Data Sharing Framework (DSF) Implementation Guide - Local Development build (v2.0.0) built by the FHIR (HL7® FHIR® Standard) Build Tools. See the Directory of published versions

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Resource Profile: CodeSystem

Usages:

• CapabilityStatements using this Profile: CapabilityStatement[http://dsf.dev/fhir/CapabilityStatement/dsf]
• This Profile is not used by any profiles in this Implementation Guide

Formal Views of Profile Content

Description of Profiles, Differentials, Snapshots and how the different presentations work.

• Key Elements Table
• Differential Table
• Snapshot Table
• Statistics/References
• All

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
CodeSystem	C	0..*	CodeSystem	Declares the existence of and describes a code system or code system supplement Constraints: csd-0, csd-1
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
url	Σ	1..1	uri	Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system)
version	Σ	1..1	string	Business version of the code system (Coding.version)
status	?!Σ	1..1	code	draft | active | retired | unknown Binding: PublicationStatus (required): The lifecycle status of an artifact.
content	Σ	1..1	code	not-present | example | fragment | complete | supplement Binding: CodeSystemContentMode (required): The extent of the content of the code system (the concepts and codes it defines) are represented in a code system resource.
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
CodeSystem.status	required	PublicationStatus http://hl7.org/fhir/ValueSet/publication-status|4.0.1 From the FHIR Standard
CodeSystem.content	required	CodeSystemContentMode http://hl7.org/fhir/ValueSet/codesystem-content-mode|4.0.1 From the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
csd-0	warning	CodeSystem	Name should be usable as an identifier for the module by machine processing applications such as code generation : name.matches('[A-Z]([A-Za-z0-9_]){0,254}')
csd-1	error	CodeSystem	Within a code system definition, all the codes SHALL be unique : concept.code.combine($this.descendants().concept.code).isDistinct()
dom-2	error	CodeSystem	If the resource is contained in another resource, it SHALL NOT contain nested Resources : contained.contained.empty()
dom-3	error	CodeSystem	If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource : contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4	error	CodeSystem	If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated : contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5	error	CodeSystem	If a resource is contained in another resource, it SHALL NOT have a security label : contained.meta.security.empty()
dom-6	best practice	CodeSystem	A resource should have narrative for robust management : text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()

This structure is derived from CodeSystem

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
CodeSystem		0..*	CodeSystem	Declares the existence of and describes a code system or code system supplement
url		1..1	uri	Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system)
version		1..1	string	Business version of the code system (Coding.version)
Documentation for this format

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
CodeSystem	C	0..*	CodeSystem	Declares the existence of and describes a code system or code system supplement Constraints: csd-0, csd-1
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: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding
text		0..1	Narrative	Text summary of the resource, for human interpretation
contained		0..*	Resource	Contained, inline Resources
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
url	Σ	1..1	uri	Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system)
identifier	Σ	0..*	Identifier	Additional identifier for the code system (business identifier)
version	Σ	1..1	string	Business version of the code system (Coding.version)
name	ΣC	0..1	string	Name for this code system (computer friendly)
title	Σ	0..1	string	Name for this code system (human friendly)
status	?!Σ	1..1	code	draft | active | retired | unknown Binding: PublicationStatus (required): The lifecycle status of an artifact.
experimental	Σ	0..1	boolean	For testing purposes, not real usage
date	Σ	0..1	dateTime	Date last changed
publisher	Σ	0..1	string	Name of the publisher (organization or individual)
contact	Σ	0..*	ContactDetail	Contact details for the publisher
description		0..1	markdown	Natural language description of the code system
useContext	Σ	0..*	UsageContext	The context that the content is intended to support
jurisdiction	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		0..1	markdown	Why this code system is defined
copyright		0..1	markdown	Use and/or publishing restrictions
caseSensitive	Σ	0..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	Σ	0..1	code	grouped-by | is-a | part-of | classified-with Binding: CodeSystemHierarchyMeaning (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	Σ	1..1	code	not-present | example | fragment | complete | supplement Binding: CodeSystemContentMode (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	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 | exists Binding: FilterOperator (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: PropertyType (required): The type of a property value.
concept		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		1..1	code	Code that identifies concept
display		0..1	string	Text to display to the user
definition		0..1	string	Formal definition
designation		0..*	BackboneElement	Additional representations 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
language		0..1	code	Human language of the designation Binding: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding
use		0..1	Coding	Details how this designation would be used Binding: DesignationUse (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		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		0..*	See concept (CodeSystem)	Child Concepts (is-a/contains/categorizes)
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
CodeSystem.language	preferred	CommonLanguages http://hl7.org/fhir/ValueSet/languages From the FHIR Standard Additional Bindings Purpose AllLanguages Max Binding
CodeSystem.status	required	PublicationStatus http://hl7.org/fhir/ValueSet/publication-status|4.0.1 From the FHIR Standard
CodeSystem.jurisdiction	extensible	Jurisdiction ValueSet http://hl7.org/fhir/ValueSet/jurisdiction From the FHIR Standard
CodeSystem.hierarchyMeaning	required	CodeSystemHierarchyMeaning http://hl7.org/fhir/ValueSet/codesystem-hierarchy-meaning|4.0.1 From the FHIR Standard
CodeSystem.content	required	CodeSystemContentMode http://hl7.org/fhir/ValueSet/codesystem-content-mode|4.0.1 From the FHIR Standard
CodeSystem.filter.operator	required	FilterOperator http://hl7.org/fhir/ValueSet/filter-operator|4.0.1 From the FHIR Standard
CodeSystem.property.type	required	PropertyType http://hl7.org/fhir/ValueSet/concept-property-type|4.0.1 From the FHIR Standard
CodeSystem.concept.designation.language	preferred	CommonLanguages http://hl7.org/fhir/ValueSet/languages From the FHIR Standard Additional Bindings Purpose AllLanguages Max Binding
CodeSystem.concept.designation.use	extensible	DesignationUse http://hl7.org/fhir/ValueSet/designation-use From the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
csd-0	warning	CodeSystem	Name should be usable as an identifier for the module by machine processing applications such as code generation : name.matches('[A-Z]([A-Za-z0-9_]){0,254}')
csd-1	error	CodeSystem	Within a code system definition, all the codes SHALL be unique : concept.code.combine($this.descendants().concept.code).isDistinct()
dom-2	error	CodeSystem	If the resource is contained in another resource, it SHALL NOT contain nested Resources : contained.contained.empty()
dom-3	error	CodeSystem	If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource : contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4	error	CodeSystem	If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated : contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5	error	CodeSystem	If a resource is contained in another resource, it SHALL NOT have a security label : contained.meta.security.empty()
dom-6	best practice	CodeSystem	A resource should have narrative for robust management : text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()

