This structure is derived from ShareableCodeSystem .

Summary

Mandatory: 1 element
Must-Support: 10 elements

Extensions

This structure refers to these extensions:

• http://hl7.org/fhir/StructureDefinition/codesystem-sourceReference
• http://hl7.org/fhir/StructureDefinition/codesystem-otherName

This indicates the differences between this profile and the base ShareableCodeSystem structure.

Name	Flags	Card.	Type	Description & Constraints
CodeSystem		1..1	ShareableCodeSystem	Declares the existence of and describes a code system or code system supplement
sourceReference Slices for extension		0..1		Content/Rules for all slices
sourceReference		0..1	uri	Where did this content come from URL: http://hl7.org/fhir/StructureDefinition/codesystem-sourceReference
otherName		0..*	(Complex)	Alternative names URL: http://hl7.org/fhir/StructureDefinition/codesystem-otherName
identifier	S	0 .. *	Identifier	Additional identifier for the code system (business identifier)
date	S	1..1	dateTime	Date last changed
contact	S	0 .. *	ContactDetail	Contact details for the publisher
useContext	S	0 .. *	UsageContext	The context that the content is intended to support
jurisdiction	S	0 .. *	CodeableConcept	Intended jurisdiction for code system (if applicable)
purpose	S	0 .. 1	markdown	Why this code system is defined
copyright	S	0 .. 1	markdown	Use and/or publishing restrictions
copyrightLabel	S	0 .. 1	string	Copyright holder and year(s)
approvalDate		0 .. 1	date	When the CodeSystem was approved by publisher
lastReviewDate		0 .. 1	date	When the CodeSystem was last reviewed by the publisher
effectivePeriod	S	0 .. 1	Period	When the CodeSystem is expected to be used
topic	S	0 .. *	CodeableConcept	E.g. Education, Treatment, Assessment, etc
author		0 .. *	ContactDetail	Who authored the CodeSystem
editor		0 .. *	ContactDetail	Who edited the CodeSystem
reviewer		0 .. *	ContactDetail	Who reviewed the CodeSystem
endorser		0 .. *	ContactDetail	Who endorsed the CodeSystem
relatedArtifact		0 .. *	RelatedArtifact	Additional documentation, citations, etc
Documentation for this format

This provides the consolidated view (aka snapshot) of the profile after applying the changes in this profile to the base ShareableCodeSystem structure.

