BCBS Alpha Prefix List from MAA to MZZ Updated 2022

BCBS Alpha Prefix List of “M”-series Blue Cross Blue Shield insurance Companies – Statewise
MAA Wellmark
MAB Florida (FL) Blue
MAC
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MAD Premera BCBS of Alaska (AK)
MAE Anthem BCBS of Indiana (IN)
MAF
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MAG BCBS of New Mexico (NM)
MAH Anthem BCBS of Virginia (VA)
MAI Wellmark
MAJ Not Assigned prefix
MAK Anthem BCBS of Kentucky (KY)
MAL
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MAM
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MAN Not Assigned prefix
MAO Florida (FL) Blue
MAP Anthem BCBS of Colorado (CO)
MAQ Florida (FL) Blue
MAR Anthem BCBS of Georgia (GA)
MAS Anthem BCBS of Georgia (GA)
MAT BCBS of Texas (TX)
MAU Wellmark
MAV Anthem BCBS of Ohio (OH)
MAW Anthem BCBS of Connecticut (CT)
MAX BCBS of Illinois (IL)
MAY BCBS of Nebraska (NE)
MAZ Wellmark
MBA Anthem BCBS of Ohio (OH)
MBB Not Assigned prefix
MBC BCBS of Tennessee (TN)
MBD
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MBE BCBS of Nebraska (NE)
MBF Anthem BCBS of Georgia (GA)
MBG BCBS of Alabama (AL)
MBH BCBS of Alabama (AL)
MBI BCBS Blue Care Network Michigan (MI)
MBJ Regence BCBS
MBK Empire BCBS of New York (NY)
MBL BCBS Prefix Anthem Blue Cross(BC) of California (CA)
MBM BCBS of Illinois (IL)
MBN BCBS Blue Care Network Michigan (MI)
MBO Florida (FL) Blue
MBP Anthem BCBS of Indiana (IN)
MBQ Not Assigned prefix
MBR Anthem Blue Cross(BC) of California (CA)
MBS
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MBT Anthem BCBS of Missouri (MO)
MBU BCBS of Massachusetts (MA)
MBV
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MBW Anthem BCBS of Ohio (OH)
MBX BCBS of South Carolina (SC) / Southcarolinablues
MBY BCBS of South Carolina (SC) / Southcarolinablues
MBZ
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MCA Blue shield(BS) of California (CA)
MCB BCBS of Kansas City
MCC BCBS of Texas (TX)
MCD BCBS of Illinois (IL)
MCE Premera BCBS of Alaska (AK)
MCF
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MCG
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MCH Florida (FL) Blue
MCI Anthem BCBS of Georgia (GA)
MCJ Highmark BCBS of Western Virginia (WV)
MCK Wellmark
MCL Wellmark
MCM Arkansas (AR) Blue Cross
MCN Wellmark
MCO BCBS Prefix Anthem BCBS of Virginia (VA)
MCP Not Assigned prefix
MCQ BCBS of Illinois (IL)
MCR
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MCS
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MCT Wellmark
MCU BCBS of North Carolina (NC)
MCV Wellmark
MCW Wellmark
MCX BCBS of Massachusetts (MA)
MCY Anthem BCBS of Virginia (VA)
MCZ Anthem BCBS of Indiana (IN)
MDA BCBS Blue Care Network Michigan (MI)
MDB Not Assigned prefix
MDC BCBS Prefix BCBS of Minnesota (MN)
MDD Not Assigned prefix
MDE Anthem Blue Cross(BC) of California (CA)
MDF
Independence Blue Cross(BC) of Philadelphia(Phi) and the Southeastern Pennsylvania(PA)
MDG BCBS Blue Care Network Michigan (MI)
MDH BCBS of Rhode Island the (RI)
MDI Wellmark
MDJ Anthem BCBS of Indiana (IN)
MDK Not Assigned prefix
MDL Not Assigned prefix
MDM
