DSTU2 FHIR Release 3 (STU)

This page is part of the FHIR Specification (v1.0.2: DSTU (v3.0.2: STU 2). 3). The current version which supercedes this version is 5.0.0 . For a full list of available versions, see the Directory of published versions . Page versions: R5 R4B R4 R3 R2 R3 R2

Identifier.profile.xml

Modeling and Methodology Work Group Maturity Level : N/A Ballot Status : Informative

Raw XML ( canonical form )

StructureDefinition for Identifier 


  
  
    
    
      
        
          
            
          
          
            
          
          
            
          
          
            
          
          
            
            
              
                
              
            
          
        
        
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<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="Identifier"/> 
  <text> 
    <status value="generated"/> 
    <div xmlns="http://www.w3.org/1999/xhtml">
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          <th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;
           padding:0px 4px 0px 4px">
            <a href="formats.html#table" title="The logical name of the element">Name</a> 
          </th> 
          <th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">
            <a href="formats.html#table" title="Information about the use of the element">Flags</a> 
          </th> 
          <th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">
            <a href="formats.html#table" title="Minimum and Maximum # of times the the element can appear in the instance">Card.</a> 
          </th> 
          <th class="hierarchy" style="width: 100px">
            <a href="formats.html#table" title="Reference to the type of the element">Type</a> 
          </th> 
          <th class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">
            <a href="formats.html#table" title="Additional information about the element">Description &amp; Constraints</a> 
            <span style="float: right">
              <a href="formats.html#table" title="Legend for this format">
                <img alt="doco" src="help16.png" style="background-color: inherit"/> 
              </a> 
            </span> 
          </th> 
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            FEhIdcAYJdYASFRUQhQkLCwkOFwcdEBAXhVabE52ecDahKy0oIQA7" style="background-color: white; background-color: inherit" title="Element"/>  
            <a href="datatypes-definitions.html#Identifier" title="Identifier : A technical identifier - identifies some entity uniquely and unambiguously.">Identifier</a> 
            <a name="Identifier"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

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

           padding:0px 4px 0px 4px">
            <a href="element.html">Element</a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">An identifier intended for computation
            <br/>  Elements defined in Ancestors: 
            <a href="element.html#Element" title="unique id for the element within a resource (for internal references). This may be any

             string value that does not contain spaces.">id</a> , 
            <a href="element.html#Element" title="May be used to represent additional information that is not part of the basic definition

             of the element. In order 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.">extension</a> 
          </td> 
        </tr> 

        
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          usual | official | temp | secondary (If known)
            
             (
            To be conformant, instances of this element SHALL include a code from the specified value
             set.)
          
        

            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>  
            <a href="datatypes-definitions.html#Identifier.use" title="Identifier.use : The purpose of this identifier.">use</a> 
            <a name="Identifier.use"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is a modifier element">?!</span> 
            <span style="padding: 3px" title="This element is included in summaries">Σ</span> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : 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 : 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 : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">usual | official | temp | secondary (If known)
            <br/>  
            <a href="valueset-identifier-use.html" title="Identifies the purpose for this identifier, if known .">IdentifierUse</a>  (
            <a href="terminologies.html#required" title="To be conformant, the concept in this element SHALL be from the specified value set">Required</a> )
          </td> 
        </tr> 

        
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            Identifier.type : A coded type for the identifier that can be used to determine which
             identifier to use for a specific purpose.
            
          
          
            
          
          
          
            
          
          Description of identifier
            
            A coded type for an identifier that can be used to determine which identifier to use for
             a specific purpose. (
            To be conformant, instances of this element SHALL include a code from the specified value
             set if any of the codes within the value set can apply to the concept being communicated.
              If the valueset does not cover the concept (based on human review), alternate codings
             (or, data type allowing, text) may be included instead.)
          
