C4M

BCBS Prefix C4M

Empire Blue Cross Blue Shield

New York • Medicare Advantage, EPO, High-Deductible Health Plan (HDHP)

Billing essentials

Provider phone
(800) 397-1630
Electronic payer ID
00803
Claims mailing address
P.O. Box 1407, Church Street Station, New York, NY 10008
Timely filing limit
90 daysCompare all plans
Prior authorization phone
(800) 397-1630

Coverage under prefix C4M

Medicare Advantage

Medicare Advantage coverage under this prefix means the plan administers Medicare Part A and Part B benefits on behalf of CMS. These claims may have different processing rules than commercial claims, including different prior authorization requirements and appeal timelines. CMS timely filing rules (365 days) typically apply.

EPO

Under this EPO prefix, the member has no out-of-network coverage for routine care. However, unlike HMO plans, no referral is needed to see a specialist within the network. When billing, confirm the provider's network participation status with the plan before submitting the claim.

HDHP

Under this HDHP prefix, the member's plan has a higher deductible than traditional coverage. This affects patient cost-sharing but does not change how claims are submitted or processed. Use the same payer ID, claims address, and filing procedures listed above. Verify the member's remaining deductible before estimating patient responsibility.

About Empire Blue Cross Blue Shield

Part of the Blue Cross Blue Shield Association, serving New York members with commercial, Medicare and Medicaid plans.