| ZAA | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZAB | Highmark BCBS of Pennsylvania (PA) |
| ZAC | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZAD | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZAE | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZAF | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZAG | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZAH | Highmark BCBS of Pennsylvania (PA) |
| ZAI | Highmark BCBS of Pennsylvania (PA) |
| ZAJ | Highmark BCBS of Pennsylvania (PA) |
| ZAK | Highmark BCBS of Pennsylvania (PA) |
| ZAL | Highmark BCBS of Pennsylvania (PA) |
| ZAM | Highmark BCBS of Pennsylvania (PA) |
| ZAN | Highmark BCBS of Pennsylvania (PA) |
| ZAO | Highmark BCBS of Pennsylvania (PA) |
| ZAP | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZAQ | Highmark BCBS of Pennsylvania (PA) |
| ZAR | Highmark BCBS of Pennsylvania (PA) |
| ZAS | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZAT | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZAU | Highmark BCBS of Pennsylvania (PA) |
| ZAV | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZAW | Unassigned Prefix |
| ZAX | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZAY | Highmark BCBS of Pennsylvania (PA) |
| ZAZ | Highmark BCBS of Pennsylvania (PA) |
| ZBA | BCBS of Rhode Island (RI) |
| ZBB | BCBS of Massachusetts (MA) |
| ZBC | Anthem BCBS of Virginia (VA) |
| ZBD | BCBS of Rhode Island (RI) |
| ZBE | BCBS of Rhode Island (RI) |
| ZBF | BCBS of Rhode Island (RI) |
| ZBG | BCBS of Rhode Island (RI) |
| ZBH | BCBS of Rhode Island (RI) |
| ZBI | BCBS of Rhode Island (RI) |
| ZBJ | Unassigned Prefix |
| ZBK | Regence BCBS |
| ZBL | Blue Shield (BS) of California |
| ZBM | BCBS of Rhode Island (RI) |
| ZBN | BCBS of Rhode Island (RI) |
| ZBO | BCBS of Rhode Island (RI) |
| ZBP | BCBS of Rhode Island (RI) |
| ZBQ | Anthem BCBS of Ohio (OH) |
| ZBR | BCBS of Rhode Island (RI) |
| ZBS | BCBS of Rhode Island (RI) |
| ZBT | Regence BCBS |
| ZBU | BCBS of Illinois (IL) |
| ZBV | Anthem BCBS of Wisconsin (WI) |
| ZBW | Wellmark |
| ZBX | Anthem Blue Cross(BC) of California (CA) |
| ZBY | BCBS of Minnesota (MN) |
| ZBZ | Anthem BCBS of Wisconsin (WI) |
| ZCA | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCB | BCBS of Costa Rica (CR) |
| ZCC | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCD | Unassigned Prefix |
| ZCE | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCF | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCG | Unassigned Prefix |
| ZCH | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCI | Anthem BCBS of Kentucky (KY) |
| ZCJ | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCK | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCL | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCM | Unassigned Prefix |
| ZCN | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCO | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCP | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCQ | Unassigned Prefix |
| ZCR | Unassigned Prefix |
| ZCS | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCT | Unassigned Prefix |
