ADT^A42: Merge visit - visit number

Merges visit numbers: MRG carries the visit number being retired.

Message type

ADT · ADT message

Trigger event

A42

Message structure

ADT_A39 · per HL7's current table 0354; older versions sometimes paired events differently

In MSH-9

ADT^A42^ADT_A39

Response

ACK · General acknowledgment message

Other events with the ADT_A39 structure

• ADT^A39 Merge person - patient ID
• ADT^A40 Merge patient - patient identifier list
• ADT^A41 Merge account - patient account number

Source: HL7 Terminology (THO) 7.4.0, published by HL7 International under CC0. Check your trading partner's specification for the values they actually send.