<SearchParameter xmlns="http://hl7.org/fhir">
  <id value="Bundle-composition-patient-birthdate" />
  <url value="http://ehealthontario.ca/fhir/SearchParameter/Bundle-composition-patient-birthdate" />
  <version value="4.0.1" />
  <name value="composition.patient.birthdate" />
  <status value="active" />
  <experimental value="false" />
  <date value="2023-10-04" />
  <publisher value="Ontario Health" />
  <contact>
    <name value="Ontario Health" />
    <telecom>
      <system value="url" />
      <value value="http://ontariohealth.ca" />
    </telecom>
  </contact>
  <description value="Search by patient birthDate" />
  <purpose value="Need to search by patient birthDate" />
  <code value="composition.patient.birthdate" />
  <base value="Bundle" />
  <type value="date" />
  <expression value="Bundle.entry.resource.ofType(Patient).birthDate" />
</SearchParameter>