| ZCU | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCV | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCW | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCX | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCY | BCBS of South Carolina (SC) / Southcarolinablues |
| ZCZ | BCBS of South Carolina (SC) / Southcarolinablues |
| ZDA | Blue Shield (BS) of California |
| ZDB | Blue Shield (BS) of California |
| ZDC | Unassigned Prefix |
| ZDD | Anthem BCBS of Kentucky (KY) |
| ZDE | Anthem BCBS of Nevada (NV) |
| ZDF | Unassigned Prefix |
| ZDG | Anthem BCBS of Nevada (NV) |
| ZDH | Anthem BCBS of Ohio (OH) |
| ZDI | Anthem Blue Cross(BC) of California (CA) |
| ZDJ | Anthem BCBS of Ohio (OH) |
| ZDK | Blue Shield (BS) of California |
| ZDL | BCBS of Illinois (IL) |
| ZDM | BCBS of Western New York (WNY) |
| ZDN | Unassigned Prefix |
| ZDO | Anthem Blue Cross(BC) of California (CA) |
| ZDP | Empire BCBS of New York (NY) |
| ZDQ | BCBS of Western New York (WNY) |
| ZDR | Unassigned Prefix |
| ZDS | Anthem BCBS of Virginia (VA) |
| ZDT | Wellmark |
| ZDU | Wellmark |
| ZDV | Regence BCBS |
| ZDW | Empire BCBS of New York (NY) |
| ZDX | Anthem BCBS of Connecticut (CT) |
| ZDY | Blue Shield (BS) of California |
| ZDZ | Unassigned Prefix |
| ZEA | BCBS of Tennessee (TN) |
| ZEB | BCBS of Tennessee (TN) |
| ZEC | BCBS of Tennessee (TN) |
| ZED | BCBS of Tennessee (TN) |
| ZEE | BCBS of Tennessee (TN) |
| ZEF | Wellmark |
| ZEG | BCBS of Illinois (IL) |
| ZEH | BCBS of Tennessee (TN) |
| ZEI | Anthem Blue Cross(BC) of California (CA) |
| ZEJ | BCBS of Tennessee (TN) |
| ZEK | BCBS of Tennessee (TN) |
| ZEL | Unassigned Prefix |
| ZEM | BCBS of Tennessee (TN) |
| ZEN | BCBS of Tennessee (TN) |
| ZEO | Anthem Blue Cross(BC) of California (CA) |
| ZEP | Unassigned Prefix |
| ZEQ | Anthem Blue Cross(BC) of California (CA) |
| ZER | BCBS of Tennessee (TN) |
| ZES | BCBS of Tennessee (TN) |
| ZET | BCBS of Tennessee (TN) |
| ZEU | BCBS of Tennessee (TN) |
| ZEV | BCBS of Tennessee (TN) |
| ZEW | BCBS of Tennessee (TN) |
| ZEX | BCBS of Tennessee (TN) |
| ZEY | Unassigned Prefix |
| ZEZ | Anthem BCBS of Wisconsin (WI) |
| ZFA | Anthem BCBS of Missouri (MO) |
| ZFB | Anthem BCBS of Missouri (MO) |
| ZFC | BCBS of Illinois (IL) |
| ZFD | BCBS of Alabama (AL) |
| ZFE | Anthem BCBS of Georgia (GA) |
| ZFF | Premera Blue Cross (BC) of Alaska (AK) |
| ZFG | BCBS of Minnesota (MN) |
| ZFH | Anthem BCBS of Wisconsin (WI) |
| ZFI | BCBS Blue Care Network Michigan (MI) |
| ZFJ | Unassigned Prefix |
| ZFK | Unassigned Prefix |
| ZFL | Blue Shield (BS) of California |
| ZFM | BCBS of Western New York (WNY) |
| ZFN | BCBS of Illinois (IL) |
| ZFO | Anthem Blue Cross(BC) of California (CA) |
| ZFP | Anthem BCBS of Missouri (MO) |
| ZFQ | Anthem Blue Cross(BC) of California (CA) |
| ZFR | BCBS of Illinois (IL) |
| ZFS | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZFT | Anthem BCBS of Virginia (VA) |
| ZFU | BCBS of Illinois (IL) |
| ZFV | BCBS of Illinois (IL) |
| ZFW | BCBS of Illinois (IL) |
| ZFX | Anthem BCBS of Missouri (MO) |
| ZFY | Anthem BCBS of Connecticut (CT) |
| ZFZ | Anthem BCBS of Ohio (OH) |
| ZGA | BCBS of Texas (TX) |
| ZGB | BCBS of Texas (TX) |
| ZGC | BCBS of Texas (TX) |
| ZGD | BCBS of Texas (TX) |
