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18.4.21 ADT/ACK - Move Visit Information - Visit Number (Event A45) (3.3.45)

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 - Patient 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 of the identifiers superior to the visit number or alternate visit ID should be valued in both the MRG segment and the PID segments. In this message, the account number and PID-3 - Patient Identifier List are superior to the visit number and alternate visit ID.

See sections 3.5.2, "Merging patient/person information," and 3.5.2.1.3, "Move," for a discussion of issues related to the implementation of move messages. The fields included when this message is sent should be 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.

Segment Cardinality Implement Status
ADT^A45^ADT_A45
MSH

Message Header

[1..1] SHALL
ARV

Access Restriction

 
UAC

User Authentication Credential Segment

[0..1]  
EVN

Event Type

[1..1] SHALL
PID

Patient Identification

[1..1] SHALL
PD1

Patient Additional Demographic

[0..1]  
MERGE_INFO [1..*] SHALL
MRG

Merge Patient Information

[1..1] SHALL
PV1

Patient Visit

[1..1] SHALL

 

ADT_A45

MSH-15 MSH-16 Immediate ACK Application Ack
Blank Blank - ADT^A45^ADT_A45
NE NE - -
AL, SU, ER NE ACK^A45^ACK -
NE AL, SU, ER - ACK^A45^ACK
AL, SU, ER AL, SU, ER ACK^A45^ACK ACK^A45^ACK
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