BCBS Alpha Prefix CAA to CZZ

The BCBS alpha prefix range from CAA to CZZ represents a segment of the Blue Cross Blue Shield (BCBS) insurance identification system. The CAA to CZZ prefixes are the first three characters on member ID cards and identify the BCBS home plan associated with a member. The CAA to CZZ range covers multiple states and BCBS companies, including prefixes like CBA for CareFirst BlueCross BlueShield and CRA for Capital Blue Cross. Medical billers and providers use the CAA to CZZ prefixes to route claims, verify insurance eligibility, and process reimbursements.

The CAA to CZZ prefix range maps each prefix to a BCBS company and state, enabling precise claims filing. CAA corresponds to CareFirst BlueCross BlueShield, while CRA is linked to Capital Blue Cross. The CAA to CZZ prefix mapping determines the correct claims submission address or phone number, preventing delays in processing. The CAA to CZZ range is part of the complete BCBS prefix directory, which spans from AAA through ZZZ and covers all assigned prefixes.

Understanding the CAA to CZZ prefix range is essential for medical billing professionals who process claims for BCBS members. Each prefix in the CAA to CZZ range identifies a specific BCBS licensee, the state of coverage, and the plan type. Accurate prefix identification ensures claims are routed to the correct BCBS entity, reducing denials and accelerating reimbursement timelines for healthcare providers.

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BCBS Prefix CAA to CEZ Assignment Table

The BCBS Prefix CAA to CEZ Assignment Table lists the Blue Cross Blue Shield prefixes from CAA to CEZ. The CAA to CEZ table identifies the BCBS home plans, states, and plan types associated with each prefix. The CAA to CEZ table includes claims phone numbers for accurate claims filing and verification.

Prefix	BCBS Home Plan Name	State	Plan Type	Claims Phone Number
CAA	CareFirst BCBS	Maryland/DC/N. Virginia	HMO/PPO/POS	(800) 692-7459
CAB	Anthem BCBS	Wisconsin	HMO/PPO/HDHP/EPO/POS	(800) 331-1475
CAC	Anthem Blue Cross	California	HMO/PPO/EPO	(800) 288-9294
CAD	BCBS of Massachusetts	Massachusetts	HMO/PPO/EPO/POS/Medicare Advantage	(800) 262-0820
CAX	Anthem Blue Cross	California	PPO, HMO, EPO	(800) 288-9294
CAY	BCBS of Massachusetts	Massachusetts	PPO, HMO	(800) 262-0820
CAZ	BCBS of Minnesota	Minnesota	PPO, HMO	(800) 292-9371

The prefixes listed in the CAA to CEZ table are verified for routing claims within the BCBS network. For prefixes not detailed in the CAA to CEZ table, consult the BCBS Plan Finder for current information.

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BCBS Prefix CBA CareFirst BlueCross BlueShield

The BCBS prefix CBA is assigned to CareFirst BlueCross BlueShield, serving members in the Maryland, Washington D.C., and Northern Virginia region. The CBA prefix serves as a primary identifier for members enrolled in CareFirst plans. CareFirst plans under the CBA prefix include Preferred Provider Organization (PPO), Health Maintenance Organization (HMO), and Point of Service (POS). The CBA prefix appears on member insurance cards, directing healthcare providers to route claims to the CareFirst-based BCBS entity.

When processing claims for members with the CBA prefix, medical billers must verify the plan type indicated on the insurance card. Plan type verification directs claims to the CareFirst BCBS processing center, reducing the risk of claim rejections and expediting reimbursement timelines. CareFirst BCBS may offer Medicare Advantage and Medicaid managed care services under related prefixes, providing coverage options for residents of Maryland, Washington D.C., and Northern Virginia.

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BCBS Prefix CFA to CKZ Assignment Table

The BCBS Prefix CFA to CKZ Assignment Table lists the Blue Cross Blue Shield alpha prefixes between CFA and CKZ. The CFA to CKZ table includes each prefix, the corresponding BCBS home plan, associated states, plan types, and claims contact numbers.

