Prior authorization across the Blue Cross Blue Shield federation

BCBS is not one payer. The Blue Cross Blue Shield Association licenses 36 independent plans across the US, each with its own coverage policies, utilization management (UM) delegates, and provider portals. Prior authorization runs plan by plan: you confirm coverage with a HIPAA 270/271 eligibility exchange, check the home plan's medical policy for the CPT or HCPCS code, then file the request through the HIPAA 278 electronic PA transaction or, more often in practice, through a plan portal such as Availity. A "BCBS" member card does not name the home plan on its own; the alpha prefix on the card does. Because plans like HCSC and Highmark write their own criteria and delegate to their own vendors, the single most common operational mistake in RCM is submitting a PA to the wrong BCBS plan. This page walks the 10 largest plans and the BlueCard out-of-area logic that ties them together.

The BCBS federation explained

The BCBS Association licenses independent plans: HCSC (Health Care Service Corp, covering IL, TX, NM, MT, OK), Highmark (PA, DE, WV, NY parts), Anthem BCBS (CA, CO, CT, GA, IN, KY, ME, MO, NH, NV, NY parts, OH, VA, WI), BCBS Michigan, Florida Blue, Regence (OR, WA, ID, UT), Premera (WA, AK), Independence BC (PA), CareFirst (MD, DC, N VA), Wellmark (IA, SD), BCBS MN, BCBS NC, BCBS AL, BCBS LA, BCBS TN, BCBS MA, BCBS RI, BCBS KS, BCBS AZ, BCBS NE, BCBS ND, BCBS ID, BCBS HI (HMSA), Triple-S (PR), and several others. Each plan has its own provider portal, PA policy, and UM delegation. Availity is the common clearinghouse for many but not all. The BlueCard rules below are specific to the federation; for the non-Blue national carriers, see prior authorization for commercial payers.

HCSC (Health Care Service Corporation)

HCSC operates BCBS in TX, IL, NM, MT, and OK, making it the largest customer-owned health insurer in the US. PA delegates: eviCore for radiology, cardiology, MSK (TX, IL); Carelon for some specialty services; Accolade and Altruista for care management. Portal: Availity plus HCSC\u2019s provider portal. Texas has specific Gold Card requirements under HB 3459 that HCSC implements.

Highmark

Highmark serves PA, DE, WV, and parts of NY. Strong in western PA. PA delegates include Carelon for several service lines. Portal: Availity plus Highmark provider portal.

BCBS Michigan (and BCN)

BCBS Michigan runs two lines with separate PA rules: BCBSM (traditional PPO and Medicare Advantage) and Blue Care Network, its HMO. Delegation varies by product and service. TurningPoint reviews many musculoskeletal and cardiac procedures, while Carelon and eviCore handle radiology and other specialty services on some plans. Providers submit eligibility and PA through the BCBSM provider portal or Availity, and it pays to confirm which vendor owns the CPT code before filing, because BCN and BCBSM frequently route the same procedure to different reviewers.

Florida Blue (GuideWell)

Florida Blue is part of GuideWell, covering FL broadly with commercial, MA, and exchange. PA through Availity and direct portal. Specialty services include eviCore and Carelon delegations.

Regence (OR, WA, ID, UT)

Regence serves OR, WA, ID, and UT under the Cambia Health Solutions umbrella, and each state operates as its own licensed plan with its own medical policy set. Specialty PA is delegated: Carelon reviews advanced imaging, cardiology, and sleep studies on several lines, and Avalon manages outpatient lab benefits. Providers submit through the Availity portal or Regence's own provider tools. The state that issued the member's plan, not the state where care is delivered, controls the coverage decision, which matters when a Regence member is treated across the OR/WA border.

Premera (WA, AK)

Premera Blue Cross serves WA and AK. Note that Premera covers much of WA while Regence covers the rest, a unique state-split arrangement. PA through direct portal and Availity.

Independence Blue Cross (PA)

Independence Blue Cross covers southeastern Pennsylvania, centered on the Philadelphia metro, and shares a parent, the Independence Health Group, with AmeriHealth. PA is delegated by service line: eviCore reviews advanced imaging and post-acute care, and Carelon handles selected specialty services. Providers file eligibility and authorization through the Availity portal or the NaviNet-based Independence provider tools. Commercial, Medicare Advantage (Keystone 65 HMO), and exchange products each carry their own PA list, so confirm the product on the card before submitting.

Wellmark (IA, SD)

Wellmark is the BCBS licensee for Iowa and South Dakota, operating both states from a shared medical policy library. Prior authorization is delegated in part to eviCore for advanced imaging, radiation oncology, and musculoskeletal services, while Wellmark reviews many other requests in-house. Providers submit eligibility and PA through the Wellmark provider portal or Availity. Wellmark publishes its own precertification list identifying which CPT and HCPCS codes require review before the date of service, and that list is the reference point for whether a request is even needed.

Anthem BCBS (14 states under Elevance)

Anthem (Elevance Health) operates BCBS plans in 14 states: CA, CO, CT, GA, IN, KY, ME, MO, NH, NV, NY (select counties), OH, VA, and WI. PA is heavily delegated to Carelon (radiology, cardiology, MSK, behavioral, post-acute). This is the most consolidated BCBS operation and often the easiest to automate because the UM criteria are aligned across the 14 states.

Triple-S (Puerto Rico)

Triple-S Salud is the BCBS licensee in Puerto Rico and operates under both federal and Commonwealth insurance rules, so its PA workflow differs from the mainland plans. Clinical documentation and member communication are commonly handled in Spanish, and coverage policies reflect Puerto Rico's Medicare Advantage and commercial market rather than a stateside plan's. Flexbone submits in Spanish, reads the Triple-S medical policy for the relevant CPT code, and routes each request through the plan's portal and the correct UM queue.

BlueCard and out-of-area PA

The BlueCard program lets a member of one BCBS plan see a provider contracted with a different BCBS plan. The provider submits the claim to the local plan (host plan), but the PA rules and coverage decisions belong to the member\u2019s home plan. Alpha prefix on the member ID card identifies the home plan. Flexbone reads the alpha prefix and routes PA to the correct home plan automatically. This avoids the most common BCBS operational mistake: a TX provider submitting a PA to HCSC for a patient whose home plan is actually Florida Blue.

Availity as the common portal

Most BCBS plans use Availity for eligibility, PA, and claim status. This is a meaningful consolidation: one portal, multiple payers. But not all BCBS plans are on Availity, and the plans that are on Availity often require separate login credentials per plan. Flexbone manages the credential set automatically and operates Availity across all plans that use it. For the delegated review vendors that sit behind these portals, see PA portals and clearinghouses.