Name	Flags	Card.	Type	Description & Constraints
CodeSystem	C	1..1	ShareableCodeSystem	Declares the existence of and describes a code system or code system supplement cnl-0: Name should be usable as an identifier for the module by machine processing applications such as code generation csd-1: Within a code system definition, all the codes SHALL be unique csd-2: If there is an explicit hierarchy, a hierarchyMeaning should be provided csd-3: If there is an implicit hierarchy, a hierarchyMeaning should be provided csd-4: If the code system content = supplement, it must nominate what it's a supplement for scs-1: If a codesystem contains nested concepts, it must specify hierarchyMeaning scs-2: If a codesystem contains example, fragment, or complete content, it must have at least one concept
id	Σ	0..1	id	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?! Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: All Languages ( required ): IETF language tag for a human language Additional Bindings Purpose Common Languages Starter Set
text		0..1	Narrative	Text summary of the resource, for human interpretation
contained		0..*	Resource	Contained, inline Resources
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
knowledgeRepresentationLevel	S	0..*	code	narrative | semi-structured | structured | executable URL: http://hl7.org/fhir/StructureDefinition/cqf-knowledgeRepresentationLevel Binding: Knowledge Representation Level ( required )
sourceReference		0..1	uri	Where did this content come from URL: http://hl7.org/fhir/StructureDefinition/codesystem-sourceReference
otherName		0..*	(Complex)	Alternative names URL: http://hl7.org/fhir/StructureDefinition/codesystem-otherName
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored
url	S Σ C	1..1	uri	Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system) cnl-1: URL should not contain | or # - these characters make processing canonical references problematic
identifier	S Σ	0..*	Identifier	Additional identifier for the code system (business identifier)
version	S Σ	1..1	string	Business version of the code system (Coding.version)
versionAlgorithm[x]	S Σ	0..1		How to compare versions Binding: Version Algorithm ( extensible )
versionAlgorithmString			string
versionAlgorithmCoding			Coding
name	S Σ C	0..1	string	Name for this code system (computer friendly)
title	S Σ	1..1	string	Name for this code system (human friendly)
status	?! S Σ	1..1	code	draft | active | retired | unknown Binding: PublicationStatus ( required ): The lifecycle status of an artifact.
experimental	S Σ	1..1	boolean	For testing purposes, not real usage
date	S Σ	1..1	dateTime	Date last changed
publisher	S Σ	0..1	string	Name of the publisher/steward (organization or individual)
contact	S Σ	0..*	ContactDetail	Contact details for the publisher
description	S	1..1	markdown	Natural language description of the code system
useContext	S Σ	0..*	UsageContext	The context that the content is intended to support
jurisdiction	S Σ	0..*	CodeableConcept	Intended jurisdiction for code system (if applicable) Binding: Jurisdiction ValueSet ( extensible ): Countries and regions within which this artifact is targeted for use.
purpose	S	0..1	markdown	Why this code system is defined
copyright	S	0..1	markdown	Use and/or publishing restrictions
copyrightLabel	S	0..1	string	Copyright holder and year(s)
approvalDate		0..1	date	When the CodeSystem was approved by publisher
lastReviewDate		0..1	date	When the CodeSystem was last reviewed by the publisher
effectivePeriod	S Σ	0..1	Period	When the CodeSystem is expected to be used
topic	S	0..*	CodeableConcept	E.g. Education, Treatment, Assessment, etc Binding: Definition Topic ( example )
author		0..*	ContactDetail	Who authored the CodeSystem
editor		0..*	ContactDetail	Who edited the CodeSystem
reviewer		0..*	ContactDetail	Who reviewed the CodeSystem
endorser		0..*	ContactDetail	Who endorsed the CodeSystem
relatedArtifact		0..*	RelatedArtifact	Additional documentation, citations, etc
caseSensitive	S Σ	1..1	boolean	If code comparison is case sensitive
valueSet	Σ	0..1	canonical ( ValueSet )	Canonical reference to the value set with entire code system
hierarchyMeaning	S Σ C	0..1	code	grouped-by | is-a | part-of | classified-with Binding: Code System Hierarchy Meaning ( required ): The meaning of the hierarchy of concepts in a code system.
compositional	Σ	0..1	boolean	If code system defines a compositional grammar
versionNeeded	Σ	0..1	boolean	If definitions are not stable
content	S Σ C	1..1	code	not-present | example | fragment | complete | supplement Binding: Code System Content Mode ( required ): The extent of the content of the code system (the concepts and codes it defines) are represented in a code system resource.
supplements	Σ C TU	0..1	canonical ( CodeSystem )	Canonical URL of Code System this adds designations and properties to
count	Σ	0..1	unsignedInt	Total concepts in the code system
filter	Σ	0..*	BackboneElement	Filter that can be used in a value set
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	code	Code that identifies the filter
description	Σ	0..1	string	How or why the filter is used
operator	Σ	1..*	code	= | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | child-of | descendent-leaf | exists Binding: Filter Operator ( required ): The kind of operation to perform as a part of a property based filter.
value	Σ	1..1	string	What to use for the value
property	Σ	0..*	BackboneElement	Additional information supplied about each concept
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	code	Identifies the property on the concepts, and when referred to in operations
uri	Σ	0..1	uri	Formal identifier for the property
description	Σ	0..1	string	Why the property is defined, and/or what it conveys
type	Σ	1..1	code	code | Coding | string | integer | boolean | dateTime | decimal Binding: Property Type ( required ): The type of a property value.
concept	S C	0..*	BackboneElement	Concepts in the code system
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	S C	1..1	code	Code that identifies concept
display	S	0..1	string	Text to display to the user
definition	S	0..1	string	Formal definition
designation	C	0..*	BackboneElement	Additional representations for the concept csd-5: Must have a value for concept.designation.use if concept.designation.additionalUse is present
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
language		0..1	code	Human language of the designation Binding: All Languages ( required ): IETF language tag for a human language Additional Bindings Purpose Common Languages Starter Set
use	C	0..1	Coding	Details how this designation would be used Binding: Designation Use ( extensible ): Details of how a designation would be used.
additionalUse	C TU	0..*	Coding	Additional ways how this designation would be used Binding: Designation Use ( extensible ): Details of how a designation would be used.
value		1..1	string	The text value for this designation
property		0..*	BackboneElement	Property value for the concept
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	C	1..1	code	Reference to CodeSystem.property.code
value[x]		1..1		Value of the property for this concept
valueCode			code
valueCoding			Coding
valueString			string
valueInteger			integer
valueBoolean			boolean
valueDateTime			dateTime
valueDecimal			decimal
concept	S C	0..*	See concept (CodeSystem)	Child Concepts (is-a/contains/categorizes)
Documentation for this format

<!-- PublishableCodeSystem -->

<CodeSystem xmlns="http://hl7.org/fhir"
>
  <!-- from Element: extension -->
 <id value="[id]"/><!-- 0..1 Logical id of this artifact -->
 <meta><!-- I 0..1 Meta Metadata about the resource --></meta>
 <implicitRules value="[uri]"/><!-- I 0..1 A set of rules under which this content was created -->
 <language value="[code]"/><!-- I 0..1 Language of the resource content   -->
 <text><!-- I 0..1 Narrative 
     Text summary of the resource, for human interpretation --></text>
 <contained><!-- 0..* Resource Contained, inline Resources --></contained>
 <<a href="publishablecodesystem-definitions.html#CodeSystem.modifierExtension" 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 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) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>

