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Use the $member-match operation for Azure API for FHIR

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Important

Azure API for FHIR will be retired on September 30, 2026. Follow the migration strategies to transition to Azure Health Data Services FHIR® service by that date. Due to the retirement of Azure API for FHIR, new deployments won't be allowed beginning April 1, 2025. Azure Health Data Services FHIR service is the evolved version of Azure API for FHIR that enables customers to manage FHIR, DICOM, and MedTech services with integrations into other Azure services.

$member-match is an operation that is defined as part of the Da Vinci Health Record Exchange (HRex). In this guide, we walk through what $member-match is and how to use it.

Overview of $member-match

The $member-match operation was created to help with the payer-to-payer data exchange, by allowing a new payer to get a unique identifier for a patient from the patient’s previous payer. The $member-match operation requires three pieces of information to be passed in the body of the request:

  • Patient demographics

  • The old coverage information

  • The new coverage information (not required based on our implementation)

After the data is passed in, the Azure API for FHIR validates that it can find a patient that exactly matches the demographics passed in with the old coverage information passed in. If a result is found, the response is a bundle with the original patient data plus a new identifier added in from the old payer, and the old coverage information.

Note

The specification describes passing the new coverage information in and back. We've decided to omit that data to keep the results smaller.

Example of $member-match

To use $member-match, use the following call.

POST {{fhirurl}}/Patient/$member-match

You need to include a parameters resource in the body that includes the patient, the old coverage, and the new coverage. For a JSON representation, see $member-match example request.

If a single match is found, you receive a 200 response with another identifier added.

200 hundred response code.

If the $member-match can't find a unique match, you receive a 422 response with an error code.

Next steps

In this guide, you learned about the $member-match operation. Next, you can learn about testing the Da Vinci Payer Data Exchange IG in Touchstone, which requires the $member-match operation.

DaVinci PDex

Note

FHIR® is a registered trademark of HL7 and is used with the permission of HL7.