| ZGE | BCBS of Texas (TX) |
| ZGF | Unassigned Prefix |
| ZGG | Unassigned Prefix |
| ZGH | BCBS of Texas (TX) |
| ZGI | BCBS of Texas (TX) |
| ZGJ | BCBS of Texas (TX) |
| ZGK | Unassigned Prefix |
| ZGL | BCBS of Texas (TX) |
| ZGM | BCBS of Texas (TX) |
| ZGN | BCBS of Texas (TX) |
| ZGO | BCBS of Texas (TX) |
| ZGP | BCBS of Texas (TX) |
| ZGQ | BCBS of Texas (TX) |
| ZGR | BCBS of Texas (TX) |
| ZGS | BCBS of Texas (TX) |
| ZGT | BCBS of Texas (TX) |
| ZGU | BCBS of Texas (TX) |
| ZGV | BCBS of Texas (TX) |
| ZGW | BCBS of Texas (TX) |
| ZGX | BCBS of Texas (TX) |
| ZGY | BCBS of Texas (TX) |
| ZGZ | BCBS of Texas (TX) |
| ZHA | Blue Shield (BS) of California |
| ZHB | Regence BCBS |
| ZHC | Blue Shield (BS) of California |
| ZHD | Regence BCBS |
| ZHE | Empire BCBS of New York (NY) |
| ZHF | Wellmark |
| ZHG | Regence BCBS |
| ZHH | Regence BCBS |
| ZHI | Unassigned Prefix |
| ZHJ | Anthem BCBS of Georgia (GA) |
| ZHK | BCBS of Alabama (AL) |
| ZHL | Regence BCBS |
| ZHM | Regence BCBS |
| ZHN | Wellmark |
| ZHO | Regence BCBS |
| ZHP | BCBS of South Carolina (SC) / Southcarolinablues |
| ZHQ | BCBS of Minnesota (MN) |
| ZHR | Unassigned Prefix |
| ZHS | Empire BCBS of New York (NY) |
| ZHT | Blue Shield (BS) of California |
| ZHU | Regence BCBS |
| ZHV | Regence BCBS |
| ZHW | Anthem BCBS of Georgia (GA) |
| ZHX | Anthem BCBS of Ohio (OH) |
| ZHY | Regence BCBS |
| ZHZ | Anthem BCBS of Georgia (GA) |
| ZIA | BCBS of Vermont (VT) |
| ZIB | BCBS of Vermont (VT) |
| ZIC | Anthem BCBS of Indiana (IN) |
| ZID | BCBS of Vermont (VT) |
| ZIE | BCBS of Vermont (VT) |
| ZIF | Unassigned Prefix |
| ZIG | BCBS of Vermont (VT) |
| ZIH | BCBS of Vermont (VT) |
| ZII | BCBS of Vermont (VT) |
| ZIJ | BCBS of Vermont (VT) |
| ZIK | BCBS of Vermont (VT) |
| ZIL | BCBS of Vermont (VT) |
| ZIM | Anthem BCBS of Virginia (VA) |
| ZIN | Wellmark |
| ZIO | BCBS Blue Care Network Michigan (MI) |
| ZIP | Anthem Blue Cross(BC) of California (CA) |
| ZIQ | Horizon BCBS of New Jersey (NJ) |
| ZIR | Anthem Blue Cross(BC) of California (CA) |
| ZIS | Wellmark |
| ZIT | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| ZIU | BCBS of Vermont (VT) |
| ZIV | Anthem BCBS of Ohio (OH) |
| ZIW | Highmark BCBS of Pennsylvania (PA) |
| ZIX | Anthem Blue Cross(BC) of California (CA) |
| ZIY | Horizon BCBS of New Jersey (NJ) |
| ZIZ | BCBS Blue Care Network Michigan (MI) |
| ZJA | Anthem BCBS of Ohio (OH) |
| ZJB | BCBS of Minnesota (MN) |
| ZJC | Unassigned Prefix |
| ZJD | Anthem Blue Cross(BC) of California (CA) |
| ZJE | Unassigned Prefix |
| ZJF | Anthem BCBS of Indiana (IN) |
| ZJG | BCBS of Alabama (AL) |
| ZJH | Anthem BCBS of Connecticut (CT) |
| ZJI | Anthem BCBS of Wisconsin (WI) |
| ZJJ | Unassigned Prefix |
| ZJK | Anthem BCBS of Georgia (GA) |
| ZJL | Horizon BCBS of New Jersey (NJ) |
| ZJM | Anthem Blue Cross(BC) of California (CA) |
| ZJN | Anthem BCBS of Ohio (OH) |
| ZJO | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| ZJP | Anthem Blue Cross(BC) of California (CA) |
| ZJQ | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| ZJR | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| ZJS | Anthem BCBS of Missouri (MO) |
| ZJT | Anthem BCBS of Connecticut (CT) |
