ADT_A40 - Merge patient - patient identifier list

Segment structure for the ADT_A40 message in HL7 v2.5.1. Cardinality is shown as [min..max]; groups are in bold.

• MSH Message header [1..1]
• EVN Event type [1..1]
• PATIENT_ID Patient id [1..*]
  • PID Patient identification [1..1]
  • PD1 Patient additional demographic [0..1]
  • MRG Merge patient information [1..1]
  • PV1 Patient visit [0..1]