        

            FgY9loiRA4dToTYnsOxg8CBGHE6ICvEYQ4AKzkidfgoKBAA7" style="background-color: white; background-color: inherit" title="Data Type"/>  
            <a href="datatypes-definitions.html#Identifier.type" title="Identifier.type : A coded type for the identifier that can be used to determine which

             identifier to use for a specific purpose.">type</a> 
            <a name="Identifier.type"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : 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 : 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 : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">Description of identifier
            <br/>  
            <a href="valueset-identifier-type.html" title="A coded type for an identifier that can be used to determine which identifier to use for

             a specific purpose.">Identifier Type Codes</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> )
          </td> 
        </tr> 

        
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            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>  
            <a href="datatypes-definitions.html#Identifier.system" title="Identifier.system : Establishes the namespace for the value - that is, a URL that describes

             a set values that are unique.">system</a> 
            <a name="Identifier.system"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : 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 : 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 : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">The namespace for the identifier value</td> 
        </tr> 

        
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIW
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            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC 
            Identifier.value : The portion of the identifier typically displayed to the user and which
             is unique within the context of the system.
            
          
          
            
          
          
          
            
          
          
        

            8MUggvnH/EOVJjAW4AuQHJ+O75LYqikXE0LzAAALePEntTkEoSAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Primitive Data Type"/>  
            <a href="datatypes-definitions.html#Identifier.value" title="Identifier.value : The portion of the identifier typically relevant to the user and which

             is unique within the context of the system.">value</a> 
            <a name="Identifier.value"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : 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 : 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 : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">The value that is unique</td> 
        </tr> 

        
          vertical-align: top; text-align : left; background-color: white; padding:0px 4px 0px 4px;
           white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCA
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            data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB

        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
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            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            FgY9loiRA4dToTYnsOxg8CBGHE6ICvEYQ4AKzkidfgoKBAA7" style="background-color: white; background-color: inherit" title="Data Type"/>  
            <a href="datatypes-definitions.html#Identifier.period" title="Identifier.period : Time period during which identifier is/was valid for use.">period</a> 
            <a name="Identifier.period"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : 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 : 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 : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">Time period when id is/was valid for use</td> 
        </tr> 

        
          vertical-align: top; text-align : left; background-color: white; padding:0px 4px 0px 4px;
           white-space: nowrap; background-image: url(data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAyAAAAACCA
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        <tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white;">
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          AASUVORK5CYII=)">
            <img alt="." class="hierarchy" src="data: image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAAWCAYAAAABxvaqAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB
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            KlQpU3uPjAwhX2CCcGsgOAAAAAElFTkSuQmCC 
            
            
          
          
            
          
          
          
            (
            )
          
          
        

            KlQpU3uPjAwhX2CCcGsgOAAAAAElFTkSuQmCC" style="background-color: white; background-color: inherit" title="Reference to another Resource"/>  
            <a href="datatypes-definitions.html#Identifier.assigner" title="Identifier.assigner : Organization that issued/manages the identifier.">assigner</a> 
            <a name="Identifier.assigner"> </a> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">
            <span style="padding: 3px" title="This element is included in summaries">Σ</span> 
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : 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 : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">
            <a href="references.html">Reference</a> (
            <a href="organization.html">Organization</a> )
          </td> 
          <td class="hierarchy" style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid;

           padding:0px 4px 0px 4px">Organization that issued id (may be just text)</td> 
        </tr> 

        
          
            
            
               Documentation for this format
            
          
        
      
    
  
  
  
  
  
  
    
      
      
    
  
  
  
  Need to be able to identify things with confidence and be sure that the identification
   is not subject to misinterpretation.
  
  
    
    
    
  
  
    
    
    
  
  
    
    
    
  
  
  
  
  
    
      
      
      
      
      
      
        
      
      
      
        
        
      
      
        
        II - see see identifier pattern at http://wiki.hl7.org/index.php?title=Common_Design_Patterns#Identi

