<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="Comment" />
  <url value="http://nictiz.nl/fhir/StructureDefinition/Comment" />
  <version value="1.0.3" />
  <name value="Comment" />
  <title value="Comment" />
  <status value="active" />
  <publisher value="Nictiz" />
  <contact>
    <name value="Nictiz" />
    <telecom>
      <system value="url" />
      <value value="https://www.nictiz.nl" />
      <use value="work" />
    </telecom>
  </contact>
  <description value="Many Dutch Health and Care Information models (Dutch: Zorginformatiebouwsteen or zib) have a comment concept. This concept can not be mapped to all the HCIM's respective FHIR resources. This extension provides a generic method to extend profiles with a comment element." />
  <purpose value="Need to extend some FHIR resources with an additional unstructured comment value." />
  <copyright value="CC0" />
  <fhirVersion value="3.0.2" />
  <kind value="complex-type" />
  <abstract value="false" />
  <contextType value="resource" />
  <context value="*" />
  <type value="Extension" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Extension" />
  <derivation value="constraint" />
  <differential>
    <element id="Extension">
      <path value="Extension" />
      <short value="Comment" />
      <alias value="Toelichting" />
    </element>
    <element id="Extension.extension">
      <path value="Extension.extension" />
      <max value="0" />
    </element>
    <element id="Extension.url">
      <path value="Extension.url" />
      <fixedUri value="http://nictiz.nl/fhir/StructureDefinition/Comment" />
    </element>
    <element id="Extension.value[x]">
      <path value="Extension.value[x]" />
      <code>
        <system value="http://loinc.org" />
        <code value="48767-8" />
        <display value="Annotation comment [Interpretation] Narrative" />
      </code>
      <short value="Comment" />
      <alias value="Toelichting" />
      <type>
        <code value="string" />
      </type>
    </element>
  </differential>
</StructureDefinition>