T4O

BCBS Prefix T4O

Anthem Blue Cross Blue Shield of Colorado

Colorado • Medicare Advantage, HMO, PPO

Billing essentials

Provider phone
(800) 676-2583
Electronic payer ID
00050
Claims mailing address
P.O. Box 105557, Atlanta, GA 30348-5557
Timely filing limit
90 daysCompare all plans
Prior authorization phone
(844) 396-2330

Coverage under prefix T4O

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.

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.

PPO

PPO coverage under this prefix means the member can access any provider. In-network providers have negotiated rates with the plan, while out-of-network providers are reimbursed based on usual and customary charges. Prior authorization is generally not required for routine services but may be needed for high-cost procedures.

About Anthem Blue Cross Blue Shield of Colorado

Independent licensee of the Blue Cross Blue Shield Association serving more than 1.5 million Coloradans with commercial, Medicare, and Medicaid plans. Operates in all Colorado counties.