OSU^O51: OSU – Order Status Update

OSU – Order Status Update. It's sent as an OSU message (Order status update) with the OSU_O51 message structure.

Message type

OSU · Order status update

Trigger event

O51

Message structure

OSU_O51 · per HL7's current table 0354; older versions sometimes paired events differently

In MSH-9

OSU^O51^OSU_O51

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.