CH EPR mHealth (R4)
3.0.0-ballot - ballot
CH EPR mHealth (R4)
3.0.0-ballot - ballot
This page is part of the CH EPR mHealth (R4) (v3.0.0-ballot: Draft Ballot 1) based on FHIR R4. This is the current published version in its permanent home (it will always be available at this URL). For a full list of available versions, see the Directory of published versions 
This section documents additional requirements in the Swiss EPR context on the Mobile Patient Identifier Cross-reference Query.
The Mobile Patient Identifier Cross-reference Query is used by an app in the Swiss EPR to query with the local identifier the MPI and get the corresponding MPI-PID and the EPR-SPID identifier for the patient.
Actor: Patient Identifier Cross-reference Consumer
Role: Queries the Patient Identifier Cross-reference Manager for the MPI-PID and EPR-SPID.
Actor: Patient Identifier Cross-reference Manager
Role: Resolves the local ID sent with the request to the MPI-PID and EPR-SPID.
Patient Identifier Cross-referencing for mobile (PIXm), Rev. 3.0.0 – Trial-Implementation, November 8, 2021
This PIXm Profile is based on Release 4 of the emerging HL7® FHIR® standard.
A mobile app wants to access (read or write) documents, which requires the MPI-PID of the patient.
The message semantics is the same as defined in 2:3.83.4.1.2 with a restriction on the targetSystem query Parameter:
GET [base]/Patient/$ihe-pix?sourceIdentifier=[token]{&targetSystem=[uri]}{&_format=[token]}
| Query parameter Name | Cardinalty | Search Type | Description | Swiss National Extension |
|---|---|---|---|---|
| Input Parameters | ||||
| sourceIdentifier | 1..1 | token | The Patient identifier search parameter that will be used by the Patient Identifier Cross-reference Manager to find cross matching identifiers associated with the Patient Resource. See Section 2:3.83.4.1.2.1. | No further refinement. |
| targetSystem | 1..2 | uri | The Assigning Authorities for the Patient Identity Domains from which the returned identifiers shall be selected. See Section 2:3.83.4.1.2.2. | SHALL be Restricted to the Assigning authority of the community and/or the EPR-SPID. |
| _format | 0..1 | token | The requested format of the response from the mime-type value set. See ITI TF-2: Appendix Z.6. | No further refinement. |
| Parameter | Cardinality | Data Type | Description |
|---|---|---|---|
| FHIR Parameters Resource | |||
| targetIdentifier | 0..2 | Identifier | The identifier found. Constraints to include the assigning authority as specified in ITI TF-2: Appendix E.3. |
| targetId | 0..1 | Reference(Patient) | The URL of the Patient Resource |
If the targetSystem is not restricted to the Assigning authority of the community and/or the EPR-SPID the error Target Domain not recognized (2:3.83.4.2.2.4) SHALL be returned.
See the corresponding OperationDefinition.
Query for a patient with a local id of 123 by AssigningAuthority oid 1.2.3 which resides in a community where the Assigning Authority is oid 5.6.7 and the MPI-PID and EPR-SPID are requested:
GET [base]/Patient/$ihe-pix?sourceIdentifier=urn:oid:2.999.1.2.3|123&targetSystem=urn:oid:2.999.5.6.7&targetSystem=urn:oid:2.16.756.5.30.1.127.3.10.3
Example response to above query
Alternative:
See Input Parameters example (and the corresponding profile) for the Mobile Patient Identifier Cross-reference Query.
See Output Parameters example (and the corresponding profile) as response to the Mobile Patient Identifier Cross-reference Query.
TLS SHALL be used. This national extension enforces authentication and authorization of access to the Patient Identifier Cross-reference Manager using the IUA profile with basic access token. Consequently the Mobile Patient Identifier Cross-reference Query [ITI-83] request must authorize using the Incorporate Access Token [ITI-72] transaction of the IUA profile.