<status value="draft"/><date value="2014-04-21"/><publisher value="Health Level Seven International (Orders and Observations)"/><contact><telecom><system value="url"/><value value="http://hl7.org"/></telecom></contact><description value="Allows expressing the value set that must be stored internally by the system (as distinct from the base value set which defines values for exchange)."/><fhirVersion value="3.5.0"/><mapping><identity value="v2"/><uri value="http://hl7.org/v2"/><name value="HL7 v2 Mapping"/></mapping><mapping><identity value="rim"/><uri value="http://hl7.org/v3"/><name value="RIM Mapping"/></mapping><mapping><identity value="iso11179"/><uri value="http://metadata-standards.org/11179/"/><name value="ISO 11179"/></mapping><kind value="complex-type"/><abstract value="false"/><context><type value="element"/><expression value="StructureDefinition.snapshot.element.binding.valueSet"/></context><context><type value="element"/><expression value="StructureDefinition.differential.element.binding.valueSet"/></context><context><type value="element"/><expression value="Questionnaire.item.answerValueSet"/></context><type value="Extension"/><baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension"/><derivation value="constraint"/><snapshot><element id="Extension"><path value="Extension"/><short value="Permitted values"/><definition value="Allows expressing the value set that must be stored internally by the system (as distinct from the base value set which defines values for exchange)."/><comment value="The permitted value set must have a 1..1 set of codes for each code in the value meaning value set."/><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="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="Extension"/></constraint><isModifier value="false"/><mapping><identity value="v2"/><map value="N/A"/></mapping><mapping><identity value="rim"/><map value="N/A"/></mapping><mapping><identity value="iso11179"/><map value="Data_Element.data_element_domain.member"/></mapping></element><element id="Extension.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="1"/></base><type><code value="string"/></type><isModifier value="false"/><isSummary value="false"/><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="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><isModifier value="false"/><isSummary value="false"/></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><code value="uri"/></type><fixedUri value="http://hl7.org/fhir/StructureDefinition/11179-permitted-value-valueset"/><isModifier value="false"/><isSummary value="false"/><mapping><identity value="rim"/><map value="N/A"/></mapping></element><element id="Extension.valueCanonical"><path value="Extension.valueCanonical"/><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="0"/><max value="1"/><base><path value="Extension.value[x]"/><min value="0"/><max value="1"/></base><type><code value="canonical"/><targetProfile value="http://hl7.org/fhir/StructureDefinition/ValueSet"/></type><isModifier value="false"/><isSummary value="false"/><mapping><identity value="rim"/><map value="N/A"/></mapping></element></snapshot><differential><element id="Extension"><path value="Extension"/><short value="Permitted values"/><definition value="Allows expressing the value set that must be stored internally by the system (as distinct from the base value set which defines values for exchange)."/><comment value="The permitted value set must have a 1..1 set of codes for each code in the value meaning value set."/><min value="0"/><max value="1"/><mapping><identity value="v2"/><map value="N/A"/></mapping><mapping><identity value="rim"/><map value="N/A"/></mapping><mapping><identity value="iso11179"/><map value="Data_Element.data_element_domain.member"/></mapping></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/11179-permitted-value-valueset"/></element><element id="Extension.valueCanonical"><path value="Extension.valueCanonical"/><type><code value="canonical"/><targetProfile value="http://hl7.org/fhir/StructureDefinition/ValueSet"/></type></element></differential></StructureDefinition>