 <modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored  --></modifierExtension>

 <url value="[uri]"/><!-- I 1..1 
     Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system) -->
 <identifier><!-- I 0..* Identifier 
     Additional identifier for the code system (business identifier) --></identifier>
 <version value="[string]"/><!-- I 1..1 Business version of the code system (Coding.version) -->
 <versionAlgorithm[x]><!-- I 0..1 string|Coding How to compare versions   --></versionAlgorithm[x]>
 <name value="[string]"/><!-- I 0..1 Name for this code system (computer friendly) -->
 <title value="[string]"/><!-- I 1..1 Name for this code system (human friendly) -->
 <status value="[code]"/><!-- I 1..1 draft | active | retired | unknown   -->
 <experimental value="[boolean]"/><!-- I 1..1 For testing purposes, not real usage -->
 <date value="[dateTime]"/><!-- I 1..1 Date last changed -->
 <publisher value="[string]"/><!-- I 0..1 Name of the publisher/steward (organization or individual) -->
 <contact><!-- I 0..* ContactDetail Contact details for the publisher --></contact>
 <description value="[markdown]"/><!-- I 1..1 Natural language description of the code system -->
 <useContext><!-- I 0..* UsageContext 
     The context that the content is intended to support --></useContext>
 <jurisdiction><!-- I 0..* CodeableConcept Intended jurisdiction for code system (if applicable)   --></jurisdiction>
 <purpose value="[markdown]"/><!-- I 0..1 Why this code system is defined -->
 <copyright value="[markdown]"/><!-- I 0..1 Use and/or publishing restrictions -->
 <copyrightLabel value="[string]"/><!-- I 0..1 Copyright holder and year(s) -->
 <approvalDate value="[date]"/><!-- I 0..1 When the CodeSystem was approved by publisher -->
 <lastReviewDate value="[date]"/><!-- I 0..1 When the CodeSystem was last reviewed by the publisher -->
 <effectivePeriod><!-- I 0..1 Period 
     When the CodeSystem is expected to be used --></effectivePeriod>
 <topic><!-- I 0..* CodeableConcept E.g. Education, Treatment, Assessment, etc   --></topic>
 <author><!-- I 0..* ContactDetail Who authored the CodeSystem --></author>
 <editor><!-- I 0..* ContactDetail Who edited the CodeSystem --></editor>
 <reviewer><!-- I 0..* ContactDetail Who reviewed the CodeSystem --></reviewer>
 <endorser><!-- I 0..* ContactDetail Who endorsed the CodeSystem --></endorser>
 <relatedArtifact><!-- I 0..* RelatedArtifact 
     Additional documentation, citations, etc --></relatedArtifact>
 <caseSensitive value="[boolean]"/><!-- I 1..1 If code comparison is case sensitive -->
 <valueSet value="[canonical]"/><!-- I 0..1 Canonical reference to the value set with entire code system -->
 <hierarchyMeaning value="[code]"/><!-- I 0..1 grouped-by | is-a | part-of | classified-with   -->
 <compositional value="[boolean]"/><!-- I 0..1 If code system defines a compositional grammar -->
 <versionNeeded value="[boolean]"/><!-- I 0..1 If definitions are not stable -->
 <content value="[code]"/><!-- I 1..1 not-present | example | fragment | complete | supplement   -->
 <supplements value="[canonical]"/><!-- I 0..1 Canonical URL of Code System this adds designations and properties to -->
 <count value="[unsignedInt]"/><!-- I 0..1 Total concepts in the code system -->
 <filter> I 0..* BackboneElement  <!-- I 0..* Filter that can be used in a value set -->
  <<a href="publishablecodesystem-definitions.html#CodeSystem.filter.modifierExtension" title="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 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) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>

  <modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>

  <code value="[code]"/><!-- I 1..1 Code that identifies the filter -->
  <description value="[string]"/><!-- I 0..1 How or why the filter is used -->
  <operator value="[code]"/><!-- I 1..* = | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | child-of | descendent-leaf | exists   -->
  <value value="[string]"/><!-- I 1..1 What to use for the value -->
 </filter>
 <property> I 0..* BackboneElement  <!-- I 0..* Additional information supplied about each concept -->
  <<a href="publishablecodesystem-definitions.html#CodeSystem.property.modifierExtension" title="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 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) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>

  <modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>

  <code value="[code]"/><!-- I 1..1 
      Identifies the property on the concepts, and when referred to in operations -->
  <uri value="[uri]"/><!-- I 0..1 Formal identifier for the property -->
  <description value="[string]"/><!-- I 0..1 Why the property is defined, and/or what it conveys -->
  <type value="[code]"/><!-- I 1..1 code | Coding | string | integer | boolean | dateTime | decimal   -->
 </property>
 <concept> I 0..* BackboneElement  <!-- I 0..* Concepts in the code system -->
  <<a href="publishablecodesystem-definitions.html#CodeSystem.concept.modifierExtension" title="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 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) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>

