<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="https://example.org/fhir/StructureDefinition/Triage" />
  <name value="Triage" />
  <status value="draft" />
  <fhirVersion value="4.0.1" />
  <kind value="complex-type" />
  <abstract value="false" />
  <context>
    <type value="element" />
    <expression value="Encounter" />
  </context>
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <short value="Triage" />
      <definition value="Differenzia gli accessi in PS dalla gravità." />
      <min value="1" />
      <max value="1" />
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="https://example.org/fhir/StructureDefinition/Triage" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <type>
        <code value="Coding" />
      </type>
    </element>
    <element id="Extension.value[x].system">
      <path value="Extension.value[x].system" />
      <fixedUri value="http://eng.it/FHIR/CodeSystem/triage" />
    </element>
    <element id="Extension.value[x].code">
      <path value="Extension.value[x].code" />
      <binding>
        <strength value="required" />
        <description value="Colori accesso triage" />
        <valueSet value="http://eng.it/FHIR/ValueSet/triage" />
      </binding>
    </element>
  </differential>
</StructureDefinition>