        <tr> 
          <td class="hierarchy" colspan="5">
            <br/>  
            <a href="formats.html#table" title="Legend for this format">
              <img alt="doco" src="help16.png" style="background-color: inherit"/>  Documentation for this format
            </a> 
          </td> 
        </tr> 
      </table> 
    </div> 
  </text> 
  <url value="http://hl7.org/fhir/StructureDefinition/Identifier"/> 
  <name value="Identifier"/> 
  <status value="draft"/> 
  <date value="2019-10-24T11:53:00+11:00"/> 
  <publisher value="HL7 FHIR Standard"/> 
  <contact> 
    <telecom> 
      <system value="url"/> 
      <value value="http://hl7.org/fhir"/> 
    </telecom> 
  </contact> 
  <description value="Base StructureDefinition for Identifier Type"/> 
  <purpose value="Need to be able to identify things with confidence and be sure that the identification
   is not subject to misinterpretation."/> 
  <fhirVersion value="3.0.2"/> 
  <mapping> 
    <identity value="v2"/> 
    <uri value="http://hl7.org/v2"/> 
    <name value="HL7 v2 Mapping"/> 
  </mapping> 
  <mapping> 
    <identity value="rim"/> 
    <uri value="http://hl7.org/v3"/> 
    <name value="RIM Mapping"/> 
  </mapping> 
  <mapping> 
    <identity value="servd"/> 
    <uri value="http://www.omg.org/spec/ServD/1.0/"/> 
    <name value="ServD"/> 
  </mapping> 
  <kind value="complex-type"/> 
  <abstract value="false"/> 
  <type value="Identifier"/> 
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Element"/> 
  <derivation value="specialization"/> 
  <snapshot> 
    <element id="Identifier">
      <path value="Identifier"/> 
      <short value="An identifier intended for computation"/> 
      <definition value="A technical identifier - identifies some entity uniquely and unambiguously."/> 
      <min value="0"/> 
      <max value="*"/> 
      <condition value="ele-1"/> 
      <constraint> 
        <key value="ele-1"/> 
        <severity value="error"/> 
        <human value="All FHIR elements must have a @value or children"/> 
        <expression value="hasValue() | (children().count() &gt; id.count())"/> 
        <xpath value="@value|f:*|h:div"/> 
        <source value="Element"/> 
      </constraint> 
      <mapping> 
        <identity value="rim"/> 
        <map value="n/a"/> 
      </mapping> 
      <mapping> 
        <identity value="v2"/> 
        <map value="CX / EI (occasionally, more often EI maps to a resource id or a URL)"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="II - see see identifier pattern at http://wiki.hl7.org/index.php?title=Common_Design_Patterns#Identi
        fier_Pattern for relevant discussion. The Identifier class is a little looser than the
         v3 type II because it allows URIs as well as registered OIDs or GUIDs.  Also maps to Role[classCode=
        IDENT]
      
      
        
        
      
    
    
      
      
      
      
      
      
      
        
      
      
        
        
      
    
    
      
      
      May be used to represent additional information that is not part of the basic definition

        IDENT]"/> 
      </mapping> 
      <mapping> 
        <identity value="servd"/> 
        <map value="Identifier"/> 
      </mapping> 
    </element> 
    <element id="Identifier.id">
      <path value="Identifier.id"/> 
      <representation value="xmlAttr"/> 
      <short value="xml:id (or equivalent in JSON)"/> 
      <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> 
      <type> 
        <code value="string"/> 
      </type> 
      <mapping> 
        <identity value="rim"/> 
        <map value="n/a"/> 
      </mapping> 
    </element> 
    <element id="Identifier.extension">
      <path value="Identifier.extension"/> 
      <slicing> 
        <discriminator> 
          <type value="value"/> 
          <path value="url"/> 
        </discriminator> 
        <description value="Extensions are always sliced by (at least) url"/> 
        <rules value="open"/> 
      </slicing> 
      <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. In order 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.
      There can be no stigma associated with the use of extensions by any application, project,

       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.
      
