ACK_A46
3.2.46 ADT/ACK - change external ID (event A46)
3 segments
A change has been done at the external identifier level. That is, a PID-2-patient ID (external ID) has been found to be incorrect and has been changed.
An A46 event is used to signal a change of an incorrectly assigned external ID value. The "incorrect source external ID" value is stored in the MRG segment (MRG-4-prior patient ID-external) and is to be changed to the "correct target external ID" value stored in the PID segment (PID-2-patient ID-external).
Message Structure
3 segments
R RequiredO Optional Choice
MSH
R1MSA
R1ERR
O1