <element id="CodeSystem.concept.designation.use">      <path value="CodeSystem.concept.designation.use"/>       <short value="Details how this designation would be used"/>       <definition value="A code that details how this designation would be used."/>       <comment value="If no use is provided, the designation can be assumed to be suitable for general

       display to a human user."/> 
      <min value="0"/>       <max value="1"/>       <type>         <code value="Coding"/>       </type>       <condition value="csd-5"/>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="ConceptDesignationUse"/>         </extension>         <strength value="extensible"/>         <description value="Details of how a designation would be used."/>         <valueSet value="http://hl7.org/fhir/ValueSet/designation-use"/>       </binding>     </element>     <element id="CodeSystem.concept.designation.additionalUse">      <path value="CodeSystem.concept.designation.additionalUse"/>       <short value="Additional ways how this designation would be used"/>       <definition value="Additional codes that detail how this designation would be used, if there is more

       than one use."/> 
      <comment value="This was added rather than increasing the cardinality of .use to 0..* in order

       to maintain backward compatibility."/> 
      <min value="0"/>       <max value="*"/>       <type>         <code value="Coding"/>       </type>       <condition value="csd-5"/>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>       <binding>         <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">          <valueString value="ConceptDesignationUse"/>         </extension>         <strength value="extensible"/>         <description value="Details of how a designation would be used."/>         <valueSet value="http://hl7.org/fhir/ValueSet/designation-use"/>       </binding>     </element>     <element id="CodeSystem.concept.designation.value">      <path value="CodeSystem.concept.designation.value"/>       <short value="The text value for this designation"/>       <definition value="The text value for this designation."/>       <min value="1"/>       <max value="1"/>       <type>         <code value="string"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.property">      <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-explicit-type-name">        <valueString value="ConceptProperty"/>       </extension>       <path value="CodeSystem.concept.property"/>       <short value="Property value for the concept"/>       <definition value="A property value for this concept."/>       <min value="0"/>       <max value="*"/>       <type>         <code value="BackboneElement"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.property.code">      <extension url="http://hl7.org/fhir/tools/StructureDefinition/no-binding">        <valueBoolean value="true"/>       </extension>       <path value="CodeSystem.concept.property.code"/>       <short value="Reference to CodeSystem.property.code or a FHIR defined concept-property"/>       <definition value="A code that is a reference to CodeSystem.property.code or is a code from [http://hl7.org/fhir

      /concept-properties](codesystem.html#defined-props) in the case that there is no
       corresponding code defined in `CodeSystem.property.code`."/> 
      <min value="1"/>       <max value="1"/>       <type>         <code value="code"/>       </type>       <condition value="csd-3"/>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.property.value[x]">      <path value="CodeSystem.concept.property.value[x]"/>       <short value="Value of the property for this concept"/>       <definition value="The value of this property."/>       <min value="1"/>       <max value="1"/>       <type>         <code value="code"/>       </type>       <type>         <code value="Coding"/>       </type>       <type>         <code value="string"/>       </type>       <type>         <code value="integer"/>       </type>       <type>         <code value="boolean"/>       </type>       <type>         <code value="dateTime"/>       </type>       <type>         <code value="decimal"/>       </type>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>     <element id="CodeSystem.concept.concept">      <path value="CodeSystem.concept.concept"/>       <short value="Child Concepts (is-a/contains/categorizes)"/>       <definition value="Defines children of a concept to produce a hierarchy of concepts. The nature of

       the relationships is variable (is-a/contains/categorizes) - see hierarchyMeaning."/> 
      <min value="0"/>       <max value="*"/>       <contentReference value="#CodeSystem.concept"/>       <mustSupport value="false"/>       <isModifier value="false"/>       <isSummary value="false"/>     </element>   </differential> 


</

StructureDefinition

>



Usage note: every effort has been made to ensure that the examples are correct and useful, but they are not a normative part of the specification.