Prefix	BCBS Home Plan Name	State	Plan Type	Claims Phone Number
CFA	Independence Blue Cross	Pennsylvania	HMO, PPO, EPO, POS	(800) 275-2583
CFB	Wellmark BCBS	Iowa/South Dakota	HMO, PPO, EPO, POS	(800) 524-9242
CFC	Anthem BCBS of Georgia	Georgia	HMO, PPO, EPO, POS	(800) 772-1139
CFD	Anthem BCBS of Indiana	Indiana	HMO, PPO, EPO, POS	(800) 533-2583
CFE	BCBS of South Carolina	South Carolina	HMO, PPO, EPO, POS	(800) 288-2227
CFF	Highmark BCBS	Pennsylvania	HMO, PPO, EPO, POS	(800) 541-1524
CFG	BCBS of North Carolina	North Carolina	HMO, PPO, EPO, POS	(800) 672-7897
CFH	Anthem Blue Cross	California	HMO, PPO, EPO	(800) 288-9294
CFI	CareFirst BCBS	Maryland/DC/N. Virginia	HMO, PPO, EPO, POS	(800) 692-7459
CFJ	Wellmark BCBS	Iowa/South Dakota	HMO, PPO, EPO, POS	(800) 524-9242
CFK	Wellmark BCBS	Iowa/South Dakota	HMO, PPO, EPO, POS	(800) 524-9242
CFL	BCBS of South Carolina	South Carolina	HMO, PPO, EPO, POS	(800) 288-2227
CFM	BCBS of Massachusetts	Massachusetts	HMO, PPO, EPO, POS	(800) 262-0820
CFN	BCBS of Massachusetts	Massachusetts	HMO, PPO, EPO, POS	(800) 262-0820
CFO	CareFirst BCBS	Maryland/DC/N. Virginia	HMO, PPO, EPO, POS	(800) 692-7459
CFP	Highmark BCBS	Pennsylvania	HMO, PPO, EPO, POS	(800) 541-1524
CFQ	Blue Cross of Idaho	Idaho	HMO, PPO, EPO	(800) 627-1183
CFR	BCBS of Illinois	Illinois	HMO, PPO, EPO, POS	(800) 233-1474
CFS	Horizon BCBS of New Jersey	New Jersey	HMO, PPO, EPO, POS	(800) 682-9090
CFT	Empire BCBS	New York	HMO, PPO, EPO, POS	(800) 553-9603
CFU	CareFirst BCBS	Maryland/DC/N. Virginia	HMO, PPO, EPO, POS	(800) 692-7459
CFV	Wellmark BCBS	Iowa/South Dakota	HMO, PPO, EPO	(800) 524-9242
CFW	BCBS of Massachusetts	Massachusetts	HMO, PPO, EPO, POS	(800) 262-0820
CFX	Premera Blue Cross	Alaska	PPO, HMO, EPO	(800) 508-4722
CFY	Anthem BCBS	Ohio	PPO, HMO, EPO	(800) 331-1475
CFZ	Anthem BCBS	Ohio	PPO, HMO, EPO	(800) 331-1475
CGA	Anthem Blue Cross	California	PPO, HMO, EPO	(800) 288-9294
CGW	BCBS of Minnesota	Minnesota	PPO, HMO	(800) 292-9371
CGX	Anthem BCBS	Missouri	PPO, HMO	(800) 331-1475
CGY	Florida Blue	Florida	HMO, PPO	(800) 352-2583

The CFA to CKZ table includes assigned prefixes with their plan details and contact numbers for accurate claims routing.

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BCBS Prefix CLA to CPZ Assignment Table

The BCBS Alpha Prefix CLA to CPZ Assignment Table provides information for medical billing and claims processing. The CLA to CPZ table includes details about each prefix, the corresponding Blue Cross Blue Shield home plan, associated states, plan types, and claims contact numbers.

Prefix	BCBS Home Plan Name	State	Plan Type	Claims Phone Number
CLA	BCBS of Illinois	Illinois	HMO, PPO, EPO	(800) 233-1474
CLB	BCBS of Illinois	Illinois	HMO, PPO, EPO	(800) 233-1474
CHA	BCBS of Alabama	Alabama	PPO, HMO	(800) 292-6662
CIP	BCBS of Alabama	Alabama	PPO, HMO	(800) 292-6662
CIQ	BCBS of Tennessee	Tennessee	PPO	(800) 467-2954
CIR	Premera Blue Cross	Alaska	PPO, HMO, EPO	(800) 508-4722
CIS	Regence BCBS	Oregon/Idaho/Utah/Washington	PPO, HMO, POS	(888) 248-2595
CPZ	Blue Shield of Northeastern New York	New York	PPO, EPO	(800) 499-1275

The CLA to CPZ table is part of the BCBS prefix directory for proper claim submission and processing.

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BCBS Prefix CRA to CZZ Assignment Table

The BCBS prefix range from CRA to CZZ covers Blue Cross Blue Shield plans across multiple states. The CRA to CZZ table provides detailed information about each prefix, including the associated home plan, state, plan type, and claims phone number.

