<StructureDefinition xmlns="http://hl7.org/fhir">
  <url value="https://example.org/fhir/StructureDefinition/PH_Appointment" />
  <name value="PH_Appointment" />
  <status value="draft" />
  <fhirVersion value="4.0.1" />
  <kind value="resource" />
  <abstract value="false" />
  <type value="Appointment" />
  <baseDefinition value="http://hl7.org/fhir/StructureDefinition/Appointment" />
  <derivation value="constraint" />
  <differential>
    <element id="Appointment.identifier">
      <path value="Appointment.identifier" />
      <max value="0" />
    </element>
    <element id="Appointment.cancelationReason">
      <path value="Appointment.cancelationReason" />
      <max value="0" />
    </element>
    <element id="Appointment.serviceCategory">
      <path value="Appointment.serviceCategory" />
      <max value="0" />
    </element>
    <element id="Appointment.serviceType">
      <path value="Appointment.serviceType" />
      <max value="0" />
    </element>
    <element id="Appointment.specialty">
      <path value="Appointment.specialty" />
      <max value="0" />
    </element>
    <element id="Appointment.appointmentType">
      <path value="Appointment.appointmentType" />
      <max value="0" />
    </element>
    <element id="Appointment.reasonCode">
      <path value="Appointment.reasonCode" />
      <max value="0" />
    </element>
    <element id="Appointment.reasonReference">
      <path value="Appointment.reasonReference" />
      <max value="0" />
    </element>
    <element id="Appointment.priority">
      <path value="Appointment.priority" />
      <max value="0" />
    </element>
    <element id="Appointment.description">
      <path value="Appointment.description" />
      <max value="0" />
    </element>
    <element id="Appointment.supportingInformation">
      <path value="Appointment.supportingInformation" />
      <max value="0" />
    </element>
    <element id="Appointment.end">
      <path value="Appointment.end" />
      <max value="0" />
    </element>
    <element id="Appointment.minutesDuration">
      <path value="Appointment.minutesDuration" />
      <max value="0" />
    </element>
    <element id="Appointment.slot">
      <path value="Appointment.slot" />
      <max value="0" />
    </element>
    <element id="Appointment.created">
      <path value="Appointment.created" />
      <max value="0" />
    </element>
    <element id="Appointment.comment">
      <path value="Appointment.comment" />
      <max value="0" />
    </element>
    <element id="Appointment.patientInstruction">
      <path value="Appointment.patientInstruction" />
      <max value="0" />
    </element>
    <element id="Appointment.basedOn">
      <path value="Appointment.basedOn" />
      <max value="0" />
    </element>
    <element id="Appointment.participant">
      <path value="Appointment.participant" />
      <max value="1" />
    </element>
    <element id="Appointment.requestedPeriod">
      <path value="Appointment.requestedPeriod" />
      <max value="1" />
    </element>
  </differential>
</StructureDefinition>