      
      
      
      
        
      
      
        
        
      
    
    
      
      
      
      This is labeled as &quot;Is Modifier&quot; because applications should not mistake a temporary

       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> 
      <mapping> 
        <identity value="rim"/> 
        <map value="n/a"/> 
      </mapping> 
    </element> 
    <element id="Identifier.use">
      <path value="Identifier.use"/> 
      <short value="usual | official | temp | secondary (If known)"/> 
      <definition value="The purpose of this identifier."/> 
      <comment value="This is labeled as &quot;Is Modifier&quot; because applications should not mistake a temporary
       id for a permanent one. Applications can assume that an identifier is permanent unless
       it explicitly says that it is temporary.
      Allows the appropriate identifier for a particular context of use to be selected from
       among a set of identifiers.
      
      
      
        
      
      
      
      
        
        
        
          
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      A coded type for the identifier that can be used to determine which identifier to use
       for a specific purpose.
      This element deals only with general categories of identifiers.  It SHOULD not be used

       it explicitly says that it is temporary."/> 
      <requirements value="Allows the appropriate identifier for a particular context of use to be selected from

       among a set of identifiers."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="code"/> 
      </type> 
      <isModifier value="true"/> 
      <isSummary value="true"/> 
      <binding> 
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="IdentifierUse"/> 
        </extension> 
        <strength value="required"/> 
        <description value="Identifies the purpose for this identifier, if known ."/> 
        <valueSetReference> 
          <reference value="http://hl7.org/fhir/ValueSet/identifier-use"/> 
        </valueSetReference> 
      </binding> 
      <mapping> 
        <identity value="v2"/> 
        <map value="N/A"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="Role.code or implied by context"/> 
      </mapping> 
    </element> 
    <element id="Identifier.type">
      <path value="Identifier.type"/> 
      <short value="Description of identifier"/> 
      <definition value="A coded type for the identifier that can be used to determine which identifier to use

       for a specific purpose."/> 
      <comment value="This element deals only with general categories of identifiers.  It SHOULD not be used
       for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into
       multiple categories due to common usage.   Where the system is known, a type is unnecessary
       because the type is always part of the system definition. However systems often need to
       handle identifiers where the system is not known. There is not a 1:1 relationship between
       type and system, since many different systems have the same type.
      
      
      
      
        
      
      
      
        
        A coded type for an identifier that can be used to determine which identifier to use for
         a specific purpose.
        
          
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      
      There are many sequences of identifiers.  To perform matching, we need to know what sequence
       we're dealing with. The system identifies a particular sequence or set of unique identifiers.
      
      
      
        
      
      http://www.acme.com/identifiers/patient or urn:ietf:rfc:3986 if the Identifier.value itself
       is a full uri
      
      
        
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      The portion of the identifier typically displayed to the user and which is unique within
       the context of the system.
      
      
      
      
        
      
      
      
      
        
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      
      
      
      
        
      
      
      
        
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      
      
      
      
      
        
        
      
      
      
        
        
      
      
        
        II.assigningAuthorityName but note that this is an improper use by the definition of the
         field.  Also Role.scoper
      
      
        
        
      
    
  
  
    
      
      
      
      
      
      
        
      
      
      
        
        
      
      
        
        II - see see identifier pattern at http://wiki.hl7.org/index.php?title=Common_Design_Patterns#Identi

       multiple categories due to common usage. 

Where the system is known, a type is unnecessary because the type is always part of the
       system definition. However systems often need to handle identifiers where the system is
       not known. There is not a 1:1 relationship between type and system, since many different
       systems have the same type."/> 
      <requirements value="Allows users to make use of identifiers when the identifier system is not known."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="CodeableConcept"/> 
      </type> 
      <isSummary value="true"/> 
      <binding> 
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="IdentifierType"/> 
        </extension> 
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
          <valueBoolean value="true"/> 
        </extension> 
        <strength value="extensible"/> 
        <description value="A coded type for an identifier that can be used to determine which identifier to use for

         a specific purpose."/> 
        <valueSetReference> 
          <reference value="http://hl7.org/fhir/ValueSet/identifier-type"/> 
        </valueSetReference> 
      </binding> 
      <mapping> 
        <identity value="v2"/> 
        <map value="CX.5"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="Role.code or implied by context"/> 
      </mapping> 
    </element> 
    <element id="Identifier.system">
      <path value="Identifier.system"/> 
      <short value="The namespace for the identifier value"/> 
      <definition value="Establishes the namespace for the value - that is, a URL that describes a set values that

