<status value="draft" /> <date value="2015-03-02" /> <publisher value="Health Level Seven, Inc. - OO WG" /> <contact> <telecom> <system value="url" /> <value value="http://hl7.org/special/committees/orders" /> </telecom> </contact> <description value="A code representing the focus of an observation when the focus is not the patient of record. In other words, the focus of the observation is different from `Observation.subject`. An example use case would be using the *Observation* resource to capture whether the mother is trained to change her child's tracheostomy tube. In this example, the child is the patient of record and the mother is focal subject referenced using this extension. Other example focal subjects include spouses, related persons, feti, or donors." /> <fhirVersion value="4.6.0" /> <mapping> <identity value="rim" /> <uri value="http://hl7.org/v3" /> <name value="RIM Mapping" /> </mapping> <kind value="complex-type" /> <abstract value="false" /> <context> <type value="element" /> <expression value="Observation" /> </context> <type value="Extension" /> <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" /> <derivation value="constraint" /> <snapshot> <element id="Extension"> <path value="Extension" /> <short value="Focus Code" /> <definition value="A code representing the focus of an observation when the focus is not the patient of record. In other words, the focus of the observation is different from `Observation.subject`. An example use case would be using the *Observation* resource to capture whether the mother is trained to change her child's tracheostomy tube. In this example, the child is the patient of record and the mother is focal subject referenced using this extension. Other example focal subjects include spouses, related persons, feti, or donors." /> <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" /> <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="hasValue() or (children().count() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </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(.), 'value')])" /> <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> </constraint> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> <element id="Extension.id"> <path value="Extension.id" /> <representation value="xmlAttr" /> <short value="Unique id for inter-element referencing" /> <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="1" /> </base> <type> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"> <valueUrl value="string" /> </extension> <code value="http://hl7.org/fhirpath/System.String" /> </type> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <slicing> <discriminator> <type value="value" /> <path value="url" /> </discriminator> <description value="Extensions are always sliced by (at least) url" /> <rules value="open" /> </slicing> <short value="Additional content defined by implementations" /> <definition value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and manageable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension." /> <comment value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone." /> <alias value="extensions" /> <alias value="user content" /> <min value="0" /> <max value="0" /> <base> <path value="Element.extension" /> <min value="0" /> <max value="*" /> </base> <type> <code value="Extension" /> </type> <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="hasValue() or (children().count() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </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(.), 'value')])" /> <source value="http://hl7.org/fhir/StructureDefinition/Extension" /> </constraint> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> <element id="Extension.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." /> <comment 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> <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type"> <valueUrl value="uri" /> </extension> <code value="http://hl7.org/fhirpath/System.String" /> </type> <fixedUri value="http://hl7.org/fhir/StructureDefinition/observation-focusCode" /> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <short value="Value of extension" /> <definition value="Value of extension - must be one of a constrained set of the data types (see [Extensibility](extensibility.html) for a 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> <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="hasValue() or (children().count() > id.count())" /> <xpath value="@value|f:*|h:div" /> <source value="http://hl7.org/fhir/StructureDefinition/Element" /> </constraint> <binding> <extension url="http://hl7.org/fhir/build/StructureDefinition/definition"> <valueString value="Codes for observation targets. Derived from both HL7 v3 and SNOMED CT code systems." /> </extension> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="FocusCode" /> </extension> <strength value="example" /> <description value="Derived from both HL7 v3 and SNOMED CT code systems" /> <valueSet value="http://hl7.org/fhir/ValueSet/focal-subject" /> </binding> <mapping> <identity value="rim" /> <map value="n/a" /> </mapping> <mapping> <identity value="rim" /> <map value="N/A" /> </mapping> </element> </snapshot> <differential> <element id="Extension"> <path value="Extension" /> <short value="Focus Code" /> <definition value="A code representing the focus of an observation when the focus is not the patient of record. In other words, the focus of the observation is different from `Observation.subject`. An example use case would be using the *Observation* resource to capture whether the mother is trained to change her child's tracheostomy tube. In this example, the child is the patient of record and the mother is focal subject referenced using this extension. Other example focal subjects include spouses, related persons, feti, or donors." /> <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" /> </element> <element id="Extension.extension"> <path value="Extension.extension" /> <max value="0" /> </element> <element id="Extension.url"> <path value="Extension.url" /> <fixedUri value="http://hl7.org/fhir/StructureDefinition/observation-focusCode" /> </element> <element id="Extension.value[x]"> <path value="Extension.value[x]" /> <min value="1" /> <type> <code value="CodeableConcept" /> </type> <binding> <extension url="http://hl7.org/fhir/build/StructureDefinition/definition"> <valueString value="Codes for observation targets. Derived from both HL7 v3 and SNOMED CT code systems." /> </extension> <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName"> <valueString value="FocusCode" /> </extension> <strength value="example" /> <description value="Derived from both HL7 v3 and SNOMED CT code systems" /> <valueSet value="http://hl7.org/fhir/ValueSet/focal-subject" /> </binding> </element> </differential> </StructureDefinition>