BCBS Alpha Prefix MAA to MZZ

The BCBS alpha prefix range from MAA to MZZ represents a segment of the Blue Cross Blue Shield (BCBS) insurance identification system. The MAA to MZZ prefixes are the first three characters on member ID cards and identify the BCBS home plan associated with a member. The MAA to MZZ range covers multiple states and BCBS companies, including prefixes like MBR for BCBS of Michigan and MEE for BCBS of Massachusetts. Medical billers and providers use the MAA to MZZ prefixes to route claims, verify insurance eligibility, and process reimbursements.

The MAA to MZZ prefix range maps each prefix to a BCBS company and state, enabling precise claims filing. MBR corresponds to BCBS of Michigan, while MDZ is linked to BCBS of Minnesota. The MAA to MZZ prefix mapping determines the correct claims submission address or phone number, preventing delays in processing. The MAA to MZZ range is part of the complete BCBS prefix directory, which spans from AAA through ZZZ and covers all assigned prefixes.

Understanding the MAA to MZZ prefix range is essential for healthcare providers who frequently process claims for BCBS members across Michigan, Massachusetts, Minnesota, and other states represented in this range. Accurate prefix identification reduces claim denials and accelerates reimbursement timelines for medical practices and billing departments.

table_chart

BCBS Prefix MAA to MEZ Assignment Table

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

Prefix	BCBS Home Plan Name	State	Plan Type	Claims Phone Number
MAA	Wellmark BCBS	South Dakota/Iowa	PPO, HMO, EPO	(800) 524-9242
MAB	Florida Blue	Florida	PPO, HMO	(800) 352-2583
MAC	CareFirst BCBS	Maryland/DC/N. Virginia	PPO, EPO	(800) 692-7459
MDY	BCBS of Kansas City	Missouri/Kansas	PPO	(816) 395-2222
MDZ	BCBS of Minnesota	Minnesota	PPO, HMO, EPO	(800) 292-9371
MEA	Blue Shield of California	California	PPO, HMO, EPO	(800) 676-2583
MEB	Anthem BCBS of Maine	Maine	PPO, HMO	(800) 331-1475
MEC	Anthem BCBS of Virginia	Virginia	PPO, EPO	(800) 331-1475
MED	Anthem BCBS of Ohio	Ohio	PPO, HMO, EPO	(800) 331-1475
MEE	BCBS of Massachusetts	Massachusetts	PPO, HMO	(800) 262-0820
MEQ	Blue Shield of California	California	PPO, HMO, EPO	(800) 676-2583
MER	Anthem BCBS of Wisconsin	Wisconsin	PPO, HMO	(800) 331-1475
MES	BCBS of Oklahoma	Oklahoma	PPO	(800) 942-5837
MET	BCBS of Nebraska	Nebraska	PPO, HMO	(800) 432-3990
MEU	BCBS of Texas	Texas	PPO, EPO	(800) 521-9628
MEV	Anthem BCBS of Connecticut	Connecticut	PPO, HMO	(800) 424-8730
MEW	Anthem BCBS of Maine	Maine	PPO	(800) 331-1475
MEX	BCBS of New Mexico	New Mexico	PPO, HMO	(800) 835-8699
MEY	Anthem BCBS of Maine	Maine	PPO	(800) 331-1475
MEZ	BCBS of New Mexico	New Mexico	PPO, HMO	(800) 835-8699

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

local_hospital

BCBS Prefix MBR BCBS of Michigan

The BCBS prefix MBR is assigned to Blue Cross Blue Shield of Michigan (BCBSM). The MBR prefix serves as a primary identifier for members enrolled in BCBSM plans. BCBSM plans under the MBR prefix include Preferred Provider Organization (PPO), Health Maintenance Organization (HMO), and Traditional Indemnity. The MBR prefix appears on member insurance cards, directing healthcare providers to route claims to the Michigan-based BCBS entity.