Prefix	BCBS Home Plan Name	State	Plan Type	Claims Phone Number
CRA	Capital Blue Cross	Pennsylvania	HMO, PPO, EPO, POS	(800) 962-2242
CRB	BCBS of Minnesota	Minnesota	HMO, PPO, EPO	(800) 292-9371
CRC	Capital Blue Cross	Pennsylvania	HMO, PPO, EPO, POS	(800) 962-2242
CRD	BCBS of Minnesota	Minnesota	HMO, PPO, EPO	(800) 292-9371
CRE	Blue Shield of California	California	HMO, PPO, EPO	(800) 676-2583
CRF	BCBS of North Carolina	North Carolina	HMO, PPO, EPO	(800) 672-7897
CRG	BCBS of Texas	Texas	HMO, PPO, EPO	(800) 521-9628
CRH	BCBS of Michigan	Michigan	HMO, PPO, EPO	(800) 482-3276
CRI	Anthem BCBS of Ohio	Ohio	HMO, PPO, EPO	(800) 331-1475
CRJ	Premera Blue Cross	Washington	HMO, PPO, EPO	(800) 722-1471
CRK	BCBS of Texas	Texas	HMO, PPO, EPO	(800) 521-9628
CRL	Excellus BCBS	New York	HMO, PPO, EPO	(800) 499-1275
CRM	BCBS of Illinois	Illinois	HMO, PPO, EPO	(800) 233-1474
CRN	BCBS of North Carolina	North Carolina	HMO, PPO, EPO	(800) 672-7897
CRO	Anthem BCBS of Virginia	Virginia	HMO, PPO, EPO	(800) 331-1475
CRP	BCBS of Illinois	Illinois	HMO, PPO, EPO	(800) 233-1474
CRQ	Anthem BCBS of Wisconsin	Wisconsin	HMO, PPO, EPO	(800) 331-1475
CRR	Anthem BCBS of Ohio	Ohio	HMO, PPO, EPO	(800) 331-1475
CRS	Premera Blue Cross	Alaska	HMO, PPO, EPO	(800) 508-4722
CRT	BCBS of Nebraska	Nebraska	HMO, PPO, EPO	(800) 432-3990
CRU	BCBS of Western New York	New York	HMO, PPO, EPO	(800) 854-1790
CRV	Anthem BCBS of Ohio	Ohio	HMO, PPO, EPO	(800) 331-1475
CRW	Anthem Blue Cross	California	HMO, PPO, EPO	(800) 288-9294
CRX	BCBS of North Carolina	North Carolina	HMO, PPO, EPO	(800) 672-7897
CRY	BCBS of Tennessee	Tennessee	HMO, PPO, EPO	(800) 467-2954
CRZ	BCBS of Texas	Texas	HMO, PPO, EPO	(800) 521-9628
CSA	BCBS of Alabama	Alabama	HMO, PPO, EPO	(800) 292-6662
CSB	BCBS of Illinois	Illinois	HMO, PPO, EPO	(800) 233-1474
CSC	Florida Blue	Florida	HMO, PPO, EPO	(800) 352-2583
CSD	CareFirst BCBS	Maryland/DC/N. Virginia	HMO, PPO, EPO	(800) 692-7459
CSE	BCBS of Massachusetts	Massachusetts	HMO, PPO, EPO	(800) 262-0820
CSF	Anthem BCBS of Colorado	Colorado	HMO, PPO, EPO	(800) 424-5725
CSG	Anthem BCBS of Georgia	Georgia	HMO, PPO, EPO	(800) 772-1139
CSH	Anthem BCBS of Georgia	Georgia	HMO, PPO, EPO	(800) 772-1139
CSI	BCBS of Kansas City	Missouri	HMO, PPO	(816) 395-2222
CSJ	Anthem BCBS of Missouri	Missouri	HMO, PPO, EPO	(800) 331-1475
CSK	Wellmark BCBS	Iowa/South Dakota	HMO, PPO, EPO	(800) 524-9242
CSL	Horizon BCBS of New Jersey	New Jersey	HMO, PPO, EPO	(800) 682-9090
CSM	Arkansas BCBS	Arkansas	HMO, PPO, EPO	(800) 643-5690
CSN	Independence Blue Cross	Pennsylvania	HMO, PPO, EPO	(800) 275-2583
CSO	CareFirst BCBS	Maryland/DC/N. Virginia	HMO, PPO, EPO	(800) 692-7459
CSP	Excellus BCBS	New York	HMO, PPO, EPO	(800) 499-1275
CSQ	Anthem BCBS of Missouri	Missouri	HMO, PPO, EPO	(800) 331-1475
CSR	Blue Shield of California	California	HMO, PPO, EPO	(800) 676-2583
CSS	Anthem BCBS of Colorado	Colorado	HMO, PPO, EPO	(800) 424-5725
CST	Anthem BCBS of Colorado	Colorado	HMO, PPO, EPO	(800) 424-5725
CSU	Regence BCBS	Oregon/Idaho/Utah/Washington	HMO, PPO, EPO	(888) 248-2595
CSV	Anthem BCBS of Virginia	Virginia	HMO, PPO, EPO	(800) 331-1475
CSW	BCBS of Nebraska	Nebraska	HMO, PPO, EPO	(800) 432-3990
CSX	Wellmark BCBS	Iowa/South Dakota	HMO, PPO	(800) 524-9242
CSY	Anthem Blue Cross	California	HMO, PPO, EPO	(800) 288-9294
CSZ	BCBS of South Carolina	South Carolina	POS	(800) 288-2227
CTA	BCBS of Massachusetts	Massachusetts	HMO	(800) 262-0820
CTB	BCBS of South Carolina	South Carolina	PPO	(800) 288-2227
CTC	BCBS of Oklahoma	Oklahoma	POS	(800) 942-5837
CTD	Anthem BCBS of Indiana	Indiana	EPO	(800) 533-2583
CTE	Blue Cross of Idaho	Idaho	HMO	(800) 627-1183
CTF	BCBS of Minnesota	Minnesota	PPO	(800) 292-9371
CTG	Anthem BCBS of Connecticut	Connecticut	EPO	(800) 424-8730
CTH	BCBS of South Carolina	South Carolina	HMO, PPO, EPO	(800) 288-2227
CTI	BCBS of Massachusetts	Massachusetts	HMO, PPO, EPO	(800) 262-0820
CTJ	Anthem BCBS of Indiana	Indiana	HMO, PPO, EPO	(800) 533-2583
CTK	Capital Blue Cross	Pennsylvania	HMO, PPO, EPO	(800) 962-2242
CTL	BCBS of Illinois	Illinois	HMO, PPO, EPO	(800) 233-1474
