<status value="draft" /> <experimental value="true" /> <date value="2025-08-18" /> <publisher value="NHS Wales" /> <contact> <name value="FHIR Standards" /> <telecom> <system value="email" /> <value value="fhir.standards@wales.nhs.uk" /> <use value="work" /> <rank value="1" /> </telecom> </contact> <description value="This extension shows document attributes." /> <purpose value="This extension shows document attributes." /> <copyright value="2025 NHS Wales" /> <fhirVersion value="4.0.1" /> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="DocumentReference" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <short value="Additional metadata for the document" /> <definition value="Additional metadata as applicable to the document type. This element should be used with care to avoid a proliferation of undefined metadata." /> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <requirements value="Included for legacy data not explicitly handled via DocumentReference and related resources." /> <min value="1" /> </element> <element id="Extension.extension:attributeName"> <path value="Extension.extension" /> <sliceName value="attributeName" /> <short value="The name code for the document attribute." /> <definition value="A formal descriptive code for the document attribute e.g. ShareWithReferrer." /> <min value="1" /> <max value="1" /> </element> <element id="Extension.extension:attributeName.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:attributeName.url"> <path value="Extension.extension.url" /> <fixedUri value="attributeName" /> </element> <element id="Extension.extension:attributeName.value[x]"> <path value="Extension.extension.value[x]" /> <type> <code value="code" /> </type> <binding> <strength value="required" /> <description value="User-readable semantic codes for allowed attributes. Based on document metadata data held as document attributes in the Welsh Care Records Service and not represented via dedicated elements." /> <valueSet value="https://fhir.nhs.wales/ValueSet/FHIRStandardsWales-DocumentAttribute" /> </binding> </element> <element id="Extension.extension:attributeValue"> <path value="Extension.extension" /> <sliceName value="attributeValue" /> <short value="The value recorded against the document attribute." /> <definition value="The value recorded against the document attribute. This is modelled as a string format for flexibility. The actual datatype of the value will depend upon the specific document attribute. For example some may be dates, other integers and others a fixed list of codes." /> <max value="1" /> </element> <element id="Extension.extension:attributeValue.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:attributeValue.url"> <path value="Extension.extension.url" /> <fixedUri value="attributeValue" /> </element> <element id="Extension.extension:attributeValue.value[x]"> <path value="Extension.extension.value[x]" /> <min value="1" /> <type> <code value="string" /> </type> </element> <element id="Extension.extension:attributeNamespace"> <path value="Extension.extension" /> <sliceName value="attributeNamespace" /> <sliceIsConstraining value="false" /> <short value="The namespace associated with the document attribute value." /> <definition value="The namespace associated with the document attribute value where relevant for the specific document attribute. Note that for some attributes namespace may vary according to value domain." /> <max value="1" /> </element> <element id="Extension.extension:attributeNamespace.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:attributeNamespace.url"> <path value="Extension.extension.url" /> <fixedUri value="attributeNamespace" /> </element> <element id="Extension.extension:attributeNamespace.value[x]"> <path value="Extension.extension.value[x]" /> <type> <code value="string" /> </type> </element> <element id="Extension.extension:valueDomain"> <path value="Extension.extension" /> <sliceName value="valueDomain" /> <short value="The specific domain to which the value of the document attribute belongs." /> <definition value="Some document attributes contain different sets of values for a pre-defined set of domains. In this case, the value domain provides the context for the value, to provide an unambiguous meaning." /> <max value="1" /> </element> <element id="Extension.extension:valueDomain.extension"> <path value="Extension.extension.extension" /> <max value="0" /> </element> <element id="Extension.extension:valueDomain.url"> <path value="Extension.extension.url" /> <fixedUri value="valueDomain" /> </element> <element id="Extension.extension:valueDomain.value[x]"> <path value="Extension.extension.value[x]" /> <type> <code value="string" /> </type> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="https://fhir.nhs.wales/StructureDefinition/Extension-DataStandardsWales-DocumentAttribute" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <max value="0" /> <type> <code value="string" /> </type> </element> </differential> </StructureDefinition>