<SearchParameter xmlns="http://hl7.org/fhir">
  <id value="ServiceEstimatedWaitingTimeSP" />
  <url value="http://omi.de/fhir/registry/SearchParameter/ServiceEstimatedWaitingTimeSP" />
  <version value="0.3.28" />
  <name value="ServiceEstimatedWaitingTimeSP" />
  <status value="active" />
  <publisher value="MOLIT gGmbH" />
  <description value="Search by the estimated waiting time in Minutes in the ServiceStatus extension." />
  <code value="estimated-waiting-time" />
  <base value="HealthcareService" />
  <type value="number" />
  <expression value="HealthcareService.extension('http://omi.de/fhir/registry/StructureDefinition/ServiceStatusExtension').extension('estimated-waiting-time').value.ofType(Quantity).value" />
</SearchParameter>