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MDN Anthem BCBS of Wisconsin (WI)
MDO Not Assigned prefix
MDP Blue shield(BS) of California (CA)
MDQ BCBS of Minnesota (MN)
MDR Anthem BCBS of Wisconsin (WI)
MDS
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MDT
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MDU Wellmark
MDV BCBS of Louisiana(LA)
MDW Wellmark
MDX Not Assigned prefix
MDY BCBS of Kansas City
MDZ BCBS of Minnesota (MN)
MEA Blue shield(BS) of California (CA)
MEB Not Assigned prefix
MEC Anthem BCBS of Virginia (VA)
MED Anthem BCBS of Indiana (IN)
MEE Anthem BCBS of Virginia (VA)
MEF Not Assigned prefix
MEG Anthem BCBS of Georgia (GA)
MEH Not Assigned prefix
MEI BCBS Blue Care Network Michigan (MI)
MEJ
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MEK Blue shield(BS) of California (CA)
MEL Wellmark
MEM Wellmark
MEN Anthem BCBS of Maine (ME)
MEO Blue shield(BS) of California (CA)
MEP Anthem BCBS of Maine (ME)
MEQ Blue shield(BS) of California (CA)
MER Not Assigned prefix
MES BCBS of Oklahoma (OK)
MET BCBS of Nebraska (NE)
MEU BCBS of Texas (TX)
MEV Not Assigned prefix
MEW Anthem BCBS of Maine (ME)
MEX BCBS of New Mexico (NM)
MEY Anthem BCBS of Maine (ME)
MEZ BCBS of New Mexico (NM)
MFA BCBS of Illinois (IL)
MFB Wellmark
MFC Anthem BCBS of Georgia (GA)
MFD Anthem BCBS of Georgia (GA)
MFE Anthem Blue Cross(BC) of California (CA)
MFF Regence BCBS
MFG Anthem BCBS of Ohio (OH)
MFH Anthem BCBS of Georgia (GA)
MFI Wellmark
MFJ Not Assigned prefix
MFK
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MFL
Independence Blue Cross(BC) of Philadelphia(Phi) and the Southeastern Pennsylvania(PA)
MFM Anthem BCBS of Georgia (GA)
MFN Anthem BCBS of Virginia (VA)
MFO Not Assigned prefix
MFP Regence BCBS
MFQ Anthem BCBS of Virginia (VA)
MFR Not Assigned prefix
MFS
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MFT Not Assigned prefix
MFU Wellmark
MFV BCBS of Illinois (IL)
MFW Anthem Blue Cross(BC) of California (CA)
MFX BCBS Blue Care Network Michigan (MI)
MFY BCBS of Minnesota (MN)
MFZ BCBS of Illinois (IL)
MGA Blue shield(BS) of California (CA)
MGB Capital Blue Cross of Pennsylvania (PA)
MGC BCBS of Illinois (IL)
MGD Premera BCBS of Alaska (AK)
MGE BCBS of Rhode Island the (RI)
MGF Not Assigned prefix
MGG Blue shield(BS) of California (CA)
MGH Not Assigned prefix
MGI Highmark BCBS of Pennsylvania (PA)
MGJ Anthem BCBS of Missouri (MO)
MGK Wellmark
MGL
Independence Blue Cross(BC) of Philadelphia(Phi) and the Southeastern Pennsylvania(PA)
MGM
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MGN Not Assigned prefix
MGO BCBS Blue Care Network Michigan (MI)
MGP Wellmark
MGQ Not Assigned prefix
MGR BCBS Blue Care Network Michigan (MI)
MGS Anthem BCBS of Georgia (GA)
MGT Regence BCBS
MGU Anthem BCBS of Virginia (VA)
MGV BCBS of South Carolina (SC) / Southcarolinablues
MGW Arkansas (AR) Blue Cross
MGX Not Assigned prefix
MGY Blue shield(BS) of California (CA)
MGZ Horizon BCBS of New Jersey (NJ)
MHA BCBS of Kansas City
MHB BCBS of Texas (TX)
MHC Highmark BCBS of Pennsylvania (PA)
MHD Not Assigned prefix
MHE Not Assigned prefix
MHF Not Assigned prefix
MHG Anthem Blue Cross(BC) of California (CA)
