Upcoming Breaking Change - Coverage Subscriber ID

Last updated: 3 Jul 2026

On October 14, the subscriberId field in the FHIR Coverage resource will change meaning:

• Member IDs are now stored in the identifier attribute (live as of 9/25/25)
• The subscriberId attribute will represent the subscriber’s ID instead, and will be an optional field in Canvas. If the The patient is the subsciber radial button is selected the identifier (member ID) will equal the subscriberId (subscriber ID).
• The subscriberId search parameter will return subscriber IDs.
• The new identifier search parameter will return member IDs.

Action required: Update your API client code to use identifier for member IDs before the release date to avoid disruption.

Keep track of upcoming breaking changes here.