  <modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>

  <code value="[code]"/><!-- I 1..1 Code that identifies concept -->
  <display value="[string]"/><!-- I 0..1 Text to display to the user -->
  <definition value="[string]"/><!-- I 0..1 Formal definition -->
  <designation> I 0..* BackboneElement  <!-- I 0..* Additional representations for the concept -->
   <<a href="publishablecodesystem-definitions.html#CodeSystem.concept.designation.modifierExtension" title="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 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) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>

   <modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>

   <language value="[code]"/><!-- I 0..1 Human language of the designation   -->
   <use><!-- I 0..1 Coding Details how this designation would be used   --></use>
   <additionalUse><!-- I 0..* Coding Additional ways how this designation would be used   --></additionalUse>
   <value value="[string]"/><!-- I 1..1 The text value for this designation -->
  </designation>
  <property> I 0..* BackboneElement  <!-- I 0..* Property value for the concept -->
   <<a href="publishablecodesystem-definitions.html#CodeSystem.concept.property.modifierExtension" title="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 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) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>

   <modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>

   <code value="[code]"/><!-- I 1..1 Reference to CodeSystem.property.code -->
   <value[x]><!-- I 1..1 code|Coding|string|integer|
     boolean|dateTime|decimal 
       Value of the property for this concept --></value[x]>
  </property>
  <concept><!-- See http://hl7.org/fhir/StructureDefinition/CodeSystem#CodeSystem.concept  Child Concepts (is-a/contains/categorizes) --></concept>
 </concept>
</CodeSystem>

{ // PublishableCodeSystem
  // from Element: extension
    "meta" : { Meta }, // IMetadata about the resource
    "implicitRules" : "<uri>", // IA set of rules under which this content was created
    "language" : "<code>", // ILanguage of the resource content
    "text" : { Narrative }, // IText summary of the resource, for human interpretation
    "contained" : [{ Resource }], //Contained, inline Resources
    "extension" : [ //  sliced by value:url  in the specified order, Open 
      { // narrative | semi-structured | structured | executable // I
        // from Element: extension
      },
      { // 

      { // Where did this content come from // I

        // from Element: extension
      },
      { // 

      { // Alternative names // I

        // from Element: extension
      }
    ],
    "<a href="publishablecodesystem-definitions.html#CodeSystem.modifierExtension" 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 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) (this element modifies the meaning of other elements)" class="dict">

    "modifierExtension" : [{ Extension }], // IExtensions that cannot be ignored

    "url" : "<uri>", // I R! Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system)
    "identifier" : [{ Identifier }], // IAdditional identifier for the code system (business identifier)
    "version" : "<string>", // I R! Business version of the code system (Coding.version)
  // value[x]: How to compare versions. One of these 2:
    "versionAlgorithmString" : "<string>", // IHow to compare versions
    "versionAlgorithmCoding" : { Coding }, // IHow to compare versions
    "name" : "<string>", // IName for this code system (computer friendly)
    "title" : "<string>", // I R! Name for this code system (human friendly)
    "status" : "<code>", // I R! draft | active | retired | unknown
    "experimental" : <boolean>, // I R! For testing purposes, not real usage
    "date" : "<dateTime>", // I R! Date last changed
    "publisher" : "<string>", // IName of the publisher/steward (organization or individual)
    "contact" : [{ ContactDetail }], // IContact details for the publisher
    "description" : "<markdown>", // I R! Natural language description of the code system
    "useContext" : [{ UsageContext }], // IThe context that the content is intended to support
    "jurisdiction" : [{ CodeableConcept }], // IIntended jurisdiction for code system (if applicable)
    "purpose" : "<markdown>", // IWhy this code system is defined
    "copyright" : "<markdown>", // IUse and/or publishing restrictions
    "copyrightLabel" : "<string>", // ICopyright holder and year(s)
    "approvalDate" : "<date>", // IWhen the CodeSystem was approved by publisher
    "lastReviewDate" : "<date>", // IWhen the CodeSystem was last reviewed by the publisher
    "effectivePeriod" : { Period }, // IWhen the CodeSystem is expected to be used
    "topic" : [{ CodeableConcept }], // IE.g. Education, Treatment, Assessment, etc
    "author" : [{ ContactDetail }], // IWho authored the CodeSystem
    "editor" : [{ ContactDetail }], // IWho edited the CodeSystem
    "reviewer" : [{ ContactDetail }], // IWho reviewed the CodeSystem
    "endorser" : [{ ContactDetail }], // IWho endorsed the CodeSystem
    "relatedArtifact" : [{ RelatedArtifact }], // IAdditional documentation, citations, etc
    "caseSensitive" : <boolean>, // I R! If code comparison is case sensitive
    "valueSet" : "<canonical>", // ICanonical reference to the value set with entire code system
    "hierarchyMeaning" : "<code>", // Igrouped-by | is-a | part-of | classified-with
    "compositional" : <boolean>, // IIf code system defines a compositional grammar
    "versionNeeded" : <boolean>, // IIf definitions are not stable
    "content" : "<code>", // I R! not-present | example | fragment | complete | supplement
    "supplements" : "<canonical>", // ICanonical URL of Code System this adds designations and properties to
    "count" : "<unsignedInt>", // ITotal concepts in the code system
    "filter" : [{ BackboneElement }], // IFilter that can be used in a value set
    "property" : [{ BackboneElement }], // IAdditional information supplied about each concept
    "concept" : [{ BackboneElement }], // IConcepts in the code system
  }

