Event Type (EVN) segment — HL7v2 v2.5.1.
Communicates trigger event information. 7 fields per HL7 v2.5.1 specification.
@type t() :: %HL7v2.Segment.EVN{ date_time_planned_event: term(), event_facility: term(), event_occurred: term(), event_reason_code: term(), event_type_code: term(), extra_fields: term(), operator_id: term(), recorded_date_time: term() }