An A30 event can be used to merge person information on an MPI. The A34, A35, A36, A40, A41 and A42 events should be used to merge patient information for a current episode. The "incorrect MRN" identified on the MRG segment (MRG-1-prior patient ID-internal) is to be merged with the "correct MRN" identified on the PID segment (PID-3patient ID (internal ID)). The "incorrect MRN" then no longer exists. All PID data associated with the "correct MRN" are treated as updated information.
The MRNs involved may or may not have active or inactive cases associated with them. Any episode of care that was previously associated with the "incorrect MRN" is now associated with the "correct MRN." A list of these cases is not provided.
The fields, included when this message is sent, should be the fields pertinent to communicate this event. When other important fields change it is recommended that the A08 (update patient information) event be used instead.
An A30, merge person information, is intended for merging person records without merging patient identifiers.
ADT ADT Message Chapter
MSH Message Header 2
EVN Event Type 3
PID Patient Identification 3
[PD1] Additional Demographics 3
MRG Merge Information 3
ACK General Acknowledgment Chapter
MSH Message Header 2
MSA Message Acknowledgment 2
[ ERR ] Error 2