<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="https://medico-emr.net/medico/r4/sd/ext/Observation_CancellationDate_1" />
  <name value="Observation_CancellationDate_1" />
  <status value="draft" />
  <description value="An extension to provide the cancellation date for an observation" />
  <fhirVersion value="4.0.0" />
  <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" />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <definition value="An extension to provide the cancellation date for an observation" />
    </element>
    <element id="Extension.id">
      <path value="Extension.id" />
      <max value="0" />
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedString value="https://medico-emr.net/medico/r4/sd/ext/Observation_CancellationDate_1" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <definition value="indicates the DateTime of the system when the observation was cancelled (extension not writable)" />
      <min value="1" />
      <type>
        <code value="dateTime" />
      </type>
    </element>
  </differential>
</StructureDefinition>