MFN^M01: Master file not otherwise specified

Master file not otherwise specified. It's sent as a MFN message (Master files notification) with the MFN_M01 message structure.

Message type

MFN · Master files notification

Trigger event

M01

Message structure

MFN_M01 · per HL7's current table 0354; older versions sometimes paired events differently

In MSH-9

MFN^M01^MFN_M01

Response

MFK · Master files application acknowledgment

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.