ADT_A46
3.2.46 ADT/ACK - change patient ID (event A46)
5 segments
With HL7 v2.3.1, event A46 is being retained for backward compatibility, corresponding with PID-2-patient ID, which is also retained for backward compatibility. Event A47 (change patient identifier list) should be used instead. A change has been done at the external identifier level. That is, a PID-2-patient ID has been found to be incorrect and has been changed.
An A46 event is used to signal a change of an incorrectly assigned PID-2-patient ID value. The "incorrect source patient ID" value is stored in the MRG segment (MRG-4-prior patient ID) and is to be changed to the "correct target patient ID" value stored in the PID segment (PID-2-patient ID).
Message Structure
5 segments
R RequiredO Optional Choice
MSH
R1EVN
R1PID
R1PD1
O1MRG
R1