<?xml version="1.0" encoding="UTF-8"?><StructureDefinition xmlns="http://hl7.org/fhir"><id value="11179-de-effective-period"/><url value="http://hl7.org/fhir/StructureDefinition/11179-de-effective-period"/><name value="When data element is &quot;valid&quot;"/><display value="Effective time"/><status value="draft"/><publisher value="Health Level Seven International (Orders and Observations)"/><contact><telecom><system value="other"/><value value="http://hl7.org"/></telecom></contact><date value="2014-04-21"/><description value="Identifies the date on which the element became (or is expected to become) active and the date on which the element became (or is expected to become) retired."/><fhirVersion value="1.6.0"/><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"/><contextType value="resource"/><context value="DataElement"/><type value="Extension"/><baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension"/><derivation value="constraint"/><snapshot><element id="Extension:whendataelementis&quot;valid&quot;"><path value="Extension"/><short value="When data element is &quot;valid&quot;"/><definition value="Identifies the date on which the element became (or is expected to become) active and the date on which the element became (or is expected to become) retired."/><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><mapping><identity value="rim"/><map value=".effectiveTime[IVL&lt;TS&gt;]"/></mapping><mapping><identity value="iso11179"/><map value="start = Registration_State.effective_date end = Registration_State.until_date"/></mapping></element><element id="Extension:whendataelementis&quot;valid&quot;.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:whendataelementis&quot;valid&quot;.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:whendataelementis&quot;valid&quot;.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/11179-de-effective-period"/><mapping><identity value="rim"/><map value="N/A"/></mapping></element><element id="Extension:whendataelementis&quot;valid&quot;.valuePeriod"><path value="Extension.valuePeriod"/><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="Period"/></type><mapping><identity value="rim"/><map value="N/A"/></mapping></element></snapshot><differential><element id="Extension:whendataelementis&quot;valid&quot;"><path value="Extension"/><short value="When data element is &quot;valid&quot;"/><definition value="Identifies the date on which the element became (or is expected to become) active and the date on which the element became (or is expected to become) retired."/><min value="0"/><max value="1"/><mapping><identity value="rim"/><map value=".effectiveTime[IVL&lt;TS&gt;]"/></mapping><mapping><identity value="iso11179"/><map value="start = Registration_State.effective_date end = Registration_State.until_date"/></mapping></element><element id="Extension:whendataelementis&quot;valid&quot;.extension:extension"><path value="Extension.extension"/><name value="extension"/><max value="0"/></element><element id="Extension:whendataelementis&quot;valid&quot;.url"><path value="Extension.url"/><type><code value="uri"/></type><fixedUri value="http://hl7.org/fhir/StructureDefinition/11179-de-effective-period"/></element><element id="Extension:whendataelementis&quot;valid&quot;.value[x]"><path value="Extension.value[x]"/><min value="1"/><type><code value="Period"/></type></element></differential></StructureDefinition>