<StructureDefinition xmlns="http://hl7.org/fhir">
  <meta>
    <lastUpdated value="2019-03-12T18:10:05.2734315+00:00" />
  </meta>
  <url value="http://hl7.org/fhir/StructureDefinition/observation-eventTiming" />
  <name value="request-eventTiming" />
  <status value="draft" />
  <date value="2019-03-12T18:10:05.0780542+00:00" />
  <description value="OLIS has additional values P and T for RequestPriority. Extension is added for P and T values" />
  <purpose value="OLIS uses HL7 extension for the requestPriority (ProcedureRequest resource) to cover to additional OLIS values P and T." />
  <fhirVersion value="3.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <contextType value="resource" />
  <context value="ProcedureRequest" />
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <definition value="The extension used for P Preoperative (to be done prior to surgery) and T Timing critical (do as near as possible to requested time) codes" />
      <mustSupport value="false" />
    </element>
    <element id="Extension.extension">
      <path value="Extension.extension" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="url" />
        </discriminator>
        <rules value="open" />
      </slicing>
    </element>
    <element id="Extension.extension:code">
      <path value="Extension.extension" />
      <sliceName value="code" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:code.url">
      <path value="Extension.extension.url" />
      <fixedUri value="code" />
    </element>
    <element id="Extension.extension:code.value[x]:valueCodeableConcept">
      <path value="Extension.extension.valueCodeableConcept" />
      <sliceName value="valueCodeableConcept" />
      <type>
        <code value="CodeableConcept" />
      </type>
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:code.value[x]:valueCodeableConcept.coding">
      <path value="Extension.extension.valueCodeableConcept.coding" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:code.value[x]:valueCodeableConcept.coding.code">
      <path value="Extension.extension.valueCodeableConcept.coding.code" />
      <min value="1" />
      <fixedCode value="Can be P or T values" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:offset">
      <path value="Extension.extension" />
      <sliceName value="offset" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:offset.url">
      <path value="Extension.extension.url" />
      <fixedUri value="offset" />
    </element>
    <element id="Extension.extension:offset.value[x]:valueQuantity">
      <path value="Extension.extension.valueQuantity" />
      <sliceName value="valueQuantity" />
      <type>
        <code value="Quantity" />
      </type>
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:offset.value[x]:valueQuantity.value">
      <path value="Extension.extension.valueQuantity.value" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.extension:offset.value[x]:valueQuantity.unit">
      <extension url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
        <valueBoolean value="true" />
      </extension>
      <path value="Extension.extension.valueQuantity.unit" />
      <short value="Unit representation (seconds, minutes, hours. days and etc..)" />
      <mustSupport value="true" />
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="http://hl7.org/fhir/StructureDefinition/observation-eventTiming" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <max value="0" />
    </element>
  </differential>
</StructureDefinition>