The EVN segment is used to communicate necessary trigger event information to receiving applications. Valid event types for all chapters are contained in table 0003 - event type code.

Figure 3-1 EVN attributes

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C.LenElementv2.1FHIR
1..3-IDR1000300099EVN-1Event Type CodeName-
2..26-TSR1-00100EVN-2Date / time of event2recorded
3..26-TSO1-00101EVN-3Date / time planned event3-
4..3-IDO1006200102EVN-4Event Reason Code23 mappings
5..5-IDO1018800103EVN-5Operator IDNEWagent.who(Practitioner)
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