       are unique."/> 
      <requirements value="There are many sets  of identifiers.  To perform matching of two identifiers, we need

       to know what set we're dealing with. The system identifies a particular set of unique
       identifiers."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="uri"/> 
      </type> 
      <example> 
        <label value="General"/> 
        <valueUri value="http://www.acme.com/identifiers/patient or urn:ietf:rfc:3986 if the Identifier.value itself

         is a full uri"/> 
      </example> 
      <isSummary value="true"/> 
      <mapping> 
        <identity value="v2"/> 
        <map value="CX.4 / EI-2-4"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="II.root or Role.id.root"/> 
      </mapping> 
      <mapping> 
        <identity value="servd"/> 
        <map value="./IdentifierType"/> 
      </mapping> 
    </element> 
    <element id="Identifier.value">
      <path value="Identifier.value"/> 
      <short value="The value that is unique"/> 
      <definition value="The portion of the identifier typically relevant to the user and which is unique within

       the context of the system."/> 
      <comment value="If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986.  The value's primary

       purpose is computational mapping.  As a result, it may be normalized for comparison purposes
       (e.g. removing non-significant whitespace, dashes, etc.)  A value formatted for human
       display can be conveyed using the [Rendered Value extension](extension-rendered-value.html)."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="string"/> 
      </type> 
      <example> 
        <label value="General"/> 
        <valueString value="123456"/> 
      </example> 
      <isSummary value="true"/> 
      <mapping> 
        <identity value="v2"/> 
        <map value="CX.1 / EI.1"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="II.extension or II.root if system indicates OID or GUID (Or Role.id.extension or root)"/> 
      </mapping> 
      <mapping> 
        <identity value="servd"/> 
        <map value="./Value"/> 
      </mapping> 
    </element> 
    <element id="Identifier.period">
      <path value="Identifier.period"/> 
      <short value="Time period when id is/was valid for use"/> 
      <definition value="Time period during which identifier is/was valid for use."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="Period"/> 
      </type> 
      <isSummary value="true"/> 
      <mapping> 
        <identity value="v2"/> 
        <map value="CX.7 + CX.8"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="Role.effectiveTime or implied by context"/> 
      </mapping> 
      <mapping> 
        <identity value="servd"/> 
        <map value="./StartDate and ./EndDate"/> 
      </mapping> 
    </element> 
    <element id="Identifier.assigner">
      <path value="Identifier.assigner"/> 
      <short value="Organization that issued id (may be just text)"/> 
      <definition value="Organization that issued/manages the identifier."/> 
      <comment value="The Identifier.assigner may omit the .reference element and only contain a .display element

       reflecting the name or other textual information about the assigning organization."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="Reference"/> 
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/Organization"/> 
      </type> 
      <isSummary value="true"/> 
      <mapping> 
        <identity value="v2"/> 
        <map value="CX.4 / (CX.4,CX.9,CX.10)"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="II.assigningAuthorityName but note that this is an improper use by the definition of the

         field.  Also Role.scoper"/> 
      </mapping> 
      <mapping> 
        <identity value="servd"/> 
        <map value="./IdentifierIssuingAuthority"/> 
      </mapping> 
    </element> 
  </snapshot> 
  <differential> 
    <element id="Identifier">
      <path value="Identifier"/> 
      <short value="An identifier intended for computation"/> 
      <definition value="A technical identifier - identifies some entity uniquely and unambiguously."/> 
      <min value="0"/> 
      <max value="*"/> 
      <mapping> 
        <identity value="v2"/> 
        <map value="CX / EI (occasionally, more often EI maps to a resource id or a URL)"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="II - see see identifier pattern at http://wiki.hl7.org/index.php?title=Common_Design_Patterns#Identi
        fier_Pattern for relevant discussion. The Identifier class is a little looser than the
         v3 type II because it allows URIs as well as registered OIDs or GUIDs.  Also maps to Role[classCode=
        IDENT]
      
