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State of Rhode Island Prefix R2I

Blue Cross Blue Shield of Rhode Island·RI·Provider Update
Effective date
Not stated
We identified it
Jun 19, 2026
Days to comply
—

Summary

Blue Cross Blue Shield of Rhode Island clarified that the State of Rhode Island has two valid prefixes: RIS (Rhode Island State) and R2I (Rhode 2 Island). Claims submitted with the incorrect prefix R21 will be rejected by the system and must be resubmitted with the correct prefix for proper reimbursement.

Action Required

Action needed
Immediately: Billing team must verify all Rhode Island State claims use correct prefixes RIS or R2I (not R21). Review any rejected Rhode Island claims and resubmit those with R21 prefix using the correct R2I prefix to BCBSRI for reimbursement. Update billing system and staff training to prevent future R21 prefix errors.

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