<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="https://example.org/fhir/StructureDefinition/MyPatient" />
  <name value="MyPatient" />
  <status value="draft" />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Patient" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Patient" />
  <derivation value="constraint" />
  <differential>
    <element id="Patient.identifier">
      <path value="Patient.identifier" />
      <slicing>
        <discriminator>
          <type value="value" />
          <path value="system" />
        </discriminator>
        <rules value="open" />
      </slicing>
    </element>
    <element id="Patient.identifier:BSN">
      <path value="Patient.identifier" />
      <sliceName value="BSN" />
      <short value="BSN" />
    </element>
    <element id="Patient.identifier:BSN.system">
      <path value="Patient.identifier.system" />
      <fixedUri value="https://fhir.nl/fhir/NamingSystem/bsn" />
    </element>
    <element id="Patient.contact.extension:roleExtension">
      <path value="Patient.contact.extension" />
      <sliceName value="roleExtension" />
      <type>
        <code value="Extension" />
        <profile value="https://example.org/fhir/StructureDefinition/RoleExtension" />
      </type>
      <isModifier value="false" />
    </element>
    <element id="Patient.contact.organization">
      <path value="Patient.contact.organization" />
      <type>
        <code value="Reference" />
        <targetProfile value="https://example.org/fhir/StructureDefinition/OrganizationNL" />
      </type>
    </element>
  </differential>
</StructureDefinition>