Master File Entry (MFE) segment -- HL7v2 v2.5.1.
Contains information about a single master file entry. 5 fields per HL7 v2.5.1 specification.
@type t() :: %HL7v2.Segment.MFE{ effective_date_time: term(), extra_fields: term(), mfn_control_id: term(), primary_key_value: term(), primary_key_value_type: term(), record_level_event_code: term() }