CTM	Blue Cross of Idaho	Idaho	HMO, PPO, EPO	(800) 627-1183
CTN	Anthem BCBS of Connecticut	Connecticut	HMO, PPO, EPO	(800) 424-8730
CTO	Blue Shield of California	California	HMO, PPO, EPO	(800) 676-2583
CTP	Anthem BCBS of Connecticut	Connecticut	HMO, PPO, EPO	(800) 424-8730
CTQ	BCBS of Western New York	New York	HMO, PPO, EPO	(800) 854-1790
CTR	Anthem BCBS of Indiana	Indiana	HMO, PPO, EPO	(800) 533-2583
CTS	BCBS of Nebraska	Nebraska	HMO, PPO, EPO	(800) 432-3990
CTT	Premera Blue Cross	Alaska	HMO, PPO, EPO	(800) 508-4722
CTU	Blue Shield of California	California	HMO, PPO, EPO	(800) 676-2583
CTV	BCBS of Massachusetts	Massachusetts	HMO, PPO, EPO	(800) 262-0820
CTW	Premera Blue Cross	Alaska	HMO, PPO, EPO	(800) 508-4722
CTX	Blue Shield of California	California	HMO, PPO, EPO	(800) 676-2583
CTY	BCBS of Illinois	Illinois	HMO, PPO, EPO	(800) 233-1474
CTZ	BCBS of Arizona	Arizona	HMO, PPO, EPO	(800) 352-2583
CUA	BCBS of Texas	Texas	HMO, PPO	(800) 521-9628
CUB	Excellus BCBS	New York	HMO, PPO	(800) 499-1275
CUC	BCBS of Illinois	Illinois	HMO, PPO	(800) 233-1474
CUD	BCBS of Massachusetts	Massachusetts	HMO, PPO	(800) 262-0820
CUE	Anthem BCBS of Ohio	Ohio	HMO, PPO	(800) 331-1475
CUF	Blue Shield of California	California	HMO, PPO	(800) 676-2583
CUG	Wellmark BCBS	Iowa/South Dakota	HMO, PPO	(800) 524-9242
CUH	Anthem BCBS of Colorado	Colorado	HMO, PPO	(800) 424-5725
CUI	Independence Blue Cross	Pennsylvania	HMO, PPO	(800) 275-2583
CUJ	BCBS of South Carolina	South Carolina	HMO, PPO	(800) 288-2227
CUK	BCBS of Alabama	Alabama	HMO, PPO	(800) 292-6662
CUL	Blue Shield of California	California	HMO, PPO	(800) 676-2583
CUM	Anthem BCBS of Virginia	Virginia	HMO, PPO	(800) 331-1475
CUN	Highmark BCBS	Pennsylvania	HMO, PPO	(800) 541-1524
CUO	Independence Blue Cross	Pennsylvania	HMO, PPO	(800) 275-2583
CUP	Wellmark BCBS	Iowa/South Dakota	HMO, PPO	(800) 524-9242
CUQ	Blue Shield of California	California	HMO, PPO	(800) 676-2583
CUR	BCBS of Western New York	New York	HMO, PPO	(800) 854-1790
CUS	Independence Blue Cross	Pennsylvania	HMO, PPO	(800) 275-2583
CUT	BCBS of Illinois	Illinois	HMO, PPO	(800) 233-1474
CUU	BCBS of Texas	Texas	HMO, PPO	(800) 521-9628
CUV	BCBS of Illinois	Illinois	HMO, PPO	(800) 233-1474
CUW	Wellmark BCBS	Iowa/South Dakota	HMO, PPO	(800) 524-9242
CUX	Regence Blue Shield	Idaho	PPO, HMO	(888) 248-2595
CUY	Regence BCBS	Oregon/Idaho/Utah/Washington	PPO, HMO	(888) 248-2595
CUZ	Anthem BCBS of Ohio	Ohio	HMO, PPO	(800) 331-1475
CVA	Anthem BCBS of Indiana	Indiana	HMO, PPO	(800) 533-2583
CVB	Florida Blue	Florida	HMO, PPO	(800) 352-2583
CVC	BCBS of Illinois	Illinois	HMO, PPO	(800) 233-1474
CVD	CareFirst Administrators	Maryland	HMO, PPO	(800) 692-7459
CVE	Anthem BCBS of Ohio	Ohio	HMO, PPO	(800) 331-1475
CVF	Anthem BCBS of Ohio	Ohio	HMO, PPO	(800) 331-1475
CVG	Anthem BCBS of Ohio	Ohio	HMO, PPO	(800) 331-1475
CVH	BCBS of Michigan	Michigan	HMO, PPO	(800) 482-3276
CVI	BCBS of Alabama	Alabama	HMO, PPO	(800) 292-6662
CVJ	Florida Blue	Florida	HMO, PPO	(800) 352-2583
CVK	Florida Blue	Florida	HMO, PPO	(800) 352-2583
CVL	Regence BCBS of Oregon	Oregon	PPO, HMO	(888) 248-2595
CVM	Anthem BCBS of Wisconsin	Wisconsin	HMO, PPO	(800) 331-1475
CVN	Anthem BCBS of Wisconsin	Wisconsin	HMO, PPO	(800) 331-1475
CVO	Anthem BCBS of Virginia	Virginia	HMO, PPO	(800) 331-1475
CVP	Anthem BCBS of Ohio	Ohio	HMO, PPO	(800) 331-1475
CVQ	Anthem BCBS of Ohio	Ohio	HMO, PPO	(800) 331-1475
CVR	Anthem BCBS of Ohio	Ohio	HMO, PPO	(800) 331-1475
CVS	Wellmark BCBS	Iowa/South Dakota	HMO, PPO	(800) 524-9242
CVT	CareFirst BCBS	Maryland	HMO, PPO	(800) 692-7459
CVU	Anthem BCBS of Virginia	Virginia	HMO, PPO	(800) 331-1475
CVV	CareFirst BCBS	Maryland	HMO, PPO	(800) 692-7459
CVW	Blue Shield of California	California	HMO, PPO	(800) 676-2583
CVX	BCBS of Illinois	Illinois	HMO, PPO	(800) 233-1474
CVY	Anthem BCBS of Ohio	Ohio	HMO, PPO	(800) 331-1475
CVZ	Wellmark BCBS	Iowa/South Dakota	HMO, PPO	(800) 524-9242
CWA	CareFirst BCBS	Maryland	HMO, PPO	(800) 692-7459
CWB	Anthem BCBS of Ohio	Ohio	HMO, PPO	(800) 331-1475
CWC	BCBS of Texas	Texas	HMO, PPO	(800) 521-9628