Summary

Mandatory: 1 element
Must-Support: 10 elements

Extensions

This structure refers to these extensions:

• http://hl7.org/fhir/StructureDefinition/codesystem-sourceReference
• http://hl7.org/fhir/StructureDefinition/codesystem-otherName

This provides the consolidated view (aka snapshot) of the profile after applying the changes in this profile to the base ShareableCodeSystem structure.

Name	Flags	Card.	Type	Description & Constraints
CodeSystem	C	1..1	ShareableCodeSystem	Declares the existence of and describes a code system or code system supplement cnl-0: Name should be usable as an identifier for the module by machine processing applications such as code generation csd-1: Within a code system definition, all the codes SHALL be unique csd-2: If there is an explicit hierarchy, a hierarchyMeaning should be provided csd-3: If there is an implicit hierarchy, a hierarchyMeaning should be provided csd-4: If the code system content = supplement, it must nominate what it's a supplement for scs-1: If a codesystem contains nested concepts, it must specify hierarchyMeaning scs-2: If a codesystem contains example, fragment, or complete content, it must have at least one concept
id	Σ	0..1	id	Logical id of this artifact
meta	Σ	0..1	Meta	Metadata about the resource
implicitRules	?! Σ	0..1	uri	A set of rules under which this content was created
language		0..1	code	Language of the resource content Binding: All Languages ( required ): IETF language tag for a human language Additional Bindings Purpose Common Languages Starter Set
text		0..1	Narrative	Text summary of the resource, for human interpretation
contained		0..*	Resource	Contained, inline Resources
Slices for extension		0..*	Extension	Extension Slice: Unordered, Open by value:url
knowledgeRepresentationLevel	S	0..*	code	narrative | semi-structured | structured | executable URL: http://hl7.org/fhir/StructureDefinition/cqf-knowledgeRepresentationLevel Binding: Knowledge Representation Level ( required )
sourceReference		0..1	uri	Where did this content come from URL: http://hl7.org/fhir/StructureDefinition/codesystem-sourceReference
otherName		0..*	(Complex)	Alternative names URL: http://hl7.org/fhir/StructureDefinition/codesystem-otherName
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored
url	S Σ C	1..1	uri	Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system) cnl-1: URL should not contain | or # - these characters make processing canonical references problematic
identifier	S Σ	0..*	Identifier	Additional identifier for the code system (business identifier)
version	S Σ	1..1	string	Business version of the code system (Coding.version)
versionAlgorithm[x]	S Σ	0..1		How to compare versions Binding: Version Algorithm ( extensible )
versionAlgorithmString			string
versionAlgorithmCoding			Coding
name	S Σ C	0..1	string	Name for this code system (computer friendly)
title	S Σ	1..1	string	Name for this code system (human friendly)
status	?! S Σ	1..1	code	draft | active | retired | unknown Binding: PublicationStatus ( required ): The lifecycle status of an artifact.
experimental	S Σ	1..1	boolean	For testing purposes, not real usage
date	S Σ	1..1	dateTime	Date last changed
publisher	S Σ	0..1	string	Name of the publisher/steward (organization or individual)
contact	S Σ	0..*	ContactDetail	Contact details for the publisher
description	S	1..1	markdown	Natural language description of the code system
useContext	S Σ	0..*	UsageContext	The context that the content is intended to support
jurisdiction	S Σ	0..*	CodeableConcept	Intended jurisdiction for code system (if applicable) Binding: Jurisdiction ValueSet ( extensible ): Countries and regions within which this artifact is targeted for use.
purpose	S	0..1	markdown	Why this code system is defined
copyright	S	0..1	markdown	Use and/or publishing restrictions
copyrightLabel	S	0..1	string	Copyright holder and year(s)
approvalDate		0..1	date	When the CodeSystem was approved by publisher
lastReviewDate		0..1	date	When the CodeSystem was last reviewed by the publisher
