<status value="active" /> <description value="Smoking Status Observation Profile inherits from the FHIR [Observation](https://hl7.org/fhir/R4/observation.html) resource; refer to it for scope and usage definitions. This profile meets the requirements of the U.S. Core Data for Interoperability (USCDI) *Smoking Status* Data Element. This profile sets minimum expectations for the Observation resource to record, search, and fetch smoking status data associated with a patient. It specifies which core elements, extensions, vocabularies, and value sets **SHALL** be present in the resource and constrains how the elements are used. Providing the floor for standards development for specific use cases promotes interoperability and adoption." /> <fhirVersion value="4.0.1" /> <kind value="resource" /> <abstract value="false" /> <type value="Observation" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Observation" /> <derivation value="constraint" /> <differential> <element id="Observation.status"> <path value="Observation.status" /> <short value="final | entered-in-error" /> <mustSupport value="true" /> </element> <element id="Observation.category"> <path value="Observation.category" /> <slicing> <discriminator> <type value="pattern" /> <path value="$this" /> </discriminator> <rules value="open" /> </slicing> <min value="1" /> <mustSupport value="true" /> </element> <element id="Observation.category:SocialHistory"> <path value="Observation.category" /> <sliceName value="SocialHistory" /> <min value="1" /> <max value="1" /> <patternCodeableConcept> <coding> <system value="http://terminology.hl7.org/CodeSystem/observation-category" /> <code value="social-history" /> <display value="Social History" /> </coding> </patternCodeableConcept> <mustSupport value="true" /> </element> <element id="Observation.code"> <path value="Observation.code" /> <short value="Smoking Status" /> <patternCodeableConcept> <coding> <system value="http://loinc.org" /> <code value="72166-2" /> <display value="Tobacco smoking status" /> </coding> </patternCodeableConcept> <mustSupport value="true" /> <binding> <strength value="required" /> <valueSet value="http://hl7.org/fhir/ValueSet/observation-codes" /> </binding> </element> <element id="Observation.subject"> <path value="Observation.subject" /> <min value="1" /> <type> <code value="Reference" /> <targetProfile value="http://ontariohealth.ca/fhir/ehr/StructureDefinition/profile-patient" /> </type> <mustSupport value="true" /> </element> <element id="Observation.effective[x]"> <path value="Observation.effective[x]" /> <min value="1" /> <type> <code value="dateTime" /> </type> <type> <code value="Period" /> </type> <mustSupport value="true" /> </element> <element id="Observation.value[x]"> <path value="Observation.value[x]" /> <slicing> <discriminator> <type value="type" /> <path value="$this" /> </discriminator> <rules value="open" /> </slicing> <min value="1" /> <type> <code value="Quantity" /> </type> <type> <code value="CodeableConcept" /> </type> <mustSupport value="true" /> </element> <element id="Observation.value[x]:valueQuantity"> <path value="Observation.value[x]" /> <sliceName value="valueQuantity" /> <short value="Quantitative Response" /> <min value="0" /> <max value="1" /> <type> <code value="Quantity" /> </type> <mustSupport value="true" /> <binding> <strength value="required" /> <valueSet value="http://terminology.hl7.org/ValueSet/v3-UnitsOfMeasureCaseSensitive" /> </binding> </element> <element id="Observation.value[x]:valueCodeableConcept"> <path value="Observation.value[x]" /> <sliceName value="valueCodeableConcept" /> <short value="Coded Response" /> <min value="0" /> <max value="1" /> <type> <code value="CodeableConcept" /> </type> <mustSupport value="true" /> <binding> <strength value="extensible" /> <description value="Smoking status comprehensive" /> <valueSet value="http://ontariohealth.ca/fhir/ocre/ValueSet/current-smoking-status" /> </binding> </element> </differential> </StructureDefinition>