The CRA to CZZ table identifies and categorizes the insurance plans under the Blue Cross Blue Shield umbrella with plan details for accurate claims processing.

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What Are the BCBS Alpha Prefixes from CAA to CZZ?

The BCBS alpha prefixes from CAA to CZZ are three-character codes assigned to Blue Cross Blue Shield insurance plans. Each prefix in the CAA to CZZ range identifies the BCBS home plan, the state of origin, and the plan type (such as PPO, HMO, EPO, or POS). The CAA to CZZ prefixes appear as the first three characters on a member's insurance ID card and are used by medical billers and healthcare providers to route claims, verify eligibility, and identify the correct BCBS entity for reimbursement.

The CAA to CZZ prefix range is part of the larger BCBS alpha prefix system, which spans from AAA through ZZZ. The Blue Cross Blue Shield Association assigns prefixes to its independent licensees across the United States. Each prefix maps to a specific BCBS company and state, such as CBA for CareFirst BlueCross BlueShield or CRA for Capital Blue Cross. The prefix system standardizes the identification of BCBS plans for claims processing and provider services.

Not all prefixes in the CAA to CZZ range are assigned to active BCBS plans. Some prefixes remain unallocated and are reserved for future use or are not currently in circulation. Medical billers should verify unallocated prefixes against the latest BCBS directories or contact the BCBS Association to confirm prefix assignments before submitting claims.

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Which BCBS Companies Use Prefixes in the CAA to CZZ Range?

Multiple Blue Cross Blue Shield companies use prefixes in the CAA to CZZ range. The following BCBS companies are among those with assigned prefixes in this range:

health_and_safety CareFirst BlueCross BlueShield — Prefixes include CAA, CBA, CFI, CFO, CFU, CSD, CSO, CVD, CVT, CVV, and CWA, covering HMO, PPO, EPO, and POS plans in Maryland, Washington D.C., and Northern Virginia.
health_and_safety Anthem Blue Cross Blue Shield — Anthem operates across multiple states with prefixes such as CAB (Wisconsin), CAC (California), CFC (Georgia), CFD (Indiana), CRI (Ohio), CRO (Virginia), and many more throughout the C range.
health_and_safety BCBS of Illinois — Prefixes include CFR, CLA, CLB, CRM, CRP, CSB, CTL, CTY, CUC, CUT, CUV, CVC, and CVX, covering HMO, PPO, and EPO plans in Illinois.
health_and_safety Wellmark BCBS — Prefixes include CFB, CFJ, CFK, CFV, CSK, CSX, CUG, CUP, CUW, CVS, and CVZ, covering HMO, PPO, and EPO plans in Iowa and South Dakota.
health_and_safety Blue Shield of California — Prefixes include CRE, CSR, CTO, CTU, CTX, CUF, CUL, CUQ, and CVW, covering HMO, PPO, and EPO plans in California.
health_and_safety Capital Blue Cross — Prefixes include CRA, CRC, and CTK, covering HMO, PPO, EPO, and POS plans in Pennsylvania.
health_and_safety Premera Blue Cross — Prefixes include CFX, CIR, CRJ, CRS, CTT, and CTW, covering HMO, PPO, and EPO plans in Alaska and Washington.

These companies represent a portion of the independent BCBS licensees with prefixes in the CAA to CZZ range. Each company operates within specific states and offers a variety of plan types. Medical billers should consult the full BCBS prefix directory for a complete list of assignments within this range.

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How to Read the BCBS CAA to CZZ Prefix Table?

Reading the BCBS CAA to CZZ prefix table follows a systematic approach for accurate claims processing. The CAA to CZZ prefix table identifies the correct Blue Cross Blue Shield plan based on the prefix found on a patient's insurance card.

1 Locate the Prefix

Identify the three-character prefix on the patient's insurance card. The BCBS prefix is the first set of letters in the member ID.

2 Match the Prefix

Scan the 'Prefix' column in the CAA to CZZ table to find the exact three-letter code. The table is organized alphabetically for navigation.

3 Identify Plan Details

After locating the prefix, read across the row to gather details about the BCBS Home Plan Name, the State of origin, and the Plan Type (such as PPO, HMO, EPO, or POS). The plan details determine the coverage rules and network.

4 Verify Claims Information

Note the Claims Phone Number provided in the table. The claims phone number verifies details and confirms that claims are submitted to the correct payer following the appropriate billing protocols.

How to Look Up a Specific BCBS Prefix in the CAA to CZZ Range?

Looking up a BCBS prefix in the CAA to CZZ range supports accurate claims processing. The following steps guide proper identification and submission.

1 Locate the Prefix on the Insurance Card

The BCBS prefix identifier is a three-character code found on the front of the patient's BCBS insurance card. The prefix code identifies the home plan and state.

2 Match the Prefix to the Reference Table

Use a BCBS prefix lookup directory to find the exact prefix. The directory provides details such as the BCBS home plan name, state, and plan type (e.g., PPO, HMO).

3 Identify the Home Plan and State

After matching the prefix, note the BCBS company and the state the plan serves. The home plan and state information directs claims routing.

