| QAA | BCBS of Tennessee |
| QAB | Anthem BCBS of Colorado |
| QAC | No Prefix Assigned |
| QAD | Regence Blue Cross Blue Shield |
| QAE | Anthem BCBS of Georgia |
| QAF | No Prefix Assigned |
| QAG | Regence Blue Cross Blue Shield |
| QAH | Premera BCBS of Alaska |
| QAI | Anthem BCBS of Georgia |
| QAJ | Anthem BCBS of Virginia |
| QAK | BCBS of Alabama |
| QAL | Regence Blue Cross Blue Shield |
| QAM | BCBS of Minnesota |
| QAN | Blue Shield of California |
| QAO | Anthem BCBS of Ohio |
| QAP | Anthem Blue-Cross |
| QAQ | Anthem BCBS of Ohio |
| QAR | Anthem BCBS of Colorado |
| QAS | No Prefix Assigned |
| QAT | Anthem BCBS of Georgia |
| QAU | BCBS of Alabama |
| QAV | No Prefix Assigned |
| QAW | BCBS of Alabama |
| QAX | Anthem BCBS of Georgia |
| QAY | BCBS of Alabama |
| QAZ | BCBS of Tennessee |
| QBA | BCBS of Louisiana |
| QBB | BCBS of Louisiana |
| QBC | Anthem BCBS of Virginia |
| QBD | No Prefix Assigned |
| QBE | BCBS of Louisiana |
| QBF | No Prefix Assigned |
| QBG | BCBS of Louisiana |
| QBH | Anthem Blue-Cross |
| QBI | No Prefix Assigned |
| QBJ | No Prefix Assigned |
| QBK | No Prefix Assigned |
| QBL | BCBS of Minnesota |
| QBM | No Prefix Assigned |
| QBN | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QBO | No Prefix Assigned |
| QBP | Empire BCBS of New York |
| QBQ | No Prefix Assigned |
| QBR | Empire BCBS of New York |
| QBS | BCBS of Louisiana |
| QBT | No Prefix Assigned |
| QBU | No Prefix Assigned |
| QBV | No Prefix Assigned |
| QBW | No Prefix Assigned |
| QBX | No Prefix Assigned |
| QBY | No Prefix Assigned |
| QBZ | No Prefix Assigned |
| QCA | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCB | Wellmark Blue Cross Blue Shield |
| QCC | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCD | Empire BCBS of New York |
| QCE | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCF | Blue Shield of California |
| QCG | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCH | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCI | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCJ | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCK | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCL | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCM | No Prefix Assigned |
| QCN | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCO | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCP | Wellmark Blue Cross Blue Shield |
| QCQ | No Prefix Assigned |
| QCR | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCS | BCBS of Massachusetts |
| QCT | Anthem BCBS of Missouri |
| QCU | BCBS of Minnesota |
| QCV | BCBS of Minnesota |
| QCW | Empire BCBS of New York |
| QCX | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QCY | Anthem Blue-Cross |
| QCZ | BCBS of Nebraska |
| QDA | Highmark BCBS of Pennsylvania |
| QDB | Anthem BCBS of Virginia |
| QDC | Highmark BCBS of Pennsylvania |
| QDD | Highmark BCBS of Pennsylvania |
| QDE | Highmark BCBS of Pennsylvania |
| QDF | Highmark BCBS of Pennsylvania |
| QDG | Anthem BCBS of Virginia |
| QDH | Highmark BCBS of Pennsylvania |
| QDI | No Prefix Assigned |
| QDJ | Highmark BCBS of Pennsylvania |
| QDK | Anthem BCBS of Virginia |
| QDL | Anthem BCBS of Virginia |
| QDM | Highmark BCBS of Pennsylvania |
| QDN | Highmark BCBS of Pennsylvania |
| QDO | Highmark BCBS of Pennsylvania |
| QDP | Highmark BCBS of Pennsylvania |
| QDQ | Highmark BCBS of Pennsylvania |
| QDR | Highmark BCBS of Pennsylvania |
| QDS | Highmark BCBS of Pennsylvania |
| QDT | Anthem BCBS of Virginia |
| QDU | Highmark BCBS of Pennsylvania |
| QDV | Highmark BCBS of Pennsylvania |
| QDW | Highmark BCBS of Pennsylvania |
| QDX | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QDY | Highmark BCBS of Pennsylvania |