MHH BCBS Blue Care Network Michigan (MI)
MHI Anthem BCBS of Georgia (GA)
MHJ Not Assigned prefix
MHK Wellmark
MHL Not Assigned prefix
MHM
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MHN Anthem BCBS of Ohio (OH)
MHO Not Assigned prefix
MHP Empire BCBS of New York (NY)
MHQ Anthem BCBS of Georgia (GA)
MHR Not Assigned prefix
MHS Not Assigned prefix
MHT
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MHU Not Assigned prefix
MHV Not Assigned prefix
MHW BCBS of Alabama (AL)
MHX Not Assigned prefix
MHY Anthem Blue Cross(BC) of California (CA)
MHZ Wellmark
MIA Blue shield(BS) of California (CA)
MIB BCBS of Minnesota (MN)
MIC BCBS of South Carolina (SC) / Southcarolinablues
MID Not Assigned prefix
MIE BCBS of Minnesota (MN)
MIF Anthem BCBS of Ohio (OH)
MIG BCBS Blue Care Network Michigan (MI)
MIH Not Assigned prefix
MII BCBS of Kansas City
MIJ BCBS Blue Care Network Michigan (MI)
MIK Not Assigned prefix
MIL BCBS of Massachusetts (MA)
MIM Highmark BCBS of Pennsylvania (PA)
MIN Premera BCBS of Alaska (AK)
MIO Blue shield(BS) of California (CA)
MIP Blue Cross (BC) of Idaho (ID)
MIQ Anthem BCBS of Ohio (OH)
MIR Not Assigned prefix
MIS Anthem BCBS of Ohio (OH)
MIT Wellmark
MIU BCBS of South Carolina (SC) / Southcarolinablues
MIV BCBS of Western New York (WNY)
MIW BCBS Blue Care Network Michigan (MI)
MIX Not Assigned prefix
MIY Not Assigned prefix
MIZ Blue shield(BS) of California (CA)
MJA Not Assigned prefix
MJB Anthem BCBS of Colorado (CO)
MJC BCBS of Texas (TX)
MJD BCBS of Alabama (AL)
MJE BCBS Blue Care Network Michigan (MI)
MJF
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MJG Premera BCBS of Alaska (AK)
MJH Anthem BCBS of Wisconsin (WI)
MJI
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MJJ BCBS Blue Care Network Michigan (MI)
MJK
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MJL Anthem Blue Cross(BC) of California (CA)
MJM Highmark BCBS of Pennsylvania (PA)
MJN Highmark BCBS of Pennsylvania (PA)
MJO Anthem BCBS of Connecticut (CT)
MJP Wellmark
MJQ Anthem Blue Cross(BC) of California (CA)
MJR BCBS Blue Care Network Michigan (MI)
MJS BCBS of Tennessee (TN)
MJT Anthem BCBS of Wisconsin (WI)
MJU BCBS Blue Care Network Michigan (MI)
MJV Anthem BCBS of Wisconsin (WI)
MJW Not Assigned prefix
MJX BCBS Blue Care Network Michigan (MI)
MJY Not Assigned prefix
MJZ Not Assigned prefix
MKA Wellmark
MKB Blue shield(BS) of California (CA)
MKC BCBS of South Carolina (SC) / Southcarolinablues
MKD Bcbs Prefix BCBS of Massachusetts (MA)
MKE BCBS of Tennessee (TN)
MKF Not Assigned prefix
MKG Anthem BCBS of Ohio (OH)
MKH BCBS of Tennessee (TN)
MKI BCBS of Tennessee (TN)
MKJ Anthem BCBS of Ohio (OH)
MKK Anthem Blue Cross(BC) of California (CA)
MKL BCBS of Mississippi (MS)
MKM
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MKN Not Assigned prefix
MKO BCBS Blue Care Network Michigan (MI)
MKP BCBS Blue Care Network Michigan (MI)
MKQ Not Assigned prefix
MKR BCBS of Illinois (IL)
MKS BCBS of Massachusetts (MA)
MKT Wellmark
MKU Premera BCBS of Alaska (AK)
MKV Horizon BCBS of New Jersey (NJ)
MKW Wellmark
MKX Not Assigned prefix
MKY Horizon BCBS of New Jersey (NJ)
MKZ