| ZJU | Anthem Blue Cross(BC) of California (CA) |
| ZJV | Anthem BCBS of Missouri (MO) |
| ZJW | Regence BCBS |
| ZJX | BCBS of Western New York (WNY) |
| ZJY | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| ZJZ | Unassigned Prefix |
| ZKA | Premera BCBS of Alaska (AK) |
| ZKB | Premera BCBS of Alaska (AK) |
| ZKC | Premera BCBS of Alaska (AK) |
| ZKD | Premera BCBS of Alaska (AK) |
| ZKE | Premera BCBS of Alaska (AK) |
| ZKF | Premera BCBS of Alaska (AK) |
| ZKG | Premera BCBS of Alaska (AK) |
| ZKH | Premera BCBS of Alaska (AK) |
| ZKI | Premera Blue Cross (BC) of Alaska (AK) |
| ZKJ | Premera BCBS of Alaska (AK) |
| ZKK | Premera BCBS of Alaska (AK) |
| ZKL | Premera BCBS of Alaska (AK) |
| ZKM | Premera BCBS of Alaska (AK) |
| ZKN | Premera BCBS of Alaska (AK) |
| ZKO | Horizon BCBS of New Jersey (NJ) |
| ZKP | Premera BCBS of Alaska (AK) |
| ZKQ | Premera BCBS of Alaska (AK) |
| ZKR | Premera BCBS of Alaska (AK) |
| ZKS | Premera BCBS of Alaska (AK) |
| ZKT | Premera BCBS of Alaska (AK) |
| ZKU | Premera BCBS of Alaska (AK) |
| ZKV | Premera BCBS of Alaska (AK) |
| ZKW | Anthem BCBS of Missouri (MO) |
| ZKX | Premera BCBS of Alaska (AK) |
| ZKY | Premera BCBS of Alaska (AK) |
| ZKZ | Premera BCBS of Alaska (AK) |
| ZLA | Regence BCBS |
| ZLB | Regence BCBS |
| ZLC | Regence BCBS |
| ZLD | Regence BCBS |
| ZLE | Regence BCBS |
| ZLF | Regence BCBS |
| ZLG | Regence BCBS |
| ZLH | Regence BCBS |
| ZLI | Anthem BCBS of Ohio (OH) |
| ZLJ | Regence BCBS |
| ZLK | Unassigned Prefix |
| ZLL | Unassigned Prefix |
| ZLM | Regence BCBS |
| ZLN | Regence BCBS |
| ZLO | Regence BCBS |
| ZLP | Regence BCBS |
| ZLQ | Unassigned Prefix |
| ZLR | Regence BCBS |
| ZLS | Unassigned Prefix |
| ZLT | Blue Cross (BC) of Idaho (ID) |
| ZLU | Regence BCBS |
| ZLV | Regence BCBS |
| ZLW | Regence BCBS |
| ZLX | Anthem BCBS of Nevada (NV) |
| ZLY | Regence BCBS |
| ZLZ | Blue Shield (BS) of California |
| ZMA | Anthem BCBS of Virginia (VA) |
| ZMB | BCBS of Minnesota (MN) |
| ZMC | Highmark BCBS of Pennsylvania (PA) |
| ZMD | Anthem Blue Cross(BC) of California (CA) |
| ZME | Unassigned Prefix |
| ZMF | Anthem Blue Cross(BC) of California (CA) |
| ZMG | Empire BCBS of New York (NY) |
| ZMH | Highmark BCBS of Pennsylvania (PA) |
| ZMI | BCBS of Massachusetts (MA) |
| ZMJ | Anthem BCBS of Wisconsin (WI) |
| ZMK | Wellmark |
| ZML | BCBS of Kansas |
| ZMM | Anthem BCBS of Nevada (NV) |
| ZMN | Unassigned Prefix |
| ZMO | Blue Cross (BC) of Idaho (ID) |
| ZMP | Anthem BCBS of Wisconsin (WI) |
| ZMQ | Unassigned Prefix |
| ZMR | Empire BCBS of New York (NY) |
| ZMS | Unassigned Prefix |
| ZMT | Blue Cross (BC) of Idaho (ID) |
| ZMU | Wellmark |
| ZMV | BCBS of Minnesota (MN) |
| ZMW | Anthem BCBS of Ohio (OH) |
| ZMX | Anthem BCBS of Missouri (MO) |
| ZMY | Wellmark |
| ZMZ | Anthem Blue Cross(BC) of California (CA) |
| ZNA | Premera BCBS of Alaska (AK) |
| ZNB | Premera BCBS of Alaska (AK) |
| ZNC | Premera BCBS of Alaska (AK) |
| ZND | Wellmark |
| ZNE | BCBS of Alabama (AL) |
| ZNF | Anthem Blue Cross(BC) of California (CA) |
| ZNG | Wellmark |
| ZNH | Blue Cross (BC) of Idaho (ID) |
| ZNI | Anthem BCBS of Georgia (GA) |
| ZNJ | Premera BCBS of Alaska (AK) |
