Business Context > Business Model

Business Model

Context

Many organizations across the province provide health care services and contribute patient health information to Ontario’s Electronic Health Record (EHR) assets. These organizations will typically maintain a list of patients with identifiers and corresponding demographic information within their local systems to support local needs. The role of the Provincial Client Registry (PCR) is to facilitate accurate identification of patients (clients) across the different points where they receive care and to associate patient health information collected in these different places with the right patient as it is received by Ontario’s EHR services.

Model

The PCR aggregates demographic data and identifiers from the Ontario Registered Persons Database (RPDB) and participating healthcare organizations across the province to provide a comprehensive source of patient identity and demographic information. The identifiers and cross references maintained in the PCR are then used by other EHR services to associate health information with the appropriate patient and to enable healthcare provider access to a person’s complete health record. Identifier cross references and demographic data stored in the PCR are also made available to authorized health care providers through query service endpoints.

Figure below illustrates the PCR system context.

SystemContext-png

Available Functions:

The following functions are available to organizations that query and update PCR information:

Function Service Interaction
Query HL7 FHIR* - Patient EMPI Match
- Patient Search
- Patient Read
- ITI-83: mobile Patient Identity Cross-reference Query (PIXm)
HL7 V2 IHE PIX/PDQ:
- ITI-9: Patient Identity Cross-Referencing Query (PIX) and
- ITI-21: Patient Demographics Query (PDQ)
HL7 V3 Pan-Canadian:
- Find Candidates Query
- Get Client Demographics Query
- Find Associated Identifiers Query
Update HL7 V2 ADT:
        - Add, Revise, Merge, Unmerge
HL7 V3 Pan-Canadian:
       - Add, Revise (Merge, Unmerge, Delete)

*Interactions corresponding to the HL7 FHIR Query service are specified in this implementation guide.