<status value="active"/><experimental value="false"/><date value="2026-03-16T22:59:53+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="Identifies the purpose for this identifier, if known ."/><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/identifier-use"/><content value="complete"/><concept><code value="usual"/><display value="Usual"/><definition value="The identifier recommended for display and use in real-world interactions which should be used when such identifier is different from the "official" identifier."/></concept><concept><code value="official"/><display value="Official"/><definition value="The identifier considered to be most trusted for the identification of this item. Sometimes also known as "primary" and "main". The determination of "official" is subjective and implementation guides often provide additional guidelines for use."/></concept><concept><code value="temp"/><display value="Temp"/><definition value="A temporary identifier."/></concept><concept><code value="secondary"/><display value="Secondary"/><definition value="An identifier that was assigned in secondary use - it serves to identify the object in a relative context, but cannot be consistently assigned to the same object again in a different context."/></concept><concept><code value="old"/><display value="Old"/><definition value="The identifier id no longer considered valid, but may be relevant for search purposes. E.g. Changes to identifier schemes, account merges, etc."/></concept></CodeSystem>

Generated Narrative: CodeSystem identifier-use

This case-sensitive code system http://hl7.org/fhir/identifier-use defines the following codes:

Code	Display	Definition
usual	Usual	The identifier recommended for display and use in real-world interactions which should be used when such identifier is different from the "official" identifier.
official	Official	The identifier considered to be most trusted for the identification of this item. Sometimes also known as "primary" and "main". The determination of "official" is subjective and implementation guides often provide additional guidelines for use.
temp	Temp	A temporary identifier.
secondary	Secondary	An identifier that was assigned in secondary use - it serves to identify the object in a relative context, but cannot be consistently assigned to the same object again in a different context.
old	Old	The identifier id no longer considered valid, but may be relevant for search purposes. E.g. Changes to identifier schemes, account merges, etc.