MSH-10

HL7 v2 control field, request/response correlation.

Definition

MSH-10 holds an identifier the sending application assigns to uniquely identify the message. The receiving system echoes it back in the MSA-2 field of the message acknowledgment (MSA) segment, allowing the response to be correlated with the original message.

Origin

Defined in Chapter 2 (Control) of the HL7 Version 2.x Messaging Standard, published by Health Level Seven International (HL7).

Example in context

MSH|...|MSG00001|... then in reply MSA|AA|MSG00001

Related terms

• HL7 MSA — segment that echoes MSH-10 in MSA-2.