<StructureDefinition xmlns="http://hl7.org/fhir">
  <id value="el-documentreference" />
  <url value="http://fhir.essilorluxottica.com/fhir/StructureDefinition/el-documentreference" />
  <version value="1.0.0" />
  <name value="ELDocumentReference" />
  <title value="EL DocumentReference Profile" />
  <status value="draft" />
  <description value="The Profile for DocumentReference." />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="DocumentReference" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/DocumentReference" />
  <derivation value="constraint" />
  <differential>
    <element id="DocumentReference.meta.extension">
      <path value="DocumentReference.meta.extension" />
      <min value="1" />
    </element>
    <element id="DocumentReference.meta.extension:organization">
      <path value="DocumentReference.meta.extension" />
      <sliceName value="organization" />
      <min value="1" />
      <max value="1" />
      <type>
        <code value="Extension" />
        <profile value="http://fhir.essilorluxottica.com/fhir/StructureDefinition/el-meta-organization-extension" />
      </type>
    </element>
    <element id="DocumentReference.meta.tag">
      <path value="DocumentReference.meta.tag" />
      <binding>
        <strength value="required" />
        <valueSet value="http://fhir.essilorluxottica.com/fhir/ValueSet/el-metatag-vs" />
      </binding>
    </element>
    <element id="DocumentReference.status">
      <path value="DocumentReference.status" />
      <patternCode value="current" />
    </element>
    <element id="DocumentReference.docStatus">
      <path value="DocumentReference.docStatus" />
      <min value="1" />
    </element>
    <element id="DocumentReference.type">
      <path value="DocumentReference.type" />
      <min value="1" />
      <binding>
        <strength value="extensible" />
        <valueSet value="http://fhir.essilorluxottica.com/fhir/ValueSet/el-documentreference-documenttype-vs" />
      </binding>
    </element>
    <element id="DocumentReference.category">
      <path value="DocumentReference.category" />
      <patternCodeableConcept>
        <coding>
          <system value="http://fhir.essilorluxottica.com/fhir/CodeSystem/el-documentreference-category-cs" />
          <code value="document" />
        </coding>
      </patternCodeableConcept>
    </element>
    <element id="DocumentReference.subject">
      <path value="DocumentReference.subject" />
      <min value="1" />
      <type>
        <code value="Reference" />
        <targetProfile value="http://fhir.essilorluxottica.com/fhir/StructureDefinition/el-patient" />
      </type>
    </element>
    <element id="DocumentReference.date">
      <path value="DocumentReference.date" />
      <mustSupport value="true" />
    </element>
    <element id="DocumentReference.author">
      <path value="DocumentReference.author" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="DocumentReference.content">
      <path value="DocumentReference.content" />
      <max value="1" />
    </element>
    <element id="DocumentReference.content.attachment.contentType">
      <path value="DocumentReference.content.attachment.contentType" />
      <mustSupport value="true" />
    </element>
    <element id="DocumentReference.content.attachment.url">
      <path value="DocumentReference.content.attachment.url" />
      <min value="1" />
    </element>
    <element id="DocumentReference.content.attachment.title">
      <path value="DocumentReference.content.attachment.title" />
      <min value="1" />
    </element>
    <element id="DocumentReference.context.encounter">
      <path value="DocumentReference.context.encounter" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
    <element id="DocumentReference.context.related">
      <path value="DocumentReference.context.related" />
      <max value="1" />
      <mustSupport value="true" />
    </element>
  </differential>
</StructureDefinition>