<status value="draft" /> <experimental value="false" /> <date value="2025-09-01T22:37:16.537803+10:00" /> <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 extension represents Appointment.class from http://hl7.org/fhir/StructureDefinition/Appointment|5.0.0 for use in FHIR R4." /> <jurisdiction> <coding> <system value="http://unstats.un.org/unsd/methods/m49/m49.htm" /> <code value="001" /> <display value="World" /> </coding> </jurisdiction> <fhirVersion value="4.0.1" /> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="Appointment" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension|4.0.1" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <short value="Classification when becoming an encounter" /> <definition value="Concepts representing classification of patient encounter such as ambulatory (outpatient), inpatient, emergency, home health or others due to local variations." /> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <max value="0" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="http://hl7.org/fhir/5.0/StructureDefinition/extension-Appointment.class" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <short value="Classification when becoming an encounter" /> <definition value="Concepts representing classification of patient encounter such as ambulatory (outpatient), inpatient, emergency, home health or others due to local variations." /> <type> <code value="CodeableConcept" /> </type> <binding> <strength value="preferred" /> <description value="Classification of the encounter." /> <valueSet value="http://terminology.hl7.org/ValueSet/encounter-class" /> </binding> </element> </differential> </StructureDefinition>