<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="namingsystem-identifier-type"/><meta><lastUpdated value="2026-04-03T20:06:10.198+00:00"/></meta><text><status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem namingsystem-identifier-type</b></p><a name="namingsystem-identifier-type"> </a><a name="hcnamingsystem-identifier-type"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/namingsystem-identifier-type</code> defines the following codes:</p><table class="codes"><tr><td style="white-space:nowrap"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style="white-space:nowrap">oid<a name="namingsystem-identifier-type-oid"> </a></td><td>OID</td><td><div><p>An ISO object identifier; e.g. 1.2.3.4.5.</p>
</div></td></tr><tr><td style="white-space:nowrap">uuid<a name="namingsystem-identifier-type-uuid"> </a></td><td>UUID</td><td><div><p>A universally unique identifier of the form a5afddf4-e880-459b-876e-e4591b0acc11.</p>
</div></td></tr><tr><td style="white-space:nowrap">uri<a name="namingsystem-identifier-type-uri"> </a></td><td>URI</td><td><div><p>A uniform resource identifier (ideally a URL - uniform resource locator); e.g. http://unitsofmeasure.org.</p>
</div></td></tr><tr><td style="white-space:nowrap">iri-stem<a name="namingsystem-identifier-type-iri-stem"> </a></td><td>IRI stem</td><td><div><p>An IRI string that can be prepended to the code to obtain a concept IRI for RDF applications. This should be a valid, absolute IRI as defined in RFC 3987. See <a href="rdf.html#iri-stem">the RDF spec</a> for details on how this value may be used.</p>
</div></td></tr><tr><td style="white-space:nowrap">v2csmnemonic<a name="namingsystem-identifier-type-v2csmnemonic"> </a></td><td>V2CSMNemonic</td><td><div><p>A short string published by HL7 for use in the V2 family of standsrds to idenfify a code system in the V12 coded data types CWE, CNE, and CF. The code values are also published by HL7 at http://www.hl7.org/Special/committees/vocab/table_0396/index.cfm</p>
</div></td></tr><tr><td style="white-space:nowrap">other<a name="namingsystem-identifier-type-other"> </a></td><td>Other</td><td><div><p>Some other type of unique identifier; e.g. HL7-assigned reserved string such as LN for LOINC.</p>
</div></td></tr></table></div></text><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"><valueCode value="vocab"/></extension><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"><valueCode value="normative"/></extension><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm"><valueInteger value="4"/></extension><url value="http://hl7.org/fhir/namingsystem-identifier-type"/><identifier><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.4.493"/></identifier><identifier><use value="old"/><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.1.486"/></identifier><identifier><use value="old"/><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.2.293"/></identifier><version value="6.0.0-ballot4"/><name value="NamingSystemIdentifierType"/><title value="Naming System Identifier Type"/><status value="active"/><experimental value="false"/><date value="2023-01-26T15:53:48Z"/><publisher value="HL7 (FHIR Project)"/><contact><telecom><system value="url"/><value value="http://hl7.org/fhir"/></telecom><telecom><system value="email"/><value value="fhir@lists.hl7.org"/></telecom></contact><description value="Identifies the style of unique identifier used to identify a namespace."/><jurisdiction><coding><system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/><code value="001"/><display value="World"/></coding></jurisdiction><caseSensitive value="true"/><valueSet value="http://hl7.org/fhir/ValueSet/namingsystem-identifier-type"/><content value="complete"/><concept><code value="oid"/><display value="OID"/><definition value="An ISO object identifier; e.g. 1.2.3.4.5."/></concept><concept><code value="uuid"/><display value="UUID"/><definition value="A universally unique identifier of the form a5afddf4-e880-459b-876e-e4591b0acc11."/></concept><concept><code value="uri"/><display value="URI"/><definition value="A uniform resource identifier (ideally a URL - uniform resource locator); e.g. http://unitsofmeasure.org."/></concept><concept><code value="iri-stem"/><display value="IRI stem"/><definition value="An IRI string that can be prepended to the code to obtain a concept IRI for RDF applications. This should be a valid, absolute IRI as defined in RFC 3987. See [the RDF spec](rdf.html#iri-stem) for details on how this value may be used."/></concept><concept><code value="v2csmnemonic"/><display value="V2CSMNemonic"/><definition value="A short string published by HL7 for use in the V2 family of standsrds to idenfify a code system in the V12 coded data types CWE, CNE, and CF. The code values are also published by HL7 at http://www.hl7.org/Special/committees/vocab/table_0396/index.cfm"/></concept><concept><code value="other"/><display value="Other"/><definition value="Some other type of unique identifier; e.g. HL7-assigned reserved string such as LN for LOINC."/></concept></CodeSystem>