| QDZ | Highmark BCBS of Pennsylvania |
| QEA | No Prefix Assigned |
| QEB | No Prefix Assigned |
| QEC | No Prefix Assigned |
| QED | Anthem Blue-Cross |
| QEE | Blue Shield of California |
| QEF | No Prefix Assigned |
| QEG | Anthem Blue-Cross |
| QEH | BCBS of Alabama |
| QEI | No Prefix Assigned |
| QEJ | BCBS of Western New York |
| QEK | Anthem BCBS of Virginia |
| QEL | BCBS of Minnesota |
| QEM | No Prefix Assigned |
| QEN | Premera BCBS of Alaska |
| QEO | BCBS of Michigan |
| QEP | Anthem BCBS of Nevada |
| QEQ | Anthem BCBS of Georgia |
| QER | Anthem BCBS of Colorado |
| QES | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QET | No Prefix Assigned |
| QEU | No Prefix Assigned |
| QEV | No Prefix Assigned |
| QEW | Anthem BCBS of Nevada |
| QEX | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QEY | Anthem BCBS of Georgia |
| QEZ | No Prefix Assigned |
| QFA | No Prefix Assigned |
| QFB | No Prefix Assigned |
| QFC | BCBS of Nebraska |
| QFD | Wellmark Blue Cross Blue Shield |
| QFE | Geo Blue Blue Cross Blue Shield |
| QFF | Geo Blue Blue Cross Blue Shield |
| QFG | No Prefix Assigned |
| QFH | Geo Blue Blue Cross Blue Shield |
| QFI | No Prefix Assigned |
| QFJ | Geo Blue Blue Cross Blue Shield |
| QFK | BCBS of Western New York |
| QFL | No Prefix Assigned |
| QFM | Anthem BCBS of Georgia |
| QFN | No Prefix Assigned |
| QFO | No Prefix Assigned |
| QFP | Premera BCBS of Alaska |
| QFQ | No Prefix Assigned |
| QFR | No Prefix Assigned |
| QFS | Anthem BCBS of Colorado |
| QFT | No Prefix Assigned |
| QFU | Anthem Blue-Cross |
| QFV | Anthem BCBS of Colorado |
| QFW | BCBS of Western New York |
| QFX | Anthem Blue-Cross |
| QFY | Anthem BCBS of Ohio |
| QFZ | No Prefix Assigned |
| QGA | No Prefix Assigned |
| QGB | Anthem BCBS of Ohio |
| QGC | BCBS of Western New York |
| QGD | Anthem Blue-Cross |
| QGE | BCBS of Alabama |
| QGF | Anthem Blue-Cross |
| QGG | Anthem Blue-Cross |
| QGH | Anthem Blue-Cross |
| QGI | Anthem BCBS of Ohio |
| QGJ | Anthem Blue-Cross |
| QGK | Anthem BCBS of Georgia |
| QGL | Wellmark Blue Cross Blue Shield |
| QGM | Blue-Cross of Idaho |
| QGN | Anthem BCBS of Ohio |
| QGO | Anthem Blue-Cross |
| QGP | No Prefix Assigned |
| QGQ | Anthem BCBS of Ohio |
| QGR | Anthem BCBS of Virginia |
| QGS | Anthem BCBS of Virginia |
| QGT | Wellmark Blue Cross Blue Shield |
| QGU | Blue Shield of California |
| QGV | Anthem BCBS of Georgia |
| QGW | Anthem BCBS of Colorado |
| QGX | BCBS of Alabama |
| QGY | BCBS of Michigan |
| QGZ | BCBS of Michigan |
| QHA | Geo Blue Blue Cross Blue Shield |
| QHB | Geo Blue Blue Cross Blue Shield |
| QHC | Geo Blue Blue Cross Blue Shield |
| QHD | Geo Blue Blue Cross Blue Shield |
| QHE | Geo Blue Blue Cross Blue Shield |
| QHF | Geo Blue Blue Cross Blue Shield |
| QHG | Geo Blue Blue Cross Blue Shield |
| QHH | Geo Blue Blue Cross Blue Shield |
| QHI | Geo Blue Blue Cross Blue Shield |
| QHJ | Geo Blue Blue Cross Blue Shield |
| QHK | Geo Blue Blue Cross Blue Shield |
| QHL | Geo Blue Blue Cross Blue Shield |
| QHM | Geo Blue Blue Cross Blue Shield |
| QHN | Geo Blue Blue Cross Blue Shield |
| QHO | Geo Blue Blue Cross Blue Shield |
| QHP | Anthem BCBS of Georgia |
| QHQ | Anthem BCBS of Virginia |
| QHR | Premera BCBS of Alaska |
| QHS | Geo Blue Blue Cross Blue Shield |
| QHT | Anthem BCBS of Virginia |
| QHU | Premera BCBS of Alaska |
| QHV | Blue Shield of Northeastern New York |
| QHW | Anthem BCBS of Georgia |
| QHX | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QHY | No Prefix Assigned |
| QHZ | Anthem BCBS of Ohio |
| QIA | Anthem BCBS of Georgia |
| QIB | Blue Shield of California |
| QIC | Regence Blue Cross Blue Shield |
| QID | BCBS of Michigan |
| QIE | Anthem BCBS of Virginia |