4 Verify with the BCBS Contact Number

Before submitting claims, contact the claims phone number listed in the prefix table. Contacting the claims department confirms the patient's eligibility and coverage details.

5 Submit the Claim to the Correct Address

Use the verified information to route the claim to the appropriate BCBS company's processing address or electronic payer ID. All claim forms should reference the correct prefix and member ID to avoid denials.

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How to Verify the BCBS Home Plan Using the Three-Character Prefix?

Verifying the BCBS home plan using the three-character prefix requires locating the prefix on the member's insurance ID card and matching it against the BCBS prefix directory. The prefix is the first three alphabetic characters on the card and maps directly to a BCBS company and state. To verify, billers should access the BCBS prefix lookup table, find the matching three-character code, and confirm the home plan name, state, and plan type. The claims phone number listed for that prefix can be used to contact the BCBS plan directly for additional verification, such as confirming member eligibility, benefits, and claims submission requirements. Accurate prefix verification prevents claims from being submitted to the wrong BCBS entity and reduces processing delays.

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What to Do When the CAA to CZZ Prefix Is Not in the Table?

When a BCBS prefix in the CAA to CZZ range is not listed in the assignment table, the prefix may be unallocated, recently reassigned, or not yet added to the reference directory. Medical billers should first verify the prefix by checking the BCBS Plan Finder tool on the Blue Cross Blue Shield Association website. The Plan Finder provides the most current prefix assignments and associated plan details. If the prefix is still not found, billers should contact the BCBS Association's provider support line or the local BCBS plan for assistance.

Submitting claims with an unverified or missing prefix can result in claim rejections, payment delays, or misdirected claims. Billers should document the verification steps taken and note any discrepancies between the prefix on the member's card and the available directories. If the prefix is confirmed as unallocated, the biller should request updated insurance information from the patient and verify the correct BCBS home plan before resubmitting the claim.

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BCBS CAA to CZZ Prefix Phone Numbers and Claims Filing Contacts

Each BCBS prefix in the CAA to CZZ range is associated with a claims phone number that connects providers and medical billers to the appropriate BCBS plan's claims department. The claims phone number is used to verify member eligibility, confirm plan details, obtain prior authorizations, and resolve claims issues. The phone numbers listed in the prefix tables are specific to the BCBS home plan identified by the prefix.

For example, the CAA prefix for CareFirst BlueCross BlueShield lists (800) 692-7459, while the CRA prefix for Capital Blue Cross lists (800) 962-2242. Billers should use the claims phone number associated with the specific prefix rather than a general BCBS number, as each independent BCBS licensee maintains its own claims processing operations and provider support lines.

Some prefixes in the CAA to CZZ range may not have a listed phone number. For these prefixes, billers should use the BCBS Plan Finder or contact the BCBS Association to obtain the correct claims filing contact. Keeping an updated record of claims phone numbers for frequently encountered prefixes improves billing efficiency and reduces the time spent on claim follow-up.

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Claims Filing Addresses for CAA to CZZ BCBS Prefixes

Claims filing addresses for the CAA to CZZ BCBS prefixes vary by the BCBS home plan associated with each prefix. Each independent BCBS licensee maintains its own claims processing address for paper claims and an electronic payer ID for electronic claims submissions. Medical billers must match the prefix on the member's insurance card to the correct BCBS home plan and use the corresponding claims filing address to submit claims. Using the wrong filing address results in claim rejections or significant processing delays.

chevron_right Electronic claims submission is the preferred method for most BCBS plans, using the payer ID associated with the home plan. Billers should verify the payer ID through the BCBS prefix directory or by contacting the claims phone number listed for the prefix.
chevron_right Paper claims mailing addresses are specific to the BCBS company and may differ based on the claim type (professional vs. institutional). Providers should consult the BCBS home plan's provider manual or website for the most current claims filing addresses.
chevron_right Submission requirements vary by BCBS licensee. Always confirm the correct filing format, timely filing deadlines, and required documentation before submitting claims for CAA to CZZ prefixes.

BCBS Plan Types Identified by CAA to CZZ Prefixes

The CAA to CZZ BCBS prefix range includes multiple plan types offered by Blue Cross Blue Shield companies. Each prefix identifies not only the home plan and state but also the type of insurance plan, which determines the network rules, coverage guidelines, and claims processing requirements.

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PPO (Preferred Provider Organization)

PPO plans identified by CAA to CZZ prefixes allow members to visit both in-network and out-of-network providers. In-network providers offer lower out-of-pocket costs, while out-of-network providers are covered at a reduced rate. PPO plans do not require referrals for specialist visits. Medical billers processing claims for PPO plans should verify whether the provider is in-network or out-of-network to apply the correct benefits and reimbursement rates.

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HMO (Health Maintenance Organization)

HMO plans in the CAA to CZZ prefix range require members to use in-network providers and obtain referrals from a primary care physician (PCP) for specialist care. HMO plans typically have lower premiums and out-of-pocket costs compared to PPO plans. Claims for HMO plans must be submitted to in-network providers, and services rendered by out-of-network providers are generally not covered except in emergencies. Billers must confirm that the referring PCP and the specialist are both in-network for the HMO plan.

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EPO (Exclusive Provider Organization)

EPO plans identified by CAA to CZZ prefixes require members to use in-network providers but do not require referrals for specialist visits. EPO plans combine elements of PPO and HMO plans by restricting coverage to in-network providers while eliminating the referral requirement. Out-of-network services are not covered except in emergencies. Billers must verify that the provider is in-network for the specific EPO plan before submitting claims.