effectivePeriod	S Σ	0..1	Period	When the CodeSystem is expected to be used
topic	S	0..*	CodeableConcept	E.g. Education, Treatment, Assessment, etc Binding: Definition Topic ( example )
author		0..*	ContactDetail	Who authored the CodeSystem
editor		0..*	ContactDetail	Who edited the CodeSystem
reviewer		0..*	ContactDetail	Who reviewed the CodeSystem
endorser		0..*	ContactDetail	Who endorsed the CodeSystem
relatedArtifact		0..*	RelatedArtifact	Additional documentation, citations, etc
caseSensitive	S Σ	1..1	boolean	If code comparison is case sensitive
valueSet	Σ	0..1	canonical ( ValueSet )	Canonical reference to the value set with entire code system
hierarchyMeaning	S Σ C	0..1	code	grouped-by | is-a | part-of | classified-with Binding: Code System Hierarchy Meaning ( required ): The meaning of the hierarchy of concepts in a code system.
compositional	Σ	0..1	boolean	If code system defines a compositional grammar
versionNeeded	Σ	0..1	boolean	If definitions are not stable
content	S Σ C	1..1	code	not-present | example | fragment | complete | supplement Binding: Code System Content Mode ( required ): The extent of the content of the code system (the concepts and codes it defines) are represented in a code system resource.
supplements	Σ C TU	0..1	canonical ( CodeSystem )	Canonical URL of Code System this adds designations and properties to
count	Σ	0..1	unsignedInt	Total concepts in the code system
filter	Σ	0..*	BackboneElement	Filter that can be used in a value set
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	code	Code that identifies the filter
description	Σ	0..1	string	How or why the filter is used
operator	Σ	1..*	code	= | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | child-of | descendent-leaf | exists Binding: Filter Operator ( required ): The kind of operation to perform as a part of a property based filter.
value	Σ	1..1	string	What to use for the value
property	Σ	0..*	BackboneElement	Additional information supplied about each concept
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	Σ	1..1	code	Identifies the property on the concepts, and when referred to in operations
uri	Σ	0..1	uri	Formal identifier for the property
description	Σ	0..1	string	Why the property is defined, and/or what it conveys
type	Σ	1..1	code	code | Coding | string | integer | boolean | dateTime | decimal Binding: Property Type ( required ): The type of a property value.
concept	S C	0..*	BackboneElement	Concepts in the code system
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	S C	1..1	code	Code that identifies concept
display	S	0..1	string	Text to display to the user
definition	S	0..1	string	Formal definition
designation	C	0..*	BackboneElement	Additional representations for the concept csd-5: Must have a value for concept.designation.use if concept.designation.additionalUse is present
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
language		0..1	code	Human language of the designation Binding: All Languages ( required ): IETF language tag for a human language Additional Bindings Purpose Common Languages Starter Set
use	C	0..1	Coding	Details how this designation would be used Binding: Designation Use ( extensible ): Details of how a designation would be used.
additionalUse	C TU	0..*	Coding	Additional ways how this designation would be used Binding: Designation Use ( extensible ): Details of how a designation would be used.
value		1..1	string	The text value for this designation
property		0..*	BackboneElement	Property value for the concept
id		0..1	string	Unique id for inter-element referencing
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?! Σ	0..*	Extension	Extensions that cannot be ignored even if unrecognized
code	C	1..1	code	Reference to CodeSystem.property.code
value[x]		1..1		Value of the property for this concept
valueCode			code
valueCoding			Coding
valueString			string
valueInteger			integer
valueBoolean			boolean
valueDateTime			dateTime
valueDecimal			decimal
concept	S C	0..*	See concept (CodeSystem)	Child Concepts (is-a/contains/categorizes)
Documentation for this format