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

table_chart

BCBS Prefix MFA to MKZ Assignment Table

The BCBS Prefix MFA to MKZ Assignment Table lists the Blue Cross Blue Shield alpha prefixes between MFA and MKZ. The MFA to MKZ 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
MFA	BCBS of Illinois	Illinois	PPO, HMO	(800) 233-1474
MFB	BCBS of Michigan	Michigan	PPO, HMO	(800) 482-3276
MFC	BCBS of Texas	Texas	PPO, HMO	(800) 521-9628
MFD	BCBS of Illinois	Illinois	PPO, HMO	(800) 233-1474
MFE	Anthem BCBS	Multiple States	PPO, HMO	(800) 331-1475
MFF	BCBS of Minnesota	Minnesota	PPO, HMO	(800) 292-9371
MFG	BCBS of Illinois	Illinois	PPO, HMO	(800) 233-1474
MFH	BCBS of Massachusetts	Massachusetts	PPO, HMO	(800) 262-0820
MGA	CareFirst BCBS	Maryland/DC/N. Virginia	PPO, HMO	(800) 692-7459
MKA	BCBS of Michigan	Michigan	PPO, HMO	(800) 482-3276

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

table_chart

BCBS Prefix MLA to MPZ Assignment Table

The BCBS Alpha Prefix MLA to MPZ Assignment Table provides information for medical billing and claims processing. The MLA to MPZ 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
MLA	BCBS of Michigan	Michigan	PPO, HMO	(800) 482-3276
MLB	BCBS of Illinois	Illinois	PPO, HMO	(800) 233-1474
MLC	BCBS of Massachusetts	Massachusetts	PPO, HMO	(800) 262-0820
MLD	BCBS of Texas	Texas	PPO, HMO	(800) 521-9628
MLE	Florida Blue	Florida	PPO, HMO	(800) 352-2583
MLF	Anthem BCBS of Virginia	Virginia	PPO, HMO, EPO	(800) 331-1475
MLG	Anthem BCBS of Indiana	Indiana	PPO, HMO	(800) 533-2583
MLH	BCBS of Minnesota	Minnesota	PPO, HMO	(800) 292-9371
MLI	Anthem BCBS of Wisconsin	Wisconsin	PPO, HMO	(800) 331-1475
MLJ	CareFirst BCBS	Maryland/DC/N. Virginia	PPO, HMO	(800) 692-7459
MLK	BCBS of North Carolina	North Carolina	PPO, HMO	(800) 672-7897
MLL	Anthem BCBS of Virginia	Virginia	PPO, HMO	(800) 331-1475
MLM	BCBS of Vermont	Vermont	PPO, HMO	(800) 255-4550
MLN	Highmark BCBS of Pennsylvania	Pennsylvania	PPO, HMO	(800) 541-1524
MLO	Premera BCBS of Alaska	Alaska	PPO, HMO	(800) 508-4722
MLP	Regence BCBS	Oregon/Washington	PPO, HMO	(888) 248-2595

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

table_chart

BCBS Prefix MRA to MZZ Assignment Table

The BCBS prefix range from MRA to MZZ covers Blue Cross Blue Shield plans across multiple states. The MRA to MZZ 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
MRA	BCBS of Illinois	Illinois	PPO, HMO, EPO	(800) 233-1474
MRB	BCBS of Texas	Texas	PPO, HMO, POS	(800) 521-9628
MRC	Empire BCBS	New York	PPO, EPO, HDHP	(800) 553-9603
MRD	Anthem BCBS	California	PPO, HMO, HDHP	(800) 288-9294
MRE	CareFirst BCBS	Maryland/DC/N. Virginia	PPO, Medicare Advantage	(800) 692-7459
MRF	BCBS of Michigan	Michigan	PPO, HMO, Traditional Indemnity	(800) 482-3276
MRG	BCBS of Minnesota	Minnesota	EPO, Medicare Advantage, HDHP	(800) 292-9371
MSJ	Premera Blue Cross	Alaska	HMO, POS, PPO	(800) 508-4722
MXH	CareFirst BCBS	Maryland/DC/N. Virginia	PPO, HDHP, Traditional Indemnity	(800) 692-7459
MYY	CareFirst BCBS	Maryland/DC/N. Virginia	PPO, Medicare Advantage, Medicaid	(800) 692-7459

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

help

What Are the BCBS Alpha Prefixes from MAA to MZZ?