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MLA Wellmark
MLB Not Assigned prefix
MLC Not Assigned prefix
MLD Not Assigned prefix
MLE BCBS of Illinois (IL)
MLF
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MLG Highmark BCBS of Pennsylvania (PA)
MLH Not Assigned prefix
MLI
Independence Blue Cross(BC) of Philadelphia(Phi) and the Southeastern Pennsylvania(PA)
MLJ
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MLK Anthem BCBS of Virginia (VA)
MLL Blue shield(BS) of California (CA)
MLM Highmark BCBS of Pennsylvania (PA)
MLN Blue shield(BS) of California (CA)
MLO BCBS of Western New York (WNY)
MLP Anthem BCBS of Virginia (VA)
MLQ BCBS of Minnesota (MN)
MLR BCBS of Massachusetts (MA)
MLS Not Assigned prefix
MLT BCBS of Nebraska (NE)
MLU BCBS of Minnesota (MN)
MLV BCBS of Minnesota (MN)
MLW Not Assigned prefix
MLX Not Assigned prefix
MLY Premera BCBS of Alaska (AK)
MLZ BCBS of Rhode Island the (RI)
MMA Empire BCBS of New York (NY)
MMB
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MMC Not Assigned prefix
MMD Premera BCBS of Alaska (AK)
MME
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MMF Excellus BCBS of New York (NY)
MMG BCBS of Mississippi (MS)
MMH Empire BCBS of New York (NY)
MMI
Independence Blue Cross(BC) of Philadelphia(Phi) and the Southeastern Pennsylvania(PA)
MMJ BCBS Blue Care Network Michigan (MI)
MMK BCBS of Illinois (IL)
MML BCBS of Illinois (IL)
MMM BCBS of Minnesota (MN)
MMN BCBS of Minnesota (MN)
MMO BCBS Blue Care Network Michigan (MI)
MMP Not Assigned prefix
MMQ Anthem BCBS of Indiana (IN)
MMR BCBS of Massachusetts (MA)
MMS Anthem BCBS of Ohio (OH)
MMT Blue shield(BS) of California (CA)
MMU BCBS of Illinois (IL)
MMV Anthem BCBS of Ohio (OH)
MMW BCBS of Illinois (IL)
MMX BCBS of Alabama (AL)
MMY Anthem BCBS of Indiana (IN)
MMZ Wellmark
MNA BCBS of Minnesota (MN)
MNB BCBS of Massachusetts (MA)
MNC Anthem Blue Cross(BC) of California (CA)
MND Anthem BCBS of Wisconsin (WI)
MNE Anthem BCBS of Wisconsin (WI)
MNF
Independence Blue Cross(BC) of Philadelphia(Phi) and the Southeastern Pennsylvania(PA)
MNG BCBS of Tennessee (TN)
MNH Anthem BCBS of Virginia (VA)
MNI Not Assigned prefix
MNJ Anthem BCBS of Ohio (OH)
MNK Anthem BCBS of Ohio (OH)
MNL Not Assigned prefix
MNM Not Assigned prefix
MNN Highmark BCBS of Pennsylvania (PA)
MNO Not Assigned prefix
MNP Blue shield(BS) of California (CA)
MNQ BCBS of Minnesota (MN)
MNR BCBS of Minnesota (MN)
MNS Anthem BCBS of Kentucky (KY)
MNT BCBS of Illinois (IL)
MNU BCBS of North Carolina (NC)
MNV Not Assigned prefix
MNW Premera BCBS of Alaska (AK)
MNX BCBS of Illinois (IL)
MNY Premera Blue Cross (BC) of Alaska (AK)
MNZ Wellmark
MOA Not Assigned prefix
MOB Not Assigned prefix
MOC Anthem BCBS of Georgia (GA)
MOD BCBS of Massachusetts (MA)
MOE BCBS of Illinois (IL)
MOF Blue shield(BS) of California (CA)
MOG BCBS of Western New York (WNY)
MOH Not Assigned prefix
MOI BCBS of Massachusetts (MA)
MOJ Anthem BCBS of Ohio (OH)
MOK Bcbs Prefix
Independence Blue Cross(BC) of Philadelphia(Phi) and the Southeastern Pennsylvania(PA)
MOL Not Assigned prefix
MOM Not Assigned prefix
MON Not Assigned prefix
MOO Not Assigned prefix
MOP Not Assigned prefix