<!-- PublishableCodeSystem -->

<CodeSystem xmlns="http://hl7.org/fhir"
>
  <!-- from Element: extension -->
 <id value="[id]"/><!-- 0..1 Logical id of this artifact -->
 <meta><!-- I 0..1 Meta Metadata about the resource --></meta>
 <implicitRules value="[uri]"/><!-- I 0..1 A set of rules under which this content was created -->
 <language value="[code]"/><!-- I 0..1 Language of the resource content   -->
 <text><!-- I 0..1 Narrative 
     Text summary of the resource, for human interpretation --></text>
 <contained><!-- 0..* Resource Contained, inline Resources --></contained>
 <<a href="publishablecodesystem-definitions.html#CodeSystem.modifierExtension" 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 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) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>

 <modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored  --></modifierExtension>

 <url value="[uri]"/><!-- I 1..1 
     Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system) -->
 <identifier><!-- I 0..* Identifier 
     Additional identifier for the code system (business identifier) --></identifier>
 <version value="[string]"/><!-- I 1..1 Business version of the code system (Coding.version) -->
 <versionAlgorithm[x]><!-- I 0..1 string|Coding How to compare versions   --></versionAlgorithm[x]>
 <name value="[string]"/><!-- I 0..1 Name for this code system (computer friendly) -->
 <title value="[string]"/><!-- I 1..1 Name for this code system (human friendly) -->
 <status value="[code]"/><!-- I 1..1 draft | active | retired | unknown   -->
 <experimental value="[boolean]"/><!-- I 1..1 For testing purposes, not real usage -->
 <date value="[dateTime]"/><!-- I 1..1 Date last changed -->
 <publisher value="[string]"/><!-- I 0..1 Name of the publisher/steward (organization or individual) -->
 <contact><!-- I 0..* ContactDetail Contact details for the publisher --></contact>
 <description value="[markdown]"/><!-- I 1..1 Natural language description of the code system -->
 <useContext><!-- I 0..* UsageContext 
     The context that the content is intended to support --></useContext>
 <jurisdiction><!-- I 0..* CodeableConcept Intended jurisdiction for code system (if applicable)   --></jurisdiction>
 <purpose value="[markdown]"/><!-- I 0..1 Why this code system is defined -->
 <copyright value="[markdown]"/><!-- I 0..1 Use and/or publishing restrictions -->
 <copyrightLabel value="[string]"/><!-- I 0..1 Copyright holder and year(s) -->
 <approvalDate value="[date]"/><!-- I 0..1 When the CodeSystem was approved by publisher -->
 <lastReviewDate value="[date]"/><!-- I 0..1 When the CodeSystem was last reviewed by the publisher -->
 <effectivePeriod><!-- I 0..1 Period 
     When the CodeSystem is expected to be used --></effectivePeriod>
 <topic><!-- I 0..* CodeableConcept E.g. Education, Treatment, Assessment, etc   --></topic>
 <author><!-- I 0..* ContactDetail Who authored the CodeSystem --></author>
 <editor><!-- I 0..* ContactDetail Who edited the CodeSystem --></editor>
 <reviewer><!-- I 0..* ContactDetail Who reviewed the CodeSystem --></reviewer>
 <endorser><!-- I 0..* ContactDetail Who endorsed the CodeSystem --></endorser>
 <relatedArtifact><!-- I 0..* RelatedArtifact 
     Additional documentation, citations, etc --></relatedArtifact>
 <caseSensitive value="[boolean]"/><!-- I 1..1 If code comparison is case sensitive -->
 <valueSet value="[canonical]"/><!-- I 0..1 Canonical reference to the value set with entire code system -->
 <hierarchyMeaning value="[code]"/><!-- I 0..1 grouped-by | is-a | part-of | classified-with   -->
 <compositional value="[boolean]"/><!-- I 0..1 If code system defines a compositional grammar -->
 <versionNeeded value="[boolean]"/><!-- I 0..1 If definitions are not stable -->
 <content value="[code]"/><!-- I 1..1 not-present | example | fragment | complete | supplement   -->
 <supplements value="[canonical]"/><!-- I 0..1 Canonical URL of Code System this adds designations and properties to -->
 <count value="[unsignedInt]"/><!-- I 0..1 Total concepts in the code system -->
 <filter> I 0..* BackboneElement  <!-- I 0..* Filter that can be used in a value set -->
  <<a href="publishablecodesystem-definitions.html#CodeSystem.filter.modifierExtension" title="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 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) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>

  <modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>

  <code value="[code]"/><!-- I 1..1 Code that identifies the filter -->
  <description value="[string]"/><!-- I 0..1 How or why the filter is used -->
  <operator value="[code]"/><!-- I 1..* = | is-a | descendent-of | is-not-a | regex | in | not-in | generalizes | child-of | descendent-leaf | exists   -->
  <value value="[string]"/><!-- I 1..1 What to use for the value -->
 </filter>
 <property> I 0..* BackboneElement  <!-- I 0..* Additional information supplied about each concept -->
  <<a href="publishablecodesystem-definitions.html#CodeSystem.property.modifierExtension" title="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 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) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>

  <modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>

  <code value="[code]"/><!-- I 1..1 
      Identifies the property on the concepts, and when referred to in operations -->
  <uri value="[uri]"/><!-- I 0..1 Formal identifier for the property -->
  <description value="[string]"/><!-- I 0..1 Why the property is defined, and/or what it conveys -->
  <type value="[code]"/><!-- I 1..1 code | Coding | string | integer | boolean | dateTime | decimal   -->
 </property>
 <concept> I 0..* BackboneElement  <!-- I 0..* Concepts in the code system -->
  <<a href="publishablecodesystem-definitions.html#CodeSystem.concept.modifierExtension" title="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 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) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>

  <modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>

  <code value="[code]"/><!-- I 1..1 Code that identifies concept -->
  <display value="[string]"/><!-- I 0..1 Text to display to the user -->
  <definition value="[string]"/><!-- I 0..1 Formal definition -->
  <designation> I 0..* BackboneElement  <!-- I 0..* Additional representations for the concept -->
   <<a href="publishablecodesystem-definitions.html#CodeSystem.concept.designation.modifierExtension" title="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 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) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>

