March 2023

Blue Cross commercial subscriber IDs that started with 99 have changed

Some Blue Cross Blue Shield of Michigan commercial group members had subscriber or enrollee IDs that began with 99. In January 2023, the subscriber/enrollee ID numbers for these members changed.

This change didn’t affect the members’ benefits.

For additional information — including how to look up members’ eligibility and benefits in our provider portal without entering a subscriber or enrollee ID — see the Jan. 6 provider alert.

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