MOQ
Independence Blue Cross(BC) of Philadelphia(Phi) and the Southeastern Pennsylvania(PA)
MOR Premera BCBS of Alaska (AK)
MOS Blue shield(BS) of California (CA)
MOT Not Assigned prefix
MOU BCBS Blue Care Network Michigan (MI)
MOV Arkansas (AR) Blue Cross
MOW Anthem BCBS of Kentucky (KY)
MOX Not Assigned prefix
MOY Wellmark
MOZ Not Assigned prefix
MPA Anthem BCBS of Ohio (OH)
MPB Anthem BCBS of Georgia (GA)
MPC BCBS of Rhode Island the (RI)
MPD BCBS of Texas (TX)
MPE BCBS Blue Care Network Michigan (MI)
MPF Excellus BCBS of New York (NY)
MPG
Independence Blue Cross(BC) of Philadelphia(Phi) and the Southeastern Pennsylvania(PA)
MPH Empire BCBS of New York (NY)
MPI BCBS Prefix Anthem Blue Cross(BC) of California (CA)
MPJ Not Assigned prefix
MPK Not Assigned prefix
MPL BCBS of Illinois (IL)
MPM Blue shield(BS) of Northeastern New York (NeNY)
MPN Wellmark
MPO BCBS of Alabama (AL)
MPP Anthem BCBS of Wisconsin (WI)
MPQ BCBS of Minnesota (MN)
MPR Anthem Blue Cross(BC) of California (CA)
MPS Anthem BCBS of Georgia (GA)
MPT BCBS of Minnesota (MN)
MPU Anthem BCBS of Ohio (OH)
MPV Anthem BCBS of Georgia (GA)
MPW Not Assigned prefix
MPX BCBS of Minnesota (MN)
MPY Florida (FL) Blue
MPZ Not Assigned prefix
MQA BCBS Blue Care Network Michigan (MI)
MQB Not Assigned prefix
MQC Not Assigned prefix
MQD
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MQE Anthem BCBS of Georgia (GA)
MQF Not Assigned prefix
MQG Not Assigned prefix
MQH BCBS Blue Care Network Michigan (MI)
MQI Wellmark
MQJ BCBS Blue Care Network Michigan (MI)
MQK BCBS Blue Care Network Michigan (MI)
MQL BCBS Blue Care Network Michigan (MI)
MQM Not Assigned prefix
MQN Not Assigned prefix
MQO BCBS Blue Care Network Michigan (MI)
MQP Not Assigned prefix
MQQ Blue Cross (BC) of Idaho (ID)
MQR Highmark BCBS of Pennsylvania (PA)
MQS Not Assigned prefix
MQT Not Assigned prefix
MQU Anthem BCBS of Wisconsin (WI)
MQV BCBS of Nebraska (NE)
MQW BCBS Blue Care Network Michigan (MI)
MQX Anthem Blue Cross(BC) of California (CA)
MQY Bcbs Prefix Not Assigned prefix
MQZ Anthem Blue Cross(BC) of California (CA)
MRA Not Assigned prefix
MRB Not Assigned prefix
MRC BCBS of Illinois (IL)
MRD Not Assigned prefix
MRE Wellmark
MRF BCBS Blue Care Network Michigan (MI)
MRG BCBS of Illinois (IL)
MRH Anthem BCBS of Wisconsin (WI)
MRI Not Assigned prefix
MRJ
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MRK BCBS of Massachusetts (MA)
MRL Wellmark
MRM BCBS of Kansas City
MRN Anthem BCBS of Wisconsin (WI)
MRO Not Assigned prefix
MRP Anthem BCBS of Wisconsin (WI)
MRQ Not Assigned prefix
MRR Not Assigned prefix
MRS Wellmark
MRT BCBS of Texas (TX)
MRU Highmark BCBS of Pennsylvania (PA)
MRV Anthem Blue Cross(BC) of California (CA)
MRW BCBS of Illinois (IL)
MRX Anthem BCBS of Wisconsin (WI)
MRY BCBS of Alabama (AL)
MRZ BCBS of Illinois (IL)
MSA BCBS of Alabama (AL)
MSB Wellmark
MSC BCBS of Alabama (AL)
MSD
Independence Blue Cross(BC) of Philadelphia(Phi) and the Southeastern Pennsylvania(PA)
MSE BCBS Blue Care Network Michigan (MI)
MSF Empire BCBS of New York (NY)
MSG BCBS Blue Care Network Michigan (MI)
MSH BCBS Blue Care Network Michigan (MI)
MSI Regence BCBS