   <modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>

   <language value="[code]"/><!-- I 0..1 Human language of the designation   -->
   <use><!-- I 0..1 Coding Details how this designation would be used   --></use>
   <additionalUse><!-- I 0..* Coding Additional ways how this designation would be used   --></additionalUse>
   <value value="[string]"/><!-- I 1..1 The text value for this designation -->
  </designation>
  <property> I 0..* BackboneElement  <!-- I 0..* Property value for the concept -->
   <<a href="publishablecodesystem-definitions.html#CodeSystem.concept.property.modifierExtension" title="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 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) (this element modifies the meaning of other elements)" class="dict"></modifierExtension>

   <modifierExtension><!-- I 0..* Extension  Extensions that cannot be ignored even if unrecognized  --></modifierExtension>

   <code value="[code]"/><!-- I 1..1 Reference to CodeSystem.property.code -->
   <value[x]><!-- I 1..1 code|Coding|string|integer|
     boolean|dateTime|decimal 
       Value of the property for this concept --></value[x]>
  </property>
  <concept><!-- See http://hl7.org/fhir/StructureDefinition/CodeSystem#CodeSystem.concept  Child Concepts (is-a/contains/categorizes) --></concept>
 </concept>
</CodeSystem>

{ // PublishableCodeSystem
  // from Element: extension
    "meta" : { Meta }, // IMetadata about the resource
    "implicitRules" : "<uri>", // IA set of rules under which this content was created
    "language" : "<code>", // ILanguage of the resource content
    "text" : { Narrative }, // IText summary of the resource, for human interpretation
    "contained" : [{ Resource }], //Contained, inline Resources
    "extension" : [ //  sliced by value:url  in the specified order, Open 
      { // narrative | semi-structured | structured | executable // I
        // from Element: extension
      },
      { // 

      { // Where did this content come from // I

        // from Element: extension
      },
      { // 

      { // Alternative names // I

        // from Element: extension
      }
    ],
    "<a href="publishablecodesystem-definitions.html#CodeSystem.modifierExtension" 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 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) (this element modifies the meaning of other elements)" class="dict">

    "modifierExtension" : [{ Extension }], // IExtensions that cannot be ignored

    "url" : "<uri>", // I R! Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system)
    "identifier" : [{ Identifier }], // IAdditional identifier for the code system (business identifier)
    "version" : "<string>", // I R! Business version of the code system (Coding.version)
  // value[x]: How to compare versions. One of these 2:
    "versionAlgorithmString" : "<string>", // IHow to compare versions
    "versionAlgorithmCoding" : { Coding }, // IHow to compare versions
    "name" : "<string>", // IName for this code system (computer friendly)
    "title" : "<string>", // I R! Name for this code system (human friendly)
    "status" : "<code>", // I R! draft | active | retired | unknown
    "experimental" : <boolean>, // I R! For testing purposes, not real usage
    "date" : "<dateTime>", // I R! Date last changed
    "publisher" : "<string>", // IName of the publisher/steward (organization or individual)
    "contact" : [{ ContactDetail }], // IContact details for the publisher
    "description" : "<markdown>", // I R! Natural language description of the code system
    "useContext" : [{ UsageContext }], // IThe context that the content is intended to support
    "jurisdiction" : [{ CodeableConcept }], // IIntended jurisdiction for code system (if applicable)
    "purpose" : "<markdown>", // IWhy this code system is defined
    "copyright" : "<markdown>", // IUse and/or publishing restrictions
    "copyrightLabel" : "<string>", // ICopyright holder and year(s)
    "approvalDate" : "<date>", // IWhen the CodeSystem was approved by publisher
    "lastReviewDate" : "<date>", // IWhen the CodeSystem was last reviewed by the publisher
    "effectivePeriod" : { Period }, // IWhen the CodeSystem is expected to be used
    "topic" : [{ CodeableConcept }], // IE.g. Education, Treatment, Assessment, etc
    "author" : [{ ContactDetail }], // IWho authored the CodeSystem
    "editor" : [{ ContactDetail }], // IWho edited the CodeSystem
    "reviewer" : [{ ContactDetail }], // IWho reviewed the CodeSystem
    "endorser" : [{ ContactDetail }], // IWho endorsed the CodeSystem
    "relatedArtifact" : [{ RelatedArtifact }], // IAdditional documentation, citations, etc
    "caseSensitive" : <boolean>, // I R! If code comparison is case sensitive
    "valueSet" : "<canonical>", // ICanonical reference to the value set with entire code system
    "hierarchyMeaning" : "<code>", // Igrouped-by | is-a | part-of | classified-with
    "compositional" : <boolean>, // IIf code system defines a compositional grammar
    "versionNeeded" : <boolean>, // IIf definitions are not stable
    "content" : "<code>", // I R! not-present | example | fragment | complete | supplement
    "supplements" : "<canonical>", // ICanonical URL of Code System this adds designations and properties to
    "count" : "<unsignedInt>", // ITotal concepts in the code system
    "filter" : [{ BackboneElement }], // IFilter that can be used in a value set
    "property" : [{ BackboneElement }], // IAdditional information supplied about each concept
    "concept" : [{ BackboneElement }], // IConcepts in the code system
  }