<status value="active"/> <experimental value="false"/> <date value="2026-03-17T21:02:03.8104715+00:00"/> <publisher value="FHIR Infrastructure"/> <contact> <name value="FHIR Infrastructure"/> <telecom> <system value="url"/> <value value="http://www.hl7.org/Special/committees/fiwg"/> </telecom> </contact> <description value="This cross-version ValueSet represents content from http://hl7.org/fhir/ValueSet/data-absent-reason|4.0.1 for use in FHIR STU3 that is appropriate for use but unavailable in `http://hl7.org/fhir/ValueSet/observation-valueabsentreason|3.0.2`."/> <jurisdiction> <coding> <system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/> <code value="001"/> <display value="World"/> </coding> </jurisdiction> <purpose value="This value set is part of the cross-version definitions generated to enable use of the value set `http://hl7.org/fhir/ValueSet/data-absent-reason|4.0.1` as defined in FHIR R4 in FHIR STU3. The source value set is bound to the following FHIR R4 elements: * `Observation.component.dataAbsentReason` * `Observation.dataAbsentReason` The following concepts are not included in this cross-version definition because they have valid representations: * `http://terminology.hl7.org/CodeSystem/data-absent-reason#as-text` * `http://terminology.hl7.org/CodeSystem/data-absent-reason#error` * `http://terminology.hl7.org/CodeSystem/data-absent-reason#masked` * `http://terminology.hl7.org/CodeSystem/data-absent-reason#negative-infinity` * `http://terminology.hl7.org/CodeSystem/data-absent-reason#not-asked` * `http://terminology.hl7.org/CodeSystem/data-absent-reason#not-performed` * `http://terminology.hl7.org/CodeSystem/data-absent-reason#positive-infinity` * `http://terminology.hl7.org/CodeSystem/data-absent-reason#temp-unknown` * `http://terminology.hl7.org/CodeSystem/data-absent-reason#unsupported` Following are the generation technical comments: One or more source concepts are either not mapped or broader than their targets, so the value set relationship is broadened. One or more source concepts are narrower than their targets, so the value set relationship is narrowed. The source value set has more active concepts (15) than the target (10), so the source is broader than the target."/> <compose> <include> <system value="http://terminology.hl7.org/CodeSystem/data-absent-reason"/> <version value="4.0.1"/> <concept> <code value="asked-declined"/> <display value="Asked But Declined"/> </concept> <concept> <code value="asked-unknown"/> <display value="Asked But Unknown"/> </concept> <concept> <code value="not-a-number"/> <display value="Not a Number (NaN)"/> </concept> <concept> <code value="not-applicable"/> <display value="Not Applicable"/> </concept> <concept> <code value="not-permitted"/> <display value="Not Permitted"/> </concept> <concept> <code value="unknown"/> <display value="Unknown"/> </concept> </include> </compose> <expansion> <timestamp value="2026-03-17T21:02:03.8104715+00:00"/> <contains> <system value="http://terminology.hl7.org/CodeSystem/data-absent-reason"/> <version value="4.0.1"/> <code value="asked-declined"/> <display value="Asked But Declined"/> </contains> <contains> <system value="http://terminology.hl7.org/CodeSystem/data-absent-reason"/> <version value="4.0.1"/> <code value="asked-unknown"/> <display value="Asked But Unknown"/> </contains> <contains> <system value="http://terminology.hl7.org/CodeSystem/data-absent-reason"/> <version value="4.0.1"/> <code value="not-a-number"/> <display value="Not a Number (NaN)"/> </contains> <contains> <system value="http://terminology.hl7.org/CodeSystem/data-absent-reason"/> <version value="4.0.1"/> <code value="not-applicable"/> <display value="Not Applicable"/> </contains> <contains> <system value="http://terminology.hl7.org/CodeSystem/data-absent-reason"/> <version value="4.0.1"/> <code value="not-permitted"/> <display value="Not Permitted"/> </contains> <contains> <system value="http://terminology.hl7.org/CodeSystem/data-absent-reason"/> <version value="4.0.1"/> <code value="unknown"/> <display value="Unknown"/> </contains> </expansion> </ValueSet>

Generated Narrative: ValueSet R4-data-absent-reason-for-R3-observation-valueabsentreason

This value set expansion contains 6 concepts.

System	Version	Code	Display	Definition
`http://terminology.hl7.org/CodeSystem/data-absent-reason`	4.0.1	asked-declined	Asked But Declined	The source was asked but declined to answer.
`http://terminology.hl7.org/CodeSystem/data-absent-reason`	4.0.1	asked-unknown	Asked But Unknown	The source was asked but does not know the value.
`http://terminology.hl7.org/CodeSystem/data-absent-reason`	4.0.1	not-a-number	Not a Number (NaN)	The numeric value is undefined or unrepresentable due to a floating point processing error.
`http://terminology.hl7.org/CodeSystem/data-absent-reason`	4.0.1	not-applicable	Not Applicable	There is no proper value for this element (e.g. last menstrual period for a male).
`http://terminology.hl7.org/CodeSystem/data-absent-reason`	4.0.1	not-permitted	Not Permitted	The value is not permitted in this context (e.g. due to profiles, or the base data types).
`http://terminology.hl7.org/CodeSystem/data-absent-reason`	4.0.1	unknown	Unknown	The value is expected to exist but is not known.