MSJ BCBS Prefix Premera BCBS of Alaska (AK)
MSK BCBS of Massachusetts (MA)
MSL Not Assigned prefix
MSM
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MSN Anthem BCBS of Ohio (OH)
MSO Not Assigned prefix
MSP Premera BCBS of Alaska (AK)
MSQ Premera BCBS of Alaska (AK)
MSR BCBS Blue Care Network Michigan (MI)
MSS Anthem BCBS of Virginia (VA)
MST Premera BCBS of Alaska (AK)
MSU Anthem BCBS of Ohio (OH)
MSV BCBS of Alabama (AL)
MSW BCBS of Illinois (IL)
MSX Not Assigned prefix
MSY BCBS of North Carolina (NC)
MSZ Anthem Blue Cross(BC) of California (CA)
MTA Anthem BCBS of Virginia (VA)
MTB Wellmark
MTC Anthem BCBS of Virginia (VA)
MTD Premera BCBS of Alaska (AK)
MTE Blue Shield (BS) of California
MTF Anthem BCBS of Georgia (GA)
MTG Not Assigned prefix
MTH Wellmark
MTI Not Assigned prefix
MTJ Not Assigned prefix
MTK Not Assigned prefix
MTL Not Assigned prefix
MTM Not Assigned prefix
MTN BCBS Prefix BCBS of Massachusetts (MA)
MTO Blue Shield (BS) of California
MTP BCBS of Massachusetts (MA)
MTQ Not Assigned prefix
MTR BCBS of Tennessee (TN)
MTS
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MTT Blue Shield (BS) of California
MTU Premera Blue Cross (BC) of Alaska (AK)
MTV Anthem BCBS of Indiana (IN)
MTW Anthem BCBS of Ohio (OH)
MTX
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MTY Anthem Blue Cross(BC) of California (CA)
MTZ BCBS of Illinois (IL)
MUA BCBS of Texas (TX)
MUB Anthem BCBS of Virginia (VA)
MUC Wellmark
MUD Wellmark
MUE Wellmark
MUF Anthem BCBS of Wisconsin (WI)
MUG Arkansas (AR) Blue Cross
MUH Bcbs Prefix Blue Cross (BC) of Idaho (ID)
MUI Not Assigned prefix
MUJ Anthem BCBS of Indiana (IN)
MUK Anthem BCBS of Wisconsin (WI)
MUL Not Assigned prefix
MUM BCBS of Arizona (AZ)
MUN BCBS of Illinois (IL)
MUO Anthem BCBS of Wisconsin (WI)
MUP BCBS of South Carolina (SC) / Southcarolinablues
MUQ Premera Blue Cross (BC) of Alaska (AK)
MUR BCBS Blue Care Network Michigan (MI)
MUS BCBS of Illinois (IL)
MUT BCBS of Minnesota (MN)
MUU Not Assigned prefix
MUV
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MUW Highmark BCBS of Pennsylvania (PA)
MUX Wellmark
MUY BCBS of Alabama (AL)
MUZ BCBS Blue Care Network Michigan (MI)
MVA BCBS of Montana (MT)
MVB BCBS of Vermont (VT)
MVC Not Assigned prefix
MVD Premera BCBS of Alaska (AK)
MVE BCBS of Massachusetts (MA)
MVF Empire BCBS of New York (NY)
MVG BCBS of Minnesota (MN)
MVH Not Assigned prefix
MVI Not Assigned prefix
MVJ Blue Shield (BS) of California
MVK Anthem BCBS of Georgia (GA)
MVL BCBS of Massachusetts (MA)
MVM BCBS of Alabama (AL)
MVN Empire BCBS of New York (NY)
MVO Not Assigned prefix
MVP
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MVQ Blue Cross (BC) of Idaho (ID)
MVR Highmark BCBS of Pennsylvania (PA)
MVS Not Assigned prefix
MVT BCBS of Minnesota (MN)
MVU Anthem BCBS of Indiana (IN)
MVV Wellmark
MVW Not Assigned prefix
MVX BCBS of South Carolina (SC) / Southcarolinablues
MVY Anthem BCBS of Ohio (OH)
MVZ Not Assigned prefix
MWA BCBS of Illinois (IL)
MWB Not Assigned prefix
MWC Not Assigned prefix
MWD
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MWE Anthem BCBS of Wisconsin (WI)
MWF BCBS of Illinois (IL)