This structure is derived from CodeSystem

Summary

Mandatory: 2 elements

Key Elements View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
CodeSystem	C	0..*	CodeSystem	Declares the existence of and describes a code system or code system supplement Constraints: csd-0, csd-1
implicitRules	?!Σ	0..1	uri	A set of rules under which this content was created
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
url	Σ	1..1	uri	Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system)
version	Σ	1..1	string	Business version of the code system (Coding.version)
status	?!Σ	1..1	code	draft | active | retired | unknown Binding: PublicationStatus (required): The lifecycle status of an artifact.
content	Σ	1..1	code	not-present | example | fragment | complete | supplement Binding: CodeSystemContentMode (required): The extent of the content of the code system (the concepts and codes it defines) are represented in a code system resource.
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
CodeSystem.status	required	PublicationStatus http://hl7.org/fhir/ValueSet/publication-status|4.0.1 From the FHIR Standard
CodeSystem.content	required	CodeSystemContentMode http://hl7.org/fhir/ValueSet/codesystem-content-mode|4.0.1 From the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
csd-0	warning	CodeSystem	Name should be usable as an identifier for the module by machine processing applications such as code generation : name.matches('[A-Z]([A-Za-z0-9_]){0,254}')
csd-1	error	CodeSystem	Within a code system definition, all the codes SHALL be unique : concept.code.combine($this.descendants().concept.code).isDistinct()
dom-2	error	CodeSystem	If the resource is contained in another resource, it SHALL NOT contain nested Resources : contained.contained.empty()
dom-3	error	CodeSystem	If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource : contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4	error	CodeSystem	If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated : contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5	error	CodeSystem	If a resource is contained in another resource, it SHALL NOT have a security label : contained.meta.security.empty()
dom-6	best practice	CodeSystem	A resource should have narrative for robust management : text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()

Differential View

This structure is derived from CodeSystem

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
CodeSystem		0..*	CodeSystem	Declares the existence of and describes a code system or code system supplement
url		1..1	uri	Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system)
version		1..1	string	Business version of the code system (Coding.version)
Documentation for this format