      
        
        
      
    
    
      
      
      
      This is labeled as &quot;Is Modifier&quot; because applications should not mistake a temporary

        IDENT]"/> 
      </mapping> 
      <mapping> 
        <identity value="servd"/> 
        <map value="Identifier"/> 
      </mapping> 
    </element> 
    <element id="Identifier.use">
      <path value="Identifier.use"/> 
      <short value="usual | official | temp | secondary (If known)"/> 
      <definition value="The purpose of this identifier."/> 
      <comment value="This is labeled as &quot;Is Modifier&quot; because applications should not mistake a temporary
       id for a permanent one. Applications can assume that an identifier is permanent unless
       it explicitly says that it is temporary.
      Allows the appropriate identifier for a particular context of use to be selected from
       among a set of identifiers.
      
      
      
        
      
      
      
      
        
        
        
          
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      A coded type for the identifier that can be used to determine which identifier to use
       for a specific purpose.
      This element deals only with general categories of identifiers.  It SHOULD not be used

       it explicitly says that it is temporary."/> 
      <requirements value="Allows the appropriate identifier for a particular context of use to be selected from

       among a set of identifiers."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="code"/> 
      </type> 
      <isModifier value="true"/> 
      <isSummary value="true"/> 
      <binding> 
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="IdentifierUse"/> 
        </extension> 
        <strength value="required"/> 
        <description value="Identifies the purpose for this identifier, if known ."/> 
        <valueSetReference> 
          <reference value="http://hl7.org/fhir/ValueSet/identifier-use"/> 
        </valueSetReference> 
      </binding> 
      <mapping> 
        <identity value="v2"/> 
        <map value="N/A"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="Role.code or implied by context"/> 
      </mapping> 
    </element> 
    <element id="Identifier.type">
      <path value="Identifier.type"/> 
      <short value="Description of identifier"/> 
      <definition value="A coded type for the identifier that can be used to determine which identifier to use

       for a specific purpose."/> 
      <comment value="This element deals only with general categories of identifiers.  It SHOULD not be used
       for codes that correspond 1..1 with the Identifier.system. Some identifiers may fall into
       multiple categories due to common usage.   Where the system is known, a type is unnecessary
       because the type is always part of the system definition. However systems often need to
       handle identifiers where the system is not known. There is not a 1:1 relationship between
       type and system, since many different systems have the same type.
      
      
      
      
        
      
      
      
        
        A coded type for an identifier that can be used to determine which identifier to use for
         a specific purpose.
        
          
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      
      There are many sequences of identifiers.  To perform matching, we need to know what sequence
       we're dealing with. The system identifies a particular sequence or set of unique identifiers.
      
      
      
        
      
      http://www.acme.com/identifiers/patient or urn:ietf:rfc:3986 if the Identifier.value itself
       is a full uri
      
      
        
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      The portion of the identifier typically displayed to the user and which is unique within
       the context of the system.
      
      
      
      
        
      
      
      
      
        
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      
      
      
      
        
      
      
      
        
        
      
      
        
        
      
      
        
        
      
    
    
      
      
      
      
      
      
      
        
        
      
      
      
        
        
      
      
        
        II.assigningAuthorityName but note that this is an improper use by the definition of the
         field.  Also Role.scoper
      
      
        
        
      
    
  

       multiple categories due to common usage. 

Where the system is known, a type is unnecessary because the type is always part of the
       system definition. However systems often need to handle identifiers where the system is
       not known. There is not a 1:1 relationship between type and system, since many different
       systems have the same type."/> 
      <requirements value="Allows users to make use of identifiers when the identifier system is not known."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="CodeableConcept"/> 
      </type> 
      <isSummary value="true"/> 
      <binding> 
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
          <valueString value="IdentifierType"/> 
        </extension> 
        <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-isCommonBinding">
          <valueBoolean value="true"/> 
        </extension> 
        <strength value="extensible"/> 
        <description value="A coded type for an identifier that can be used to determine which identifier to use for

