<status value="draft" /> <date value="2015-03-02" /> <publisher value="Health Level Seven, Inc. - FHIR WG" /> <contact> <telecom> <system value="url" /> <value value="HL7" /> </telecom> </contact> <description value="The focus of an observation when not the patient of record (i.e. different from Observation.subject). For example, the focal subject may be a fetus, or a donor." /> <fhirVersion value="3.0.1" /> <mapping> <identity value="rim" /> <uri value="http://hl7.org/v3" /> <name value="RIM Mapping" /> </mapping> <kind value="complex-type" /> <abstract value="false" /> <contextType value="resource" /> <context value="Observation" /> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <differential> <element id="Extension"> <path value="Extension" /> <short value="Focal Subject" /> <definition value="The focus of an observation when not the patient of record (i.e. different from Observation.subject). For example, the focal subject may be a fetus, or a donor." /> <comment value="Use Observation.specimen element to describe the specimen. Only used if not implicit in code found in Observation.code." /> <min value="0" /> <max value="1" /> <isModifier value="true" /> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <max value="0" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <type> <code value="uri" /> </type> <fixedUri value="http://hl7.org/fhir/StructureDefinition/observation-focal-subject" /> </element> <element id="Extension.valueCodeableConcept"> <path value="Extension.valueCodeableConcept" /> <type> <code value="CodeableConcept" /> </type> <binding> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="FocalSubject" /> </extension> <strength value="example" /> <description value="Codes for observation targets. Derived from both HL7 v3 and SNOMED CT code systems" /> <valueSetReference> <reference value="http://hl7.org/fhir/ValueSet/focal-subject" /> </valueSetReference> </binding> </element> </differential> </StructureDefinition>