The BCBS alpha prefixes from MAA to MZZ are three-character codes assigned to Blue Cross Blue Shield insurance plans. Each prefix in the MAA to MZZ range identifies the BCBS home plan, the state of origin, and the plan type (such as PPO, HMO, EPO, or POS). The MAA to MZZ 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 MAA to MZZ 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 MBR for BCBS of Michigan or MEE for BCBS of Massachusetts. The prefix system standardizes the identification of BCBS plans for claims processing and provider services.

Not all prefixes in the MAA to MZZ 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.

corporate_fare

Which BCBS Companies Use Prefixes in the MAA to MZZ Range?

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

health_and_safety Blue Cross Blue Shield of Michigan — Prefixes include MBR, MFA, MKA, MLA, and MRF, covering PPO, HMO, and Traditional Indemnity plans in Michigan.
health_and_safety Blue Cross Blue Shield of Massachusetts — Prefixes include MEE, MFH, and MLC, covering PPO and HMO plans in Massachusetts.
health_and_safety Blue Cross Blue Shield of Minnesota — Prefixes include MDZ, MFF, MLH, and MRG, covering PPO, HMO, EPO, Medicare Advantage, and HDHP plans in Minnesota.
health_and_safety CareFirst BlueCross BlueShield — Prefixes include MAC, MGA, MLJ, MRE, MXH, and MYY, covering PPO, EPO, HDHP, Medicare Advantage, and Medicaid plans in the Maryland, Washington D.C., and Virginia region.
health_and_safety Blue Cross Blue Shield of Illinois — Prefixes include MFA, MFD, MFG, MLB, and MRA, covering PPO, HMO, and EPO plans in Illinois.

These companies represent a portion of the independent BCBS licensees with prefixes in the MAA to MZZ 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.

menu_book

How to Read the BCBS MAA to MZZ Prefix Table?

Reading the BCBS MAA to MZZ prefix table follows a systematic approach for accurate claims processing. The MAA to MZZ 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 member prefix is the first set of letters in the member ID.

2 Match the Prefix

Scan the 'Prefix' column in the MAA to MZZ 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 MAA to MZZ Range?

Looking up a BCBS prefix in the MAA to MZZ 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.

verified_user

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.

warning

What to Do When the MAA to MZZ Prefix Is Not in the Table?

When a BCBS prefix in the MAA to MZZ 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.

phone

BCBS MAA to MZZ Prefix Phone Numbers and Claims Filing Contacts

Each BCBS prefix in the MAA to MZZ 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.

business

Key BCBS Companies

For example, the MBR prefix for BCBS of Michigan lists (800) 482-3276, while the MEE prefix for BCBS of Massachusetts lists (800) 262-0820. 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.

receipt_long

Practical Billing Details

Some prefixes in the MAA to MZZ 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.

markunread_mailbox

Claims Filing Addresses for MAA to MZZ BCBS Prefixes

Claims filing addresses for the MAA to MZZ 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.

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. For paper claims, the mailing address is 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 and submission requirements.

BCBS Plan Types Identified by MAA to MZZ Prefixes

The MAA to MZZ 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.

domain

PPO (Preferred Provider Organization)

PPO plans identified by MAA to MZZ 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.

hub

HMO (Health Maintenance Organization)

HMO plans in the MAA to MZZ 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.

shield

EPO (Exclusive Provider Organization)

EPO plans identified by MAA to MZZ 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.

swap_horiz

POS (Point of Service)

POS plans in the MAA to MZZ 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.

text_format

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.

map

States and BCBS Companies Covered in the MAA to MZZ Prefix Range

The MAA to MZZ BCBS prefix range covers BCBS plans from multiple states across the United States. States represented in this range include Alaska, California, Connecticut, Florida, Illinois, Indiana, Iowa, Kansas, Maine, Maryland, Massachusetts, Michigan, Minnesota, Missouri, Nebraska, New Mexico, New York, North Carolina, Ohio, Oklahoma, Oregon, Pennsylvania, South Dakota, Texas, Vermont, Virginia, Washington, Washington D.C., and Wisconsin. Each state has one or more independent BCBS licensees that operate within its borders.