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POS (Point of Service)

POS plans in the CAA to CZZ prefix range combine features of HMO and PPO plans. Members choose a primary care physician and can receive referrals to see specialists either in-network or out-of-network. In-network care is covered at a higher rate, while out-of-network care requires higher out-of-pocket costs. POS plans offer flexibility in provider choice while maintaining the structure of a managed care plan. Billers should verify referral requirements and network status when processing POS plan claims.

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How the Third Character in the Prefix Identifies the Plan Type?

The third character in a BCBS alpha prefix can provide additional information about the plan type or the specific product line within a BCBS company. While the BCBS prefix system primarily identifies the home plan and state, the third character may indicate whether the plan is a PPO, HMO, EPO, or a specialized product such as Medicare Advantage or a Federal Employee Program (FEP) plan. However, the third character's meaning is not standardized across all BCBS licensees, and its interpretation varies by company. Medical billers should not rely solely on the third character to determine the plan type. Instead, billers should verify the plan type by consulting the prefix directory, checking the member's insurance card, and confirming with the BCBS home plan's claims department.

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States and BCBS Companies Covered in the CAA to CZZ Prefix Range

The CAA to CZZ BCBS prefix range covers BCBS plans from multiple states across the United States. States represented in this range include Alabama, Alaska, Arizona, Arkansas, California, Colorado, Connecticut, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, New Jersey, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, Utah, Virginia, Washington, and Washington D.C. Each state has one or more independent BCBS licensees that operate within its borders.

Key BCBS Companies

BCBS companies covered in the CAA to CZZ range include CareFirst BlueCross BlueShield, Anthem Blue Cross Blue Shield (operating in multiple states including Ohio, Virginia, Indiana, Georgia, Wisconsin, Colorado, Connecticut, and Missouri), BCBS of Illinois, Wellmark BCBS, Blue Shield of California, Capital Blue Cross, Premera Blue Cross, Regence BCBS, Independence Blue Cross, Highmark BCBS, BCBS of Massachusetts, Florida Blue, BCBS of Texas, BCBS of North Carolina, and BCBS of Michigan. Each company holds an independent license from the Blue Cross Blue Shield Association to operate in its designated service area.

Anthem Blue Cross Blue Shield

Anthem operates across the largest number of states in the CAA to CZZ range, with prefixes assigned in Ohio, Virginia, Indiana, Georgia, Wisconsin, Colorado, Connecticut, Missouri, and California. Anthem's multi-state presence means billers may encounter Anthem prefixes frequently and should verify the specific state plan before routing claims.

CareFirst BlueCross BlueShield

CareFirst holds a significant number of prefixes in the C range, serving members in Maryland, Washington D.C., and Northern Virginia. CareFirst prefixes include CAA, CBA, CFI, CFO, CFU, CSD, CSO, CVD, CVT, CVV, and CWA.

Florida Blue

Florida Blue holds prefixes including CGY, CSC, CVB, CVJ, and CVK within the C range, covering HMO and PPO plans for Florida residents.

Premera Blue Cross

Premera Blue Cross serves Alaska and Washington with prefixes including CFX, CIR, CRJ, CRS, CTT, and CTW, offering HMO, PPO, and EPO plan types.

Regence BCBS

Regence BCBS operates across Oregon, Idaho, Utah, and Washington with prefixes including CIS, CSU, CUX, CUY, and CVL, providing PPO and HMO coverage across the Pacific Northwest.

Importance for Medical Billing

The distribution of prefixes across states and companies reflects the decentralized structure of the BCBS system. No single BCBS entity controls the entire prefix range. Instead, each licensee is assigned specific prefixes to identify its members and plans. Medical billers should use the prefix on the member's ID card as the primary identifier for determining which BCBS company and state to contact for claims processing and eligibility verification.

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CareFirst BlueCross BlueShield DC Prefixes in the C Range

CareFirst BlueCross BlueShield holds multiple prefixes within the CAA to CZZ range, including CAA, CBA, CFI, CFO, CFU, CSD, CSO, CVD, CVT, CVV, and CWA. Each prefix identifies a specific product line or plan category within CareFirst. The CAA prefix is the most widely recognized identifier for CareFirst BCBS, covering HMO, PPO, and POS plans. Additional prefixes such as CFI and CFO provide further granularity for plan identification and claims routing.

Medical billers working with CareFirst BCBS prefixes should use the specific claims phone number associated with each prefix. While the numbers may route to the same CareFirst claims department, using the correct prefix-specific number ensures that the call is directed to the appropriate team. CareFirst BCBS claims department can be reached at (800) 692-7459 for most CareFirst prefixes in the C range. Verifying the prefix before calling reduces hold times and improves claim resolution efficiency.

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Capital Blue Cross Pennsylvania Prefixes in the C Range

Capital Blue Cross holds multiple prefixes within the CAA to CZZ range, including CRA, CRC, and CTK. Each prefix identifies a specific product line or plan category within Capital Blue Cross. Capital Blue Cross serves central Pennsylvania and the Lehigh Valley, offering HMO, PPO, EPO, and POS plans. The CRA prefix is the most widely recognized identifier for Capital Blue Cross plans.

Medical billers working with Capital Blue Cross prefixes should use the claims phone number (800) 962-2242 for verifying member eligibility, confirming plan details, and resolving claims issues. Capital Blue Cross maintains its own claims processing operations independent of other Pennsylvania BCBS licensees such as Highmark BCBS and Independence Blue Cross. Billers should ensure they are routing claims to Capital Blue Cross and not to another Pennsylvania BCBS entity when processing claims with CRA, CRC, or CTK prefixes.

