<status value="active" /> <date value="2024-05-11T07:38:08.155878+00:00" /> <fhirVersion value="5.0.0" /> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="MedicationRequest" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <short value="联合用药标志" /> <max value="1" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="http://hl7.org.cn/fhir/StructureDefinition/extension-combination-drug" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <type> <code value="boolean" /> </type> </element> </differential> </StructureDefinition>