A move has been done at the visit identifier level. That is, a PV1-19-visit number or PV1-50-alternate visit ID associated with one account identifier (PID-18-account number) has been moved to another account identifier.
An A45 event is used to signal a move of records identified by the MRG-5-prior visit number or the MRG-6-prior alternate visit ID from the "incorrect source account identifier" identified in the MRG segment (MRG-3-prior patient account number) to the "correct target account identifier" identified in the PID segment (PID-18-patient account number).
This event and the message syntax do allow for the specification of "new identifiers" (PV1-19-visit number), or PV1-50-alternate visit ID), which may be application and/or implementation specific and therefore require site negotiation.
All the identifiers superior to the visit number or alternate visit ID should be valued in both the MRG segment and the PID segment. In this message, the account number, internal ID and external ID are superior to the visit number and alternate visit ID.
See Section 3.5.2, "Merging patient/person information," for a discussion of issues related to the implementation of move messages.
The fields included when this message is sent should be only the fields pertinent to communicate this event. When demographic data in other fields change, it is recommended that the A08 (update patient information) event be used in conjunction with this message. However, all PID data associated with the "correct target visit ID" are treated as updated information.
ADT ADT Message Chapter
MSH Message Header 2
EVN Event Type 3
PID Patient Identification 3
[PD1] Additional Demographics 3
{ MRG Merge Information 3
PV1 Patient Visit 3
}
ACK General Acknowledgment Chapter
MSH Message Header 2
MSA Message Acknowledgment 2
[ ERR ] Error 2