B5G

BCBS Prefix B5G

CareFirst BlueCross BlueShield

Maryland/District of Columbia/Northern Virginia • EPO, HMO, Medicaid

Billing essentials

Provider phone
(800) 842-5975
Electronic payer ID
580
Claims mailing address
10455 Mill Run Circle, P.O. Box 825, Owings Mills, MD 21117
Timely filing limit
180 daysCompare all plans
Prior authorization phone
(866) 773-2884

Coverage under prefix B5G

EPO

This is an Exclusive Provider Organization (EPO) prefix. EPO plans do not cover out-of-network care except in genuine emergencies. Members can see any in-network specialist without a referral from their primary care physician. Claims for out-of-network non-emergency services will be denied.

HMO

This is a Health Maintenance Organization (HMO) prefix. HMO plans have stricter routing requirements than PPO plans. Members select a PCP who manages their care and issues referrals. Claims for specialist services should include the referral number. Out-of-network claims will typically be denied unless emergency criteria are met.

Medicaid

This prefix is associated with Medicaid managed care. When a BCBS plan administers Medicaid, the claims process may differ from commercial coverage: different payer ID, different claims address, different prior authorization rules, and different timely filing limits. Always verify Medicaid-specific details before submitting.

About CareFirst BlueCross BlueShield

Independent licensee of the Blue Cross Blue Shield Association serving Maryland, District of Columbia and Northern Virginia.