The Point-of-Service system is a trusted application known by the HIE and it is registered with the interoperability layer to be able to send and receive data securely (Common message security workflow).
The Patient to be updated is assumed to already exist in the Client Registry.
PoS - The point of care system that captures patient identifiers, is responsible for sending the identifiers to the HIE.
IL - Mediates the transactions between the PoS system and the Client Registry.
CR - Manages patient demographics and identifier details.
The following is a description of the interaction steps.
The format of the message is specified by the ITI-8 IHE PIX v2 transaction and takes the form of an HL7v2.3.1 A08 message. The message may include both identifiers and demographic attributes for the patient to be updated.