<status value="active" /> <date value="2018-03-20T11:00:52.49+01:00" /> <description value="This profile constrains the Observation resource to represent Tobacco use assessment in a patient summary" /> <kind value="resource" /> <abstract value="false" /> <type value="Observation" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" /> <derivation value="constraint" /> <differential> <element id="Observation"> <path value="Observation" /> <mustSupport value="true" /> </element> <element id="Observation.id"> <path value="Observation.id" /> <mustSupport value="true" /> </element> <element id="Observation.code"> <path value="Observation.code" /> <min value="1" /> <max value="1" /> <type> <code value="CodeableConcept" /> <profile value="http://hl7.org/fhir/uv/ips/StructureDefinition/CodeableConcept-uv-ips" /> </type> <patternCodeableConcept> <coding> <system value="http://loinc.org" /> <code value="72166-2" /> </coding> </patternCodeableConcept> <mustSupport value="true" /> </element> <element id="Observation.subject"> <path value="Observation.subject" /> <min value="1" /> <type> <code value="Reference" /> <targetProfile value="http://hl7.org/fhir/uv/ips/StructureDefinition/Patient-uv-ips" /> </type> <mustSupport value="true" /> </element> <element id="Observation.subject.reference"> <path value="Observation.subject.reference" /> <min value="1" /> <mustSupport value="true" /> </element> <element id="Observation.effective[x]"> <path value="Observation.effective[x]" /> <min value="1" /> <max value="1" /> <type> <code value="dateTime" /> </type> <mustSupport value="true" /> </element> <element id="Observation.effective[x]:data-absent-reason"> <path value="Observation.effective[x].extension" /> <short value="effective[x] absence reason" /> <definition value="Provides a reason why the effectiveTime is missing." /> <max value="1" /> <type> <code value="Extension" /> <profile value="http://hl7.org/fhir/StructureDefinition/data-absent-reason" /> </type> <mustSupport value="true" /> </element> <element id="Observation.valueCodeableConcept"> <path value="Observation.valueCodeableConcept" /> <type> <code value="CodeableConcept" /> <profile value="http://hl7.org/fhir/uv/ips/StructureDefinition/CodeableConcept-uv-ips" /> </type> <mustSupport value="true" /> <binding> <strength value="required" /> <valueSet value="http://hl7.org/fhir/uv/ips/ValueSet/current-smoking-status-uv-ips" /> </binding> </element> </differential> </StructureDefinition>