<status value="active"/> <publisher value="HL7 International / FHIR Infrastructure"/> <contact> <telecom> <system value="url"/> <value value="http://www.hl7.org/Special/committees/fiwg"/> </telecom> </contact> <description value="Example admission topic using a Parameters representation"/> <trigger> <description value="Patient admission or visit begins."/> <resource value="Parameters"/> <supportedInteraction value="create"/> <supportedInteraction value="update"/> <event> <coding> <system value="http://terminology.hl7.org/CodeSystem/v2-0003"/> <code value="A01"/> <display value="ADT/ACK - Admit/visit notification"/> </coding> </event> <canFilterBy> <description value="Matching based on the Patient MRN, expected to be in a `part` named `mrn` and contain a `string` value, matched using `token` search rules."/> <resource value="Parameters"/> <filterParameter value="MRN"/> </canFilterBy> <notificationShape> <resource value="Parameters"/> </notificationShape> </trigger> </SubscriptionTopic>