A3T

BCBS Prefix A3T

Blue Cross Blue Shield of Texas

Texas • HMO, Medicare Advantage, POS

Billing essentials

Provider phone
(800) 451-0287
Electronic payer ID
00246
Claims mailing address
P.O. Box 660044, Dallas, TX 75266-0044
Timely filing limit
180 daysCompare all plans
Prior authorization phone
(800) 451-0287

Coverage under prefix A3T

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.

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.

POS

POS coverage under this prefix operates on a tiered system. Tier 1 (in-network with referral) provides the highest coverage. Tier 2 (in-network without referral) provides moderate coverage. Tier 3 (out-of-network) provides the lowest coverage. Verify which tier applies before submitting the claim.

About Blue Cross Blue Shield of Texas

Independent licensee providing commercial, Medicare and Medicaid plans to Texas members.