| ZNK | Premera BCBS of Alaska (AK) |
| ZNL | Anthem BCBS of Missouri (MO) |
| ZNM | Anthem BCBS of Ohio (OH) |
| ZNN | Premera BCBS of Alaska (AK) |
| ZNO | BCBS of South Carolina (SC) / Southcarolinablues |
| ZNP | Premera BCBS of Alaska (AK) |
| ZNQ | Premera BCBS of Alaska (AK) |
| ZNR | BCBS of Tennessee (TN) |
| ZNS | Unassigned Prefix |
| ZNT | BCBS of Minnesota (MN) |
| ZNU | Unassigned Prefix |
| ZNV | Anthem BCBS of Missouri (MO) |
| ZNW | Premera BCBS of Alaska (AK) |
| ZNX | Unassigned Prefix |
| ZNY | Premera BCBS of Alaska (AK) |
| ZNZ | Premera BCBS of Alaska (AK) |
| ZOA | BCBS of Western New York (WNY) |
| ZOB | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZOC | Blue Shield (BS) of California |
| ZOD | Highmark Blue Shield (BS) of Pennsylvanaia (PA) |
| ZOE | Anthem BCBS of Wisconsin (WI) |
| ZOF | BCBS Blue Care Network Michigan (MI) |
| ZOG | Highmark Blue Shield (BS) of Pennsylvanaia (PA) |
| ZOH | BCBS of South Carolina (SC) / Southcarolinablues |
| ZOI | Highmark Blue Shield (BS) of Pennsylvanaia (PA) |
| ZOJ | Highmark Blue Shield (BS) of Pennsylvanaia (PA) |
| ZOK | Highmark Blue Shield (BS) of Pennsylvanaia (PA) |
| ZOL | Highmark Blue Shield (BS) of Pennsylvanaia (PA) |
| ZOM | BCBS of South Carolina (SC) / Southcarolinablues |
| ZON | Highmark BCBS of Pennsylvania (PA) |
| ZOO | BCBS Blue Care Network Michigan (MI) |
| ZOP | Blue Shield (BS) of California |
| ZOQ | Highmark BCBS of Pennsylvania (PA) |
| ZOR | Highmark BCBS of Pennsylvania (PA) |
| ZOS | Blue Shield (BS) of California |
| ZOT | Anthem Blue Cross(BC) of California (CA) |
| ZOU | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| ZOV | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| ZOW | Anthem BCBS of Virginia (VA) |
| ZOX | Anthem BCBS of Virginia (VA) |
| ZOY | Anthem BCBS of Virginia (VA) |
| ZOZ | Anthem BCBS of Virginia (VA) |
| ZPA | Highmark BCBS of West Virginia (WV) |
| ZPB | Highmark BCBS of Pennsylvania (PA) |
| ZPC | Unassigned Prefix |
| ZPD | Highmark BCBS of West Virginia (WV) |
| ZPE | Highmark BCBS of West Virginia (WV) |
| ZPF | Unassigned Prefix |
| ZPG | Highmark BCBS of West Virginia (WV) |
| ZPH | Unassigned Prefix |
| ZPI | Blue Shield (BS) of California |
| ZPJ | Anthem BCBS of Ohio (OH) |
| ZPK | BCBS of Illinois (IL) |
| ZPL | Wellmark |
| ZPM | Highmark BCBS of Pennsylvania (PA) |
| ZPN | Highmark BCBS of West Virginia (WV) |
| ZPO | Highmark BCBS of West Virginia (WV) |
| ZPP | Highmark BCBS of West Virginia (WV) |
| ZPQ | Anthem BCBS of Ohio (OH) |
| ZPR | Wellmark |
| ZPS | Independence Blue Cross(BC) of Philadelphia(Phi) and Southeastern Pennsylvania(PA) |
| ZPT | Highmark BCBS of West Virginia (WV) |
| ZPU | Anthem Blue Cross(BC) of California (CA) |
| ZPV | Anthem BCBS of Ohio (OH) |
| ZPW | Highmark BCBS of West Virginia (WV) |
| ZPX | Unassigned Prefix |
| ZPY | Anthem BCBS of Virginia (VA) |
| ZPZ | Regence BCBS |
| ZQA | Anthem BCBS of Ohio (OH) |
| ZQB | Wellmark |
| ZQC | Unassigned Prefix |
| ZQD | BCBS of Western New York (WNY) |
| ZQE | Anthem BCBS of Ohio (OH) |
| ZQF | Anthem BCBS of Ohio (OH) |
| ZQG | Blue shield(BS) of Northeastern New York (NeNY) |
| ZQH | Anthem BCBS of Colorado (CO) |