MWG BCBS of Minnesota (MN)
MWH BCBS of Illinois (IL)
MWI Not Assigned prefix
MWJ Horizon BCBS of New Jersey (NJ)
MWK Horizon BCBS of New Jersey (NJ)
MWL BCBS of Illinois (IL)
MWM Anthem BCBS of Wisconsin (WI)
MWN BCBS of Illinois (IL)
MWO
Independence Blue Cross(BC) of Philadelphia(Phi) and the Southeastern Pennsylvania(PA)
MWP BCBS of Massachusetts (MA)
MWQ Not Assigned prefix
MWR BCBS of Kansas City
MWS Not Assigned prefix
MWT Not Assigned prefix
MWU Anthem BCBS of Wisconsin (WI)
MWV Anthem BCBS of Wisconsin (WI)
MWW Anthem BCBS of Nevada (NV)
MWX Bcbs Prefix BCBS of Alabama (AL)
MWY Not Assigned prefix
MWZ
Independence Blue Cross(BC) of Philadelphia(Phi) and the Southeastern Pennsylvania(PA)
MXA Anthem Blue Cross(BC) of California (CA)
MXB Not Assigned prefix
MXC Not Assigned prefix
MXD BCBS of Texas (TX)
MXE BCBS of Texas (TX)
MXF Empire BCBS of New York (NY)
MXG Not Assigned prefix
MXH BCBS Prefix
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MXI Blue Shield (BS) of California
MXJ Not Assigned prefix
MXK Capital Blue Cross of Pennsylvania (PA)
MXL Wellmark
MXM Wellmark
MXN BCBS of Massachusetts (MA)
MXO Wellmark
MXP BCBS of Massachusetts (MA)
MXQ Empire BCBS of New York (NY)
MXR Anthem Blue Cross(BC) of California (CA)
MXS Anthem BCBS of Georgia (GA)
MXT Not Assigned prefix
MXU Anthem BCBS of Connecticut (CT)
MXV Blue Cross (BC) of Idaho (ID)
MXW Blue Cross (BC) of Idaho (ID)
MXX Not Assigned prefix
MXY BCBS of Massachusetts (MA)
MXZ Premera BCBS of Alaska (AK)
MYA Not Assigned prefix
MYB Regence BCBS
MYC Not Assigned prefix
MYD BCBS of Massachusetts (MA)
MYE Anthem BCBS of Ohio (OH)
MYF Empire BCBS of New York (NY)
MYG Wellmark
MYH BCBS of Massachusetts (MA)
MYI BCBS of Massachusetts (MA)
MYJ Not Assigned prefix
MYK BCBS of Massachusetts (MA)
MYL BCBS of Massachusetts (MA)
MYM Anthem BCBS of Ohio (OH)
MYN Anthem BCBS of Ohio (OH)
MYO Not Assigned prefix
MYP Not Assigned prefix
MYQ BCBS of Massachusetts (MA)
MYR BCBS of Alabama (AL)
MYS BCBS of Massachusetts (MA)
MYT BCBS Blue Care Network Michigan (MI)
MYU BCBS of Massachusetts (MA)
MYV Not Assigned prefix
MYW
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MYX BCBS of Oklahoma (OK)
MYY BCBS Prefix
Carefirst BCBS of Maryland the (MD), District of Columbia (DC) and the Northern Virginia (VA)
MYZ BCBS of Massachusetts (MA)
MZA Wellmark
MZB Highmark BCBS of Pennsylvania (PA)
MZC BCBS of Rhode Island the (RI)
MZD BCBS of Illinois (IL)
MZE BCBS of Massachusetts (MA)
MZF Not Assigned prefix
MZG BCBS of Illinois (IL)
MZH Not Assigned prefix
MZI Blue Shield (BS) of California
MZJ Anthem BCBS of Wisconsin (WI)
MZK Anthem BCBS of Virginia (VA)
MZL BCBS of Alabama (AL)
MZM BCBS of Minnesota (MN)
MZN BCBS of North Carolina (NC)
MZO BCBS Blue Care Network Michigan (MI)
MZP BCBS Blue Care Network Michigan (MI)
MZQ BCBS of Minnesota (MN)
MZR BCBS of Minnesota (MN)
MZS Not Assigned prefix
MZT BCBS of Minnesota (MN)
MZU Florida (FL) Blue
MZV Not Assigned prefix
MZW BCBS of Minnesota (MN)
MZX Bcbs Prefix BCBS of Minnesota (MN)
MZY BCBS Blue Care Network Michigan (MI)
MZZ BCBS of Minnesota (MN)

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