<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="DART-ext" />
  <url value="http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/DART-ext" />
  <name value="DART" />
  <status value="active" />
  <description value="DART stands for 'Dates Affecting Readiness to Treat' and is defined as:&#xD;&#xA;Periods of time between the Decision To Treat (DTT) and the Procedure Date when the patient is unavailable for a procedure due to patient-related reasons." />
  <fhirVersion value="4.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <context>
    <type value="element" />
    <expression value="ServiceRequest" />
  </context>
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <definition value="DART stands for 'Dates Affecting Readiness to Treat' and is defined as:&#xD;&#xA;Periods of time between the Decision To Treat (DTT) and the Procedure Date when the patient is unavailable for a procedure due to patient-related reasons." />
    </element>
    <element id="Extension.extension:StartDate">
      <path value="Extension.extension" />
      <sliceName value="StartDate" />
      <min value="0" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:StartDate.extension">
      <path value="Extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:StartDate.url">
      <path value="Extension.extension.url" />
      <fixedUri value="StartDate" />
    </element>
    <element id="Extension.extension:StartDate.value[x]">
      <path value="Extension.extension.value[x]" />
      <type>
        <code value="dateTime" />
      </type>
    </element>
    <element id="Extension.extension:EndDate">
      <path value="Extension.extension" />
      <sliceName value="EndDate" />
      <min value="0" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:EndDate.extension">
      <path value="Extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:EndDate.url">
      <path value="Extension.extension.url" />
      <fixedUri value="EndDate" />
    </element>
    <element id="Extension.extension:EndDate.value[x]">
      <path value="Extension.extension.value[x]" />
      <type>
        <code value="dateTime" />
      </type>
    </element>
    <element id="Extension.extension:DARTCodes">
      <path value="Extension.extension" />
      <sliceName value="DARTCodes" />
      <min value="0" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:DARTCodes.extension">
      <path value="Extension.extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.extension:DARTCodes.url">
      <path value="Extension.extension.url" />
      <fixedUri value="DARTCodes" />
    </element>
    <element id="Extension.extension:DARTCodes.value[x]">
      <path value="Extension.extension.value[x]" />
      <type>
        <code value="CodeableConcept" />
      </type>
      <binding>
        <strength value="extensible" />
        <valueSet value="http://fhir.infoway-inforoute.ca/io/CA-eReC/ValueSet/DARC-DART-reason" />
      </binding>
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="http://fhir.infoway-inforoute.ca/io/CA-eReC/StructureDefinition/DART-ext" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <label value="To Date" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>