| ZQI | BCBS Blue Care Network Michigan (MI) |
| ZQJ | BCBS of Tennessee (TN) |
| ZQK | BCBS of Western New York (WNY) |
| ZQL | BCBS of Tennessee (TN) |
| ZQM | Highmark BCBS of Pennsylvania (PA) |
| ZQN | Highmark BCBS of Pennsylvania (PA) |
| ZQO | Anthem BCBS of Ohio (OH) |
| ZQP | Anthem BCBS of Ohio (OH) |
| ZQQ | Anthem BCBS of Colorado (CO) |
| ZQR | Anthem BCBS of Ohio (OH) |
| ZQS | BCBS of Minnesota (MN) |
| ZQT | Unassigned Prefix |
| ZQU | Anthem Blue Cross(BC) of California (CA) |
| ZQV | Anthem BCBS of Georgia (GA) |
| ZQW | BCBS of Western New York (WNY) |
| ZQX | BCBS of Western New York (WNY) |
| ZQY | Blue shield(BS) of Northeastern New York (NeNY) |
| ZQZ | Anthem BCBS of Colorado (CO) |
| ZRA | Anthem BCBS of Wisconsin (WI) |
| ZRB | Anthem BCBS of Wisconsin (WI) |
| ZRC | Anthem BCBS of Wisconsin (WI) |
| ZRD | Anthem BCBS of Nevada (NV) |
| ZRE | BCBS of Minnesota (MN) |
| ZRF | Anthem BCBS of Wisconsin (WI) |
| ZRG | Anthem BCBS of Wisconsin (WI) |
| ZRH | Anthem BCBS of Georgia (GA) |
| ZRI | Anthem BCBS of Nevada (NV) |
| ZRJ | Anthem BCBS of Georgia (GA) |
| ZRK | Premera BCBS of Alaska (AK) |
| ZRL | Premera BCBS of Alaska (AK) |
| ZRM | Wellmark |
| ZRN | Anthem BCBS of Georgia (GA) |
| ZRO | Anthem BCBS of Ohio (OH) |
| ZRP | BCBS of Massachusetts (MA) |
| ZRQ | Carefirst BCBS of Maryland (MD)/ District of Columbia (DC) and Northern Virginia (VA) |
| ZRR | BCBS Blue Care Network Michigan (MI) |
| ZRS | BCBS of Minnesota (MN) |
| ZRT | Blue Shield (BS) of California |
| ZRU | Anthem BCBS of Wisconsin (WI) |
| ZRV | Anthem BCBS of Georgia (GA) |
| ZRW | BCBS of Wyoming (WY) |
| ZRX | Anthem BCBS of Georgia (GA) |
| ZRY | Anthem BCBS of Georgia (GA) |
| ZRZ | Anthem BCBS of Georgia (GA) |
| ZSA | BCBS of Wyoming (WY) |
| ZSB | Unassigned Prefix |
| ZSC | BCBS of Wyoming (WY) |
| ZSD | BCBS of Wyoming (WY) |
| ZSE | Unassigned Prefix |
| ZSF | BCBS of Wyoming (WY) |
| ZSG | BCBS of Minnesota (MN) |
| ZSH | Unassigned Prefix |
| ZSI | Anthem Blue Cross(BC) of California (CA) |
| ZSJ | Unassigned Prefix |
| ZSK | BCBS of Wyoming (WY) |
| ZSL | BCBS of Minnesota (MN) |
| ZSM | BCBS of Wyoming (WY) |
| ZSN | Highmark BCBS of Pennsylvania (PA) |
| ZSO | Highmark BCBS of Pennsylvania (PA) |
| ZSP | BCBS of Wyoming (WY) |
| ZSQ | Unassigned Prefix |
| ZSR | Highmark BCBS of Pennsylvania (PA) |
| ZSS | Wellmark |
| ZST | Anthem Blue Cross(BC) of California (CA) |
| ZSU | Anthem BCBS of Georgia (GA) |
| ZSV | Wellmark |
| ZSW | BCBS of Minnesota (MN) |
| ZSX | Wellmark |
| ZSY | BCBS of Illinois (IL) |
| ZSZ | Highmark BCBS of Pennsylvania (PA) |
| ZTA | Anthem BCBS of Kentucky (KY) |
| ZTB | Anthem BCBS of Virginia (VA) |
| ZTC | Unassigned Prefix |
| ZTD | BCBS of Alabama (AL) |
| ZTE | Unassigned Prefix |
| ZTF | Anthem Blue Cross(BC) of California (CA) |
| ZTG | Anthem BCBS of New Hampshire (NH) |
| ZTH | Anthem BCBS of Virginia (VA) |
| ZTI | Blue Shield (BS) of California |
| ZTJ | Anthem Blue Cross(BC) of California (CA) |
| ZTK | Anthem BCBS of Missouri (MO) |
| ZTL | Anthem BCBS of Connecticut (CT) |
| ZTM | Regence BCBS |
| ZTN | BCBS of Texas (TX) |
| ZTO | Empire BCBS of New York (NY) |
| ZTP | Blue Shield (BS) of California |