Snapshot View

Name	Flags	Card.	Type	Description & Constraints    Filter: Bindings Constraints Obligations
CodeSystem	C	0..*	CodeSystem	Declares the existence of and describes a code system or code system supplement Constraints: csd-0, csd-1
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: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding
text		0..1	Narrative	Text summary of the resource, for human interpretation
contained		0..*	Resource	Contained, inline Resources
extension		0..*	Extension	Additional content defined by implementations
modifierExtension	?!	0..*	Extension	Extensions that cannot be ignored
url	Σ	1..1	uri	Canonical identifier for this code system, represented as a URI (globally unique) (Coding.system)
identifier	Σ	0..*	Identifier	Additional identifier for the code system (business identifier)
version	Σ	1..1	string	Business version of the code system (Coding.version)
name	ΣC	0..1	string	Name for this code system (computer friendly)
title	Σ	0..1	string	Name for this code system (human friendly)
status	?!Σ	1..1	code	draft | active | retired | unknown Binding: PublicationStatus (required): The lifecycle status of an artifact.
experimental	Σ	0..1	boolean	For testing purposes, not real usage
date	Σ	0..1	dateTime	Date last changed
publisher	Σ	0..1	string	Name of the publisher (organization or individual)
contact	Σ	0..*	ContactDetail	Contact details for the publisher
description		0..1	markdown	Natural language description of the code system
useContext	Σ	0..*	UsageContext	The context that the content is intended to support
jurisdiction	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		0..1	markdown	Why this code system is defined
copyright		0..1	markdown	Use and/or publishing restrictions
caseSensitive	Σ	0..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	Σ	0..1	code	grouped-by | is-a | part-of | classified-with Binding: CodeSystemHierarchyMeaning (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	Σ	1..1	code	not-present | example | fragment | complete | supplement Binding: CodeSystemContentMode (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	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 | exists Binding: FilterOperator (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: PropertyType (required): The type of a property value.
concept		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		1..1	code	Code that identifies concept
display		0..1	string	Text to display to the user
definition		0..1	string	Formal definition
designation		0..*	BackboneElement	Additional representations 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
language		0..1	code	Human language of the designation Binding: CommonLanguages (preferred): A human language. Additional Bindings Purpose AllLanguages Max Binding
use		0..1	Coding	Details how this designation would be used Binding: DesignationUse (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		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		0..*	See concept (CodeSystem)	Child Concepts (is-a/contains/categorizes)
Documentation for this format

Terminology Bindings

Path	Conformance	ValueSet	URI
CodeSystem.language	preferred	CommonLanguages http://hl7.org/fhir/ValueSet/languages From the FHIR Standard Additional Bindings Purpose AllLanguages Max Binding
CodeSystem.status	required	PublicationStatus http://hl7.org/fhir/ValueSet/publication-status|4.0.1 From the FHIR Standard
CodeSystem.jurisdiction	extensible	Jurisdiction ValueSet http://hl7.org/fhir/ValueSet/jurisdiction From the FHIR Standard
CodeSystem.hierarchyMeaning	required	CodeSystemHierarchyMeaning http://hl7.org/fhir/ValueSet/codesystem-hierarchy-meaning|4.0.1 From the FHIR Standard
CodeSystem.content	required	CodeSystemContentMode http://hl7.org/fhir/ValueSet/codesystem-content-mode|4.0.1 From the FHIR Standard
CodeSystem.filter.operator	required	FilterOperator http://hl7.org/fhir/ValueSet/filter-operator|4.0.1 From the FHIR Standard
CodeSystem.property.type	required	PropertyType http://hl7.org/fhir/ValueSet/concept-property-type|4.0.1 From the FHIR Standard
CodeSystem.concept.designation.language	preferred	CommonLanguages http://hl7.org/fhir/ValueSet/languages From the FHIR Standard Additional Bindings Purpose AllLanguages Max Binding
CodeSystem.concept.designation.use	extensible	DesignationUse http://hl7.org/fhir/ValueSet/designation-use From the FHIR Standard

Constraints

Id	Grade	Path(s)	Details	Requirements
csd-0	warning	CodeSystem	Name should be usable as an identifier for the module by machine processing applications such as code generation : name.matches('[A-Z]([A-Za-z0-9_]){0,254}')
csd-1	error	CodeSystem	Within a code system definition, all the codes SHALL be unique : concept.code.combine($this.descendants().concept.code).isDistinct()
dom-2	error	CodeSystem	If the resource is contained in another resource, it SHALL NOT contain nested Resources : contained.contained.empty()
dom-3	error	CodeSystem	If the resource is contained in another resource, it SHALL be referred to from elsewhere in the resource or SHALL refer to the containing resource : contained.where((('#'+id in (%resource.descendants().reference | %resource.descendants().as(canonical) | %resource.descendants().as(uri) | %resource.descendants().as(url))) or descendants().where(reference = '#').exists() or descendants().where(as(canonical) = '#').exists() or descendants().where(as(canonical) = '#').exists()).not()).trace('unmatched', id).empty()
dom-4	error	CodeSystem	If a resource is contained in another resource, it SHALL NOT have a meta.versionId or a meta.lastUpdated : contained.meta.versionId.empty() and contained.meta.lastUpdated.empty()
dom-5	error	CodeSystem	If a resource is contained in another resource, it SHALL NOT have a security label : contained.meta.security.empty()
dom-6	best practice	CodeSystem	A resource should have narrative for robust management : text.`div`.exists()
ele-1	error	**ALL** elements	All FHIR elements must have a @value or children : hasValue() or (children().count() > id.count())
ext-1	error	**ALL** extensions	Must have either extensions or value[x], not both : extension.exists() != value.exists()

This structure is derived from CodeSystem

Summary

Mandatory: 2 elements

Other representations of profile: CSV, Excel, Schematron