<?xml version="1.0" encoding="UTF-8"?><StructureDefinition xmlns="http://hl7.org/fhir"><id value="observation-focal-subject"/><url value="http://hl7.org/fhir/StructureDefinition/observation-focal-subject"/><name value="Focal Subject"/><display value="Focal Subject"/><status value="draft"/><publisher value="Health Level Seven, Inc. - FHIR WG"/><contact><telecom><system value="other"/><value value="HL7"/></telecom></contact><date value="2015-03-02"/><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="1.6.0"/><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"/><snapshot><element id="Extension:focalsubject"><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."/><comments 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"/><base><path value="Extension"/><min value="0"/><max value="*"/></base><condition value="ele-1"/><constraint><key value="ele-1"/><severity value="error"/><human value="All FHIR elements must have a @value or children"/><expression value="children().count() &gt; id.count()"/><xpath value="@value|f:*|h:div"/></constraint><constraint><key value="ext-1"/><severity value="error"/><human value="Must have either extensions or value[x], not both"/><expression value="extension.exists() != value.exists()"/><xpath value="exists(f:extension)!=exists(f:*[starts-with(local-name(.), &#39;value&#39;)])"/></constraint><isModifier value="true"/></element><element id="Extension:focalsubject.id"><path value="Extension.id"/><representation value="xmlAttr"/><short value="xml:id (or equivalent in JSON)"/><definition value="unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/><min value="0"/><max value="1"/><base><path value="Element.id"/><min value="0"/><max value="*"/></base><type><code value="string"/></type><mapping><identity value="rim"/><map value="n/a"/></mapping></element><element id="Extension:focalsubject.extension:extension"><path value="Extension.extension"/><name value="extension"/><short value="Extension"/><definition value="An Extension"/><min value="0"/><max value="0"/><base><path value="Element.extension"/><min value="0"/><max value="*"/></base><type><code value="Extension"/></type></element><element id="Extension:focalsubject.url"><path value="Extension.url"/><representation value="xmlAttr"/><short value="identifies the meaning of the extension"/><definition value="Source of the definition for the extension code - a logical name or a URL."/><comments value="The definition may point directly to a computable or human-readable definition of the extensibility codes, or it may be a logical URI as declared in some other specification. The definition SHALL be a URI for the Structure Definition defining the extension."/><min value="1"/><max value="1"/><base><path value="Extension.url"/><min value="1"/><max value="1"/></base><type><code value="uri"/></type><fixedUri value="http://hl7.org/fhir/StructureDefinition/observation-focal-subject"/><mapping><identity value="rim"/><map value="N/A"/></mapping></element><element id="Extension:focalsubject.valueCodeableConcept"><path value="Extension.valueCodeableConcept"/><short value="Value of extension"/><definition value="Value of extension - may be a resource or one of a constrained set of the data types (see Extensibility in the spec for list)."/><min value="1"/><max value="1"/><base><path value="Extension.value[x]"/><min value="0"/><max value="1"/></base><type><code value="CodeableConcept"/></type><binding><strength value="example"/><description value="codes for observation targets.  Derived from from both HL7 v3 and SNOMED CT code systems"/><valueSetReference><reference value="http://hl7.org/fhir/ValueSet/focal-subject"/></valueSetReference></binding><mapping><identity value="rim"/><map value="N/A"/></mapping></element></snapshot><differential><element id="Extension:focalsubject"><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."/><comments 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:focalsubject.extension:extension"><path value="Extension.extension"/><name value="extension"/><max value="0"/></element><element id="Extension:focalsubject.url"><path value="Extension.url"/><type><code value="uri"/></type><fixedUri value="http://hl7.org/fhir/StructureDefinition/observation-focal-subject"/></element><element id="Extension:focalsubject.value[x]"><path value="Extension.value[x]"/><min value="1"/><type><code value="CodeableConcept"/></type><binding><strength value="example"/><description value="codes for observation targets.  Derived from from both HL7 v3 and SNOMED CT code systems"/><valueSetReference><reference value="http://hl7.org/fhir/ValueSet/focal-subject"/></valueSetReference></binding></element></differential></StructureDefinition>