| ZTQ | Anthem Blue Cross(BC) of California (CA) |
| ZTR | Unassigned Prefix |
| ZTS | Highmark BCBS of Pennsylvania (PA) |
| ZTT | Anthem BCBS of Colorado (CO) |
| ZTU | Anthem BCBS of Connecticut (CT) |
| ZTV | Anthem BCBS of Georgia (GA) |
| ZTW | Unassigned Prefix |
| ZTX | Unassigned Prefix |
| ZTY | Anthem BCBS of Georgia (GA) |
| ZTZ | BCBS of Minnesota (MN) |
| ZUA | Triple-S SALUD BCBS of Puerto Rico (PR) |
| ZUB | Wellmark |
| ZUC | Anthem Blue Cross(BC) of California (CA) |
| ZUD | Anthem BCBS of Nevada (NV) |
| ZUE | Unassigned Prefix |
| ZUF | Anthem BCBS of Georgia (GA) |
| ZUG | Anthem Blue Cross(BC) of California (CA) |
| ZUH | Triple-S SALUD BCBS of Puerto Rico (PR) |
| ZUI | Anthem BCBS of Ohio (OH) |
| ZUJ | Anthem Blue Cross(BC) of California (CA) |
| ZUK | Triple-S SALUD BCBS of Puerto Rico (PR) |
| ZUL | Anthem BCBS of Missouri (MO) |
| ZUM | Triple-S SALUD BCBS of Puerto Rico (PR) |
| ZUN | Unassigned Prefix |
| ZUO | Anthem BCBS of Missouri (MO) |
| ZUP | Blue Shield (BS) of California |
| ZUQ | Anthem Blue Cross(BC) of California (CA) |
| ZUR | Triple-S SALUD BCBS of Puerto Rico (PR) |
| ZUS | Triple-S SALUD BCBS of Puerto Rico (PR) |
| ZUT | Unassigned Prefix |
| ZUU | BCBS of Illinois (IL) |
| ZUV | Triple-S SALUD BCBS of Puerto Rico (PR) |
| ZUW | BCBS of Illinois (IL) |
| ZUX | Triple-S SALUD BCBS of Puerto Rico (PR) |
| ZUY | Unassigned Prefix |
| ZUZ | Regence BCBS |
| ZVA | Unassigned Prefix |
| ZVB | BCBS of Louisiana(LA) |
| ZVC | Anthem BCBS of Indiana (IN) |
| ZVD | Anthem BCBS of Nevada (NV) |
| ZVE | BCBS of Texas (TX) |
| ZVF | Empire BCBS of New York (NY) |
| ZVG | Regence BCBS |
| ZVH | Regence BCBS |
| ZVI | Anthem BCBS of Ohio (OH) |
| ZVJ | Regence BCBS |
| ZVK | Regence BCBS |
| ZVL | Anthem BCBS of Georgia (GA) |
| ZVM | Wellmark |
| ZVN | BCBS of Minnesota (MN) |
| ZVO | Anthem BCBS of Ohio (OH) |
| ZVP | Anthem BCBS of Maine (ME) |
| ZVQ | Anthem Blue Cross(BC) of California (CA) |
| ZVR | Anthem BCBS of Ohio (OH) |
| ZVS | Highmark BCBS of Pennsylvania (PA) |
| ZVT | BCBS of Illinois (IL) |
| ZVU | Regence BCBS |
| ZVV | Anthem Blue Cross(BC) of California (CA) |
| ZVW | Regence BCBS |
| ZVX | Regence BCBS |
| ZVY | Regence BCBS |
| ZVZ | Anthem BCBS of Kentucky (KY) |
| ZWA | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWB | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWC | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWD | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWE | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWF | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWG | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWH | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWI | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWJ | BCBS of Massachusetts (MA) |
| ZWK | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWL | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWM | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWN | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWO | Unassigned Prefix |
