Beginning of clinical encounter (Basic)

{
  "resourceType" : "SubscriptionTopic",
  "id" : "admission-basic",
  "extension" : [{
    "url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
    "valueCode" : "fhir"
  }],
  "url" : "http://example.org/FHIR/SubscriptionTopic/admission-basic",
  "identifier" : [{
    "system" : "urn:ietf:rfc:3986",
    "value" : "urn:uuid:0b67b140-59d0-4c49-9fe8-b62f7fcf4eb9"
  }],
  "title" : "admission-basic",
  "status" : "active",
  "publisher" : "HL7 International / FHIR Infrastructure",
  "contact" : [{
    "telecom" : [{
      "system" : "url",
      "value" : "http://www.hl7.org/Special/committees/fiwg"
    }]
  }],
  "description" : "Example admission topic using a Basic resource",
  "trigger" : [{
    "description" : "Basic Resource Admission being created or updated into an `in-progress` state",
    "resource" : "http://hl7.org/fhir/StructureDefinition/Basic",
    "supportedInteraction" : ["create",
    "update"],
    "queryCriteria" : {
      "previous" : "code=Admission&admission-status:not=in-progress",
      "resultForCreate" : "test-passes",
      "current" : "code=Admission&admission-status=in-progress",
      "resultForDelete" : "test-fails",
      "requireBoth" : true
    },
    "fhirPathCriteria" : "(%previous.id.empty() or (%previous.extension('status') != 'in-progress')) and (%current.extension('status') = 'in-progress')",
    "event" : {
      "coding" : [{
        "system" : "http://terminology.hl7.org/CodeSystem/v2-0003",
        "code" : "A01",
        "display" : "ADT/ACK - Admit/visit notification"
      }]
    },
    "canFilterBy" : [{
      "description" : "Matching based on the Patient. Input is expected to be a search `reference` and match against a reference to the patient.",
      "resource" : "Basic",
      "filterParameter" : "admission-patient",
      "filterDefinition" : "http://example.org/SearchParameters/Basic/admission-patient"
    },
    {
      "description" : "Matching based on the Patient Group. Input is expected to be a search `reference` and match against a reference to a group the patient has membership in.",
      "resource" : "Basic",
      "filterParameter" : "admission-patient-group",
      "filterDefinition" : "http://example.org/SearchParameters/Basic/admission-patient-group"
    }],
    "notificationShape" : [{
      "resource" : "Basic",
      "include" : ["Basic:admission-patient",
      "Basic:admission-patient-group",
      "Basic:admission-diagnosis"]
    }]
  }]
}