BCBS companies covered in the MAA to MZZ range include BCBS of Michigan, BCBS of Massachusetts, BCBS of Minnesota, BCBS of Illinois, Anthem Blue Cross Blue Shield (operating in multiple states including Ohio, Connecticut, Virginia, Indiana, Maine, and Wisconsin), Blue Shield of California, Anthem Blue Cross of California, BCBS of Texas, CareFirst BCBS, Wellmark BCBS, Empire BCBS, Premera Blue Cross, Regence BCBS, Highmark BCBS, BCBS of Kansas City, BCBS of Nebraska, BCBS of Oklahoma, BCBS of New Mexico, and Florida Blue. Each company holds an independent license from the Blue Cross Blue Shield Association to operate in its designated service area.

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.

assured_workload

Blue Cross Blue Shield of Michigan Prefixes in the M Range

Blue Cross Blue Shield of Michigan holds multiple prefixes within the MAA to MZZ range, including MBR, MFB, MKA, MLA, and MRF. Each prefix identifies a specific product line or plan category within BCBSM. The MBR prefix is the most widely recognized identifier for BCBSM, covering PPO, HMO, and Traditional Indemnity plans. Additional prefixes such as MFB (PPO, HMO) and the MKA and MLA prefixes provide further granularity for plan identification and claims routing.

Medical billers working with Michigan-based BCBS prefixes should use the specific claims phone number associated with each prefix. While the numbers may route to the same BCBSM claims department, using the correct prefix-specific number ensures that the call is directed to the appropriate team. BCBS of Michigan's claims department can be reached at (800) 482-3276 for most Michigan prefixes in the M range. Verifying the prefix before calling reduces hold times and improves claim resolution efficiency.

assured_workload

Blue Cross Blue Shield of Massachusetts Prefixes in the M Range

Blue Cross Blue Shield of Massachusetts holds prefixes within the MAA to MZZ range, including MEE, MFH, and MLC. Each prefix identifies a specific product line or plan category within BCBSMA. The MEE prefix is a primary identifier for BCBSMA, covering PPO and HMO plans. The MFH and MLC prefixes provide additional plan identification for claims routing within the Massachusetts BCBS system.

Medical billers working with Massachusetts-based BCBS prefixes should contact the BCBS of Massachusetts claims department at (800) 262-0820 for eligibility verification and claims inquiries. Verifying the prefix and plan type before submitting claims ensures accurate routing and reduces the likelihood of claim denials or processing delays.

assured_workload

Blue Cross Blue Shield of Minnesota Prefixes in the M Range

Blue Cross Blue Shield of Minnesota holds prefixes within the MAA to MZZ range, including MDZ, MFF, MLH, and MRG. Each prefix identifies a specific product line or plan category within BCBSMN. The MDZ prefix covers PPO, HMO, and EPO plans, while the MRG prefix is associated with EPO, Medicare Advantage, and HDHP plans. The MFF and MLH prefixes provide additional plan identification for standard PPO and HMO offerings.

Medical billers working with Minnesota-based BCBS prefixes should contact the BCBS of Minnesota claims department at (800) 292-9371 for eligibility verification and claims inquiries. Minnesota prefixes in the M range cover a broad spectrum of plan types including Medicare Advantage and High Deductible Health Plans (HDHP), requiring billers to verify the specific plan type before processing claims.

fact_check

How to Use MAA to MZZ Prefixes for Insurance Eligibility Verification?

Using BCBS alpha prefixes in the MAA to MZZ range for insurance eligibility verification follows a structured process. The MAA to MZZ 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 MAA to MZZ 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.

route

How to Route Claims Using the MAA to MZZ BCBS Prefix?

Routing claims using the MAA to MZZ 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 MAA to MZZ 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.

quiz

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 MAA to MZZ Include Alphanumeric?

The MAA to MZZ 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 MAA to MZZ 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 MAA to MZZ range can be associated with a BCBS company that operates across multiple states. For example, the MFE 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.

info

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.