| ZWP | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWQ | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWR | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWS | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWT | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWU | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWV | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWW | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWX | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWY | Blue shield(BS) of Northeastern New York (NeNY) |
| ZWZ | Blue shield(BS) of Northeastern New York (NeNY) |
| ZXA | BCBS of Tennessee (TN) |
| ZXB | BCBS of Tennessee (TN) |
| ZXC | Anthem BCBS of Ohio (OH) |
| ZXD | BCBS of Tennessee (TN) |
| ZXE | BCBS of Tennessee (TN) |
| ZXF | Unassigned Prefix |
| ZXG | BCBS of Tennessee (TN) |
| ZXH | BCBS of Tennessee (TN) |
| ZXI | Anthem BCBS of Ohio (OH) |
| ZXJ | Premera BCBS of Alaska (AK) |
| ZXK | BCBS of Tennessee (TN) |
| ZXL | Premera BCBS of Alaska (AK) |
| ZXM | Unassigned Prefix |
| ZXN | Premera BCBS of Alaska (AK) |
| ZXO | Anthem BCBS of Ohio (OH) |
| ZXP | BCBS of Tennessee (TN) |
| ZXQ | BCBS of Western New York (WNY) |
| ZXR | BCBS of Tennessee (TN) |
| ZXS | BCBS of Tennessee (TN) |
| ZXT | BCBS of Western New York (WNY) |
| ZXU | Premera BCBS of Alaska (AK) |
| ZXV | BCBS of Tennessee (TN) |
| ZXW | Anthem BCBS of New Hampshire (NH) |
| ZXX | BCBS of Tennessee (TN) |
| ZXY | BCBS of Tennessee (TN) |
| ZXZ | Premera BCBS of Alaska (AK) |
| ZYA | Wellmark |
| ZYB | Empire BCBS of New York (NY) |
| ZYC | Unassigned Prefix |
| ZYD | Empire BCBS of New York (NY) |
| ZYE | Empire BCBS of New York (NY) |
| ZYF | Anthem Blue Cross(BC) of California (CA) |
| ZYG | Wellmark |
| ZYH | Wellmark |
| ZYI | Anthem Blue Cross(BC) of California (CA) |
| ZYJ | Empire BCBS of New York (NY) |
| ZYK | Empire BCBS of New York (NY) |
| ZYL | Empire BCBS of New York (NY) |
| ZYM | Wellmark |
| ZYN | Wellmark |
| ZYO | Anthem Blue Cross(BC) of California (CA) |
| ZYP | Anthem BCBS of Missouri (MO) |
| ZYQ | Anthem BCBS of Ohio (OH) |
| ZYR | Wellmark |
| ZYS | Wellmark |
| ZYT | BCBS of Minnesota (MN) |
| ZYU | BCBS of Illinois (IL) |
| ZYV | Wellmark |
| ZYW | BCBS of Wyoming (WY) |
| ZYX | Wellmark |
| ZYY | Anthem BCBS of Missouri (MO) |
| ZYZ | Wellmark |
| ZZA | BCBS of Minnesota (MN) |
| ZZB | Wellmark |
| ZZC | Anthem BCBS of Indiana (IN) |
| ZZD | Anthem Blue Cross(BC) of California (CA) |
| ZZE | Anthem Blue Cross(BC) of California (CA) |
| ZZF | Anthem Blue Cross(BC) of California (CA) |
| ZZG | Anthem BCBS of New Hampshire (NH) |
| ZZH | Anthem BCBS of Indiana (IN) |
| ZZI | Blue Shield (BS) of California |
| ZZJ | BCBS of Tennessee (TN) |
| ZZK | Anthem BCBS of Ohio (OH) |
| ZZL | BCBS of Minnesota (MN) |
| ZZM | Premera BCBS of Alaska (AK) |
| ZZN | Premera BCBS of Alaska (AK) |
| ZZO | Anthem Blue Cross(BC) of California (CA) |
| ZZP | Premera BCBS of Alaska (AK) |
| ZZQ | Premera BCBS of Alaska (AK) |
| ZZR | Premera BCBS of Alaska (AK) |
| ZZS | Highmark BCBS of Pennsylvania (PA) |
| ZZT | BCBS of Texas (TX) |
| ZZU | BCBS of Minnesota (MN) |
| ZZV | Premera BCBS of Alaska (AK) |
| ZZW | Premera BCBS of Alaska (AK) |
| ZZX | Unassigned Prefix |
| ZZY | Premera BCBS of Alaska (AK) |
| ZZZ | Anthem Blue Cross(BC) of California (CA) |
