FHIR Extensions Pack
5.4.0 - May 2026 International flag

FHIR Extensions Pack, published by HL7 International / FHIR Infrastructure. This guide is not an authorized publication; it is the continuous build for version 5.4.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/fhir-extensions/ and changes regularly. See the Directory of published versions

Extension: RDF Concept IRI

Official URL: http://hl7.org/fhir/StructureDefinition/rdf-concept-iri Version: 5.4.0
Standards status: Trial-use Maturity Level: 1 Responsible: HL7 International / Implementable Technology Specifications Computable Name: RDFConceptIri
Other Identifiers: OID:2.16.840.1.113883.4.642.40.97.42.117

Concept IRI representing the RDF-equivalent of a Coding, as specified by the IRI stem registered in the NamingSystem that corresponds to the Coding.system.

Context of Use

This extension may be used on the following element(s)

Usage info

Usages:

  • This Extension is not used by any profiles in this Specification

You can also check for usages in the FHIR IG Statistics

Changes since version 5.3.0:

  • New Content

    • Formal Views of Extension Content

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

    This structure is derived from Extension

    Summary

    Simple Extension with the type uri: Concept IRI representing the RDF-equivalent of a Coding, as specified by the IRI stem registered in the NamingSystem that corresponds to the Coding.system.

    Maturity: 1

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: doco
    Extension 0..* Extension RDF Concept IRI
    Extension.extension 0..0 Extension
    Extension.url 1..1 uri "http://hl7.org/fhir/StructureDefinition/rdf-concept-iri"
    Extension.value[x] 1..1 uri Value of extension
    Example Example SNOMED CT concept IRI: http://snomed.info/id/27113001
    Example Example LOINC concept IRI: http://loinc.org/rdf/29463-7

    doco Documentation for this format
    NameFlagsCard.TypeDescription & Constraints    Filter: doco
    Extension 0..* Extension RDF Concept IRI
    Extension.id 0..1 id Unique id for inter-element referencing
    Extension.extension 0..0 Extension
    Slice: Unordered, Open by value:url

    Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them
    Extension.url 1..1 uri "http://hl7.org/fhir/StructureDefinition/rdf-concept-iri"
    Extension.value[x] 1..1 uri Value of extension
    Example Example SNOMED CT concept IRI: http://snomed.info/id/27113001
    Example Example LOINC concept IRI: http://loinc.org/rdf/29463-7

    doco Documentation for this format

    This structure is derived from Extension

    Summary

    Simple Extension with the type uri: Concept IRI representing the RDF-equivalent of a Coding, as specified by the IRI stem registered in the NamingSystem that corresponds to the Coding.system.

    Maturity: 1

    Differential View

    This structure is derived from Extension

    NameFlagsCard.TypeDescription & Constraints    Filter: doco
    Extension 0..* Extension RDF Concept IRI
    Extension.extension 0..0 Extension
    Extension.url 1..1 uri "http://hl7.org/fhir/StructureDefinition/rdf-concept-iri"
    Extension.value[x] 1..1 uri Value of extension
    Example Example SNOMED CT concept IRI: http://snomed.info/id/27113001
    Example Example LOINC concept IRI: http://loinc.org/rdf/29463-7

    doco Documentation for this format

    Snapshot View

    NameFlagsCard.TypeDescription & Constraints    Filter: doco
    Extension 0..* Extension RDF Concept IRI
    Extension.id 0..1 id Unique id for inter-element referencing
    Extension.extension 0..0 Extension
    Slice: Unordered, Open by value:url

    Slicing Note: The rules on this element (including its children) apply to all the slices, but are not repeated in them
    Extension.url 1..1 uri "http://hl7.org/fhir/StructureDefinition/rdf-concept-iri"
    Extension.value[x] 1..1 uri Value of extension
    Example Example SNOMED CT concept IRI: http://snomed.info/id/27113001
    Example Example LOINC concept IRI: http://loinc.org/rdf/29463-7

    doco Documentation for this format

     

    Other representations of profile: CSV, Excel, Schematron

    Constraints

    Id Grade Path(s) Description Expression
    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()

    R4B

    The extension is unchanged in R4B

    R4

    The extension is unchanged in R4

    R3

    The extension is unchanged in R3

    Search Parameters for this Extension

    (none found)