Example of an EventDefinition for monitoring emergency department admissions. (id = "example")

<?xml version="1.0" encoding="UTF-8"?>

<EventDefinition xmlns="http://hl7.org/fhir">
  <id value="example"/> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
    <valueCode value="informative"/> 
  </extension> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
    <valueInteger value="6"/> 
  </extension> 
  <extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
    <valueCode value="cds"/> 
  </extension> 
  <url value="http://hl7.org/fhir/EventDefinition/example"/> 
  <name value="EventDefinitionExample"/> 
  <title value="EventDefinition Example"/> 
  <status value="draft"/> 
  <experimental value="true"/> 
  <publisher value="HL7 International / Clinical Decision Support"/> 
  <contact> 
    <telecom> 
      <system value="url"/> 
      <value value="http://www.hl7.org/Special/committees/dss"/> 
    </telecom> 
  </contact> 
  <description value="Example of an EventDefinition for monitoring emergency department admissions."/> 
  <purpose value="Monitor all admissions to Emergency"/> 
  <trigger> 
    <type value="data-changed"/> 
    <name value="monitor-emergency-admissions"/> 
    <data> 
      <type value="Encounter"/> 
    </data> 
    <condition> 
      <description value="Encounter Location = emergency (active/completed encounters, current or previous)"/> 
      <language value="text/fhirpath"/> 
      <expression value="(%current | %previous).location.where(location = 'Location/emergency' and status
       in {'active', 'completed'}).exists()"/> 
    </condition> 
  </trigger> 
</EventDefinition>