<?xml version="1.0" encoding="UTF-8"?><CodeSystem xmlns="http://hl7.org/fhir"><id value="reference-version-rules"/><meta><lastUpdated value="2026-03-31T18:55:04.283+00:00"/></meta><text><status value="generated"/><div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: CodeSystem reference-version-rules</b></p><a name="reference-version-rules"> </a><a name="hcreference-version-rules"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/reference-version-rules</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">either<a name="reference-version-rules-either"> </a></td><td>Either Specific or independent</td><td>The reference may be either version independent or version specific.</td></tr><tr><td style="white-space:nowrap">independent<a name="reference-version-rules-independent"> </a></td><td>Version independent</td><td>The reference must be version independent.</td></tr><tr><td style="white-space:nowrap">specific<a name="reference-version-rules-specific"> </a></td><td>Version Specific</td><td>The reference must be version specific.</td></tr></table></div></text><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg"><valueCode value="fhir"/></extension><extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status"><valueCode value="normative"/></extension><url value="http://hl7.org/fhir/reference-version-rules"/><identifier><system value="urn:ietf:rfc:3986"/><value value="urn:oid:2.16.840.1.113883.4.642.4.90"/></identifier><version value="6.0.0-ballot4"/><name value="ReferenceVersionRules"/><title value="ReferenceVersionRules"/><status value="active"/><experimental value="false"/><date value="2026-03-31T18:55:04+00:00"/><publisher value="HL7 International / FHIR Infrastructure"/><contact><telecom><system value="url"/><value value="http://hl7.org/fhir"/></telecom><telecom><system value="email"/><value value="fhir@lists.hl7.org"/></telecom></contact><contact><telecom><system value="url"/><value value="http://www.hl7.org/Special/committees/fiwg"/></telecom></contact><description value="Whether a reference needs to be version specific or version independent, or whether either can be used."/><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/reference-version-rules"/><content value="complete"/><concept><code value="either"/><display value="Either Specific or independent"/><definition value="The reference may be either version independent or version specific."/></concept><concept><code value="independent"/><display value="Version independent"/><definition value="The reference must be version independent."/></concept><concept><code value="specific"/><display value="Version Specific"/><definition value="The reference must be version specific."/></concept></CodeSystem>