         a specific purpose."/> 
        <valueSetReference> 
          <reference value="http://hl7.org/fhir/ValueSet/identifier-type"/> 
        </valueSetReference> 
      </binding> 
      <mapping> 
        <identity value="v2"/> 
        <map value="CX.5"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="Role.code or implied by context"/> 
      </mapping> 
    </element> 
    <element id="Identifier.system">
      <path value="Identifier.system"/> 
      <short value="The namespace for the identifier value"/> 
      <definition value="Establishes the namespace for the value - that is, a URL that describes a set values that

       are unique."/> 
      <requirements value="There are many sets  of identifiers.  To perform matching of two identifiers, we need

       to know what set we're dealing with. The system identifies a particular set of unique
       identifiers."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="uri"/> 
      </type> 
      <example> 
        <label value="General"/> 
        <valueUri value="http://www.acme.com/identifiers/patient or urn:ietf:rfc:3986 if the Identifier.value itself

         is a full uri"/> 
      </example> 
      <isSummary value="true"/> 
      <mapping> 
        <identity value="v2"/> 
        <map value="CX.4 / EI-2-4"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="II.root or Role.id.root"/> 
      </mapping> 
      <mapping> 
        <identity value="servd"/> 
        <map value="./IdentifierType"/> 
      </mapping> 
    </element> 
    <element id="Identifier.value">
      <path value="Identifier.value"/> 
      <short value="The value that is unique"/> 
      <definition value="The portion of the identifier typically relevant to the user and which is unique within

       the context of the system."/> 
      <comment value="If the value is a full URI, then the system SHALL be urn:ietf:rfc:3986.  The value's primary

       purpose is computational mapping.  As a result, it may be normalized for comparison purposes
       (e.g. removing non-significant whitespace, dashes, etc.)  A value formatted for human
       display can be conveyed using the [Rendered Value extension](extension-rendered-value.html)."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="string"/> 
      </type> 
      <example> 
        <label value="General"/> 
        <valueString value="123456"/> 
      </example> 
      <isSummary value="true"/> 
      <mapping> 
        <identity value="v2"/> 
        <map value="CX.1 / EI.1"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="II.extension or II.root if system indicates OID or GUID (Or Role.id.extension or root)"/> 
      </mapping> 
      <mapping> 
        <identity value="servd"/> 
        <map value="./Value"/> 
      </mapping> 
    </element> 
    <element id="Identifier.period">
      <path value="Identifier.period"/> 
      <short value="Time period when id is/was valid for use"/> 
      <definition value="Time period during which identifier is/was valid for use."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="Period"/> 
      </type> 
      <isSummary value="true"/> 
      <mapping> 
        <identity value="v2"/> 
        <map value="CX.7 + CX.8"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="Role.effectiveTime or implied by context"/> 
      </mapping> 
      <mapping> 
        <identity value="servd"/> 
        <map value="./StartDate and ./EndDate"/> 
      </mapping> 
    </element> 
    <element id="Identifier.assigner">
      <path value="Identifier.assigner"/> 
      <short value="Organization that issued id (may be just text)"/> 
      <definition value="Organization that issued/manages the identifier."/> 
      <comment value="The Identifier.assigner may omit the .reference element and only contain a .display element

       reflecting the name or other textual information about the assigning organization."/> 
      <min value="0"/> 
      <max value="1"/> 
      <type> 
        <code value="Reference"/> 
        <targetProfile value="http://hl7.org/fhir/StructureDefinition/Organization"/> 
      </type> 
      <isSummary value="true"/> 
      <mapping> 
        <identity value="v2"/> 
        <map value="CX.4 / (CX.4,CX.9,CX.10)"/> 
      </mapping> 
      <mapping> 
        <identity value="rim"/> 
        <map value="II.assigningAuthorityName but note that this is an improper use by the definition of the

         field.  Also Role.scoper"/> 
      </mapping> 
      <mapping> 
        <identity value="servd"/> 
        <map value="./IdentifierIssuingAuthority"/> 
      </mapping> 
    </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.