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How to Use CAA to CZZ Prefixes for Insurance Eligibility Verification?

Using BCBS alpha prefixes in the CAA to CZZ range for insurance eligibility verification follows a structured process. The CAA to CZZ prefix verification confirms patient coverage before healthcare services are rendered.

1 Obtain the Patient's Insurance Card

Request the patient's BCBS insurance card at check-in. The card displays the member ID, which begins with the three-character alpha prefix. Copy the prefix and full member ID accurately for verification purposes.

2 Identify the BCBS Home Plan Using the Prefix

Use the CAA to CZZ prefix lookup table to match the prefix to the corresponding BCBS home plan and state. The home plan identification determines which BCBS entity to contact for eligibility verification.

3 Contact the Claims Phone Number

Call the claims phone number listed in the prefix table for the identified home plan. Provide the member ID and prefix to the representative to verify the patient's eligibility, coverage status, and benefits.

4 Confirm Plan Type and Network Status

During the verification call, confirm the plan type (PPO, HMO, EPO, POS, Medicare Advantage, or Medicaid) and whether the provider is in-network for the patient's plan. Network status affects coverage levels and reimbursement rates.

5 Document the Verification Results

Record the verification reference number, the representative's name, and the confirmed coverage details. Documentation supports claim submission and provides evidence of eligibility verification in case of disputes or audits.

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How to Route Claims Using the CAA to CZZ BCBS Prefix?

Routing claims using the CAA to CZZ BCBS prefix follows a systematic approach for accurate processing.

1 Read the Prefix from the Member ID Card — Identify the three-character alpha prefix at the beginning of the member's ID number on their BCBS insurance card. The prefix is the key routing identifier for all BCBS claims.
2 Look Up the Prefix in the CAA to CZZ Table — Find the prefix in the assignment table to identify the BCBS home plan, state, plan type, and claims phone number. This information determines where the claim should be routed.
3 Determine the Correct Payer ID or Filing Address — Based on the home plan identified, obtain the correct electronic payer ID for electronic claims or the mailing address for paper claims. The payer ID and filing address are specific to the BCBS home plan associated with the prefix.
4 Submit the Claim with the Correct Prefix and Member ID — Submit the claim using the full member ID (including the three-character prefix) to the identified payer. Ensure the claim form references the correct prefix, as an incorrect or missing prefix will result in claim rejection or misdirection to the wrong BCBS plan.

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Common Questions

What Are BCBS Prefixes?

BCBS prefixes are three-character alphabetic codes that appear at the beginning of a Blue Cross Blue Shield member's insurance ID number. Each prefix identifies the BCBS home plan (the specific BCBS company that issued the insurance), the state where the plan is based, and the general plan type. The prefix system enables medical billers and healthcare providers to quickly identify which BCBS entity is responsible for processing claims and verifying member eligibility. The BCBS Association assigns prefixes to its independent licensees, and the complete prefix directory spans from AAA through ZZZ.

How Do You Identify a Blue Prefix?

The Blue prefix on an insurance card is the first three alphabetic characters of the member ID number, located on the front of the BCBS insurance card. The prefix is always composed of three letters (no numbers) and is followed by additional alphanumeric characters that form the complete member ID. To identify the prefix, look at the member ID field and isolate the first three letters. These three letters are the BCBS alpha prefix that maps to a specific home plan, state, and claims routing destination.

Does CAA to CZZ Include Alphanumeric?

The CAA to CZZ prefix range consists exclusively of three-letter alphabetic codes. BCBS alpha prefixes are composed of letters only and do not include numbers. However, the broader BCBS identification system may include alphanumeric characters in the full member ID that follows the three-letter prefix. The prefix itself, within the CAA to CZZ range, is strictly alphabetic. If a member's ID card appears to have numbers in the first three characters, it may indicate a non-standard card format or a different insurance system.

Are There Rules for Assigning?

The Blue Cross Blue Shield Association assigns alpha prefixes to its independent licensees according to internal assignment rules. The first character of the prefix often corresponds to a geographic region or a specific BCBS company, but this pattern is not universally consistent. Some BCBS companies hold multiple prefixes to distinguish between different plan types, product lines, or geographic sub-regions. Prefixes may be reassigned or retired as BCBS companies merge, restructure, or expand their product offerings. The assignment rules are managed by the BCBS Association, and the complete prefix directory is the authoritative source for current assignments.

Can a Prefix Belong to Multiple States?

A BCBS prefix in the CAA to CZZ range can be associated with a BCBS company that operates across multiple states. For example, the CAB prefix is assigned to Anthem Blue Cross Blue Shield, which operates in several states. In such cases, the prefix identifies the parent BCBS company rather than a single state. However, each prefix is assigned to one BCBS licensee, even if that licensee serves multiple states. Medical billers should verify the specific state and plan details by consulting the prefix directory or contacting the BCBS company associated with the prefix to determine the correct claims routing and eligibility information.

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Disclaimer

The information provided on this page is for educational and reference purposes only. This content is not affiliated with, endorsed by, or officially connected to the Blue Cross Blue Shield Association or any of its independent licensees. BCBS prefix assignments, plan details, claims phone numbers, and filing addresses are subject to change without notice. Medical billers and healthcare providers should verify all BCBS prefix list information against the official BCBS Plan Finder and contact the appropriate BCBS plan directly before submitting claims. This resource should not be used as the sole basis for claims submission or eligibility verification. Always cross-reference with current, authoritative sources.