| QIF | BCBS of Rhode Island |
| QIG | BCBS of Alabama |
| QIH | Anthem BCBS of Virginia |
| QII | BCBS of Michigan |
| QIJ | BCBS of Michigan |
| QIK | Wellmark Blue Cross Blue Shield |
| QIL | BCBS of Alabama |
| QIM | No Prefix Assigned |
| QIN | Anthem Blue-Cross |
| QIO | BCBS of Michigan |
| QIP | Anthem Blue-Cross |
| QIQ | BCBS of Michigan |
| QIR | BCBS of Michigan |
| QIS | BCBS of Minnesota |
| QIT | Anthem BCBS of Georgia |
| QIU | BCBS of Michigan |
| QIV | Regence Blue Cross Blue Shield |
| QIW | Highmark BCBS of Pennsylvania |
| QIX | No Prefix Assigned |
| QIY | BCBS of Michigan |
| QIZ | BCBS of Michigan |
| QJA | Anthem BCBS of Nevada |
| QJB | BCBS of Western New York |
| QJC | Regence Blue Cross Blue Shield |
| QJD | Anthem BCBS of Georgia |
| QJE | BCBS of Rhode Island |
| QJF | Anthem BCBS of Missouri |
| QJG | BCBS of Michigan |
| QJH | Anthem BCBS of Virginia |
| QJI | BCBS of Michigan |
| QJJ | BCBS of Michigan |
| QJK | BCBS of Western New York |
| QJL | BCBS of Michigan |
| QJM | Anthem BCBS of Ohio |
| QJN | BCBS of Michigan |
| QJO | Highmark BCBS of Pennsylvania |
| QJP | Highmark BCBS of Pennsylvania |
| QJQ | BCBS of Western New York |
| QJR | BCBS of Michigan |
| QJS | Highmark BCBS of Pennsylvania |
| QJT | Anthem BCBS of Georgia |
| QJU | BCBS of Michigan |
| QJV | Anthem BCBS of Georgia |
| QJW | BCBS of Western New York |
| QJX | BCBS of Michigan |
| QJY | BCBS of Michigan |
| QJZ | BCBS of Michigan |
| QKA | Anthem BCBS of Virginia |
| QKB | Anthem BCBS of Virginia |
| QKC | Empire BCBS of New York |
| QKD | Anthem BCBS of Georgia |
| QKE | Anthem BCBS of Georgia |
| QKF | BCBS of Michigan |
| QKG | BCBS of Michigan |
| QKH | Anthem BCBS of Virginia |
| QKI | BCBS of Michigan |
| QKJ | Anthem BCBS of Missouri |
| QKK | BCBS of Michigan |
| QKL | Anthem BCBS of Ohio |
| QKM | Anthem BCBS of Georgia |
| QKN | Anthem BCBS of Georgia |
| QKO | BCBS of Michigan |
| QKP | Anthem Blue-Cross |
| QKQ | BCBS of Michigan |
| QKR | BCBS of Michigan |
| QKS | Highmark BCBS of Pennsylvania |
| QKT | Blue Shield of Northeastern New York |
| QKU | Anthem BCBS of Missouri |
| QKV | Anthem Blue-Cross |
| QKW | BCBS of Minnesota |
| QKX | BCBS of Michigan |
| QKY | BCBS of Michigan |
| QKZ | BCBS of Michigan |
| QLA | Empire BCBS of New York |
| QLB | Anthem Blue-Cross |
| QLC | BCBS of Alabama |
| QLD | BCBS of Western New York |
| QLE | Anthem BCBS of Georgia |
| QLF | BCBS of Western New York |
| QLG | BCBS of Alabama |
| QLH | No Prefix Assigned |
| QLI | BCBS of South Carolina |
| QLJ | Anthem BCBS of Wisconsin |
| QLK | Anthem BCBS of Wisconsin |
| QLL | BCBS of Tennessee |
| QLM | No Prefix Assigned |
| QLN | BCBS of Alabama |
| QLO | Wellmark Blue Cross Blue Shield |
| QLP | Empire BCBS of New York |
| QLQ | Anthem BCBS of Missouri |
| QLR | Anthem BCBS of Missouri |
| QLS | Highmark BCBS of Pennsylvania |
| QLT | Anthem BCBS of Virginia |
| QLU | Wellmark Blue Cross Blue Shield |
| QLV | Regence Blue Cross Blue Shield |
| QLW | BCBS of Rhode Island |
| QLX | Anthem BCBS of Ohio |
| QLY | Regence Blue Cross Blue Shield |
| QLZ | BCBS of Michigan |
| QMA | BCBS of Illinois |
| QMB | BCBS of Illinois |
| QMC | BCBS of Illinois |
| QMD | BCBS of Illinois |
| QME | BCBS of Illinois |
| QMF | BCBS of Illinois |
| QMG | BCBS of Illinois |
| QMH | No Prefix Assigned |
| QMI | BCBS of Tennessee |
| QMJ | BCBS of Tennessee |
| QMK | No Prefix Assigned |
| QML | Premera BCBS of Alaska |
| QMM | No Prefix Assigned |
| QMN | BCBS of Western New York |
| QMO | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QMP | No Prefix Assigned |
| QMQ | Capital Blue-Cross of Pennsylvania |
| QMR | Anthem BCBS of Ohio |
| QMS | Blue Shield of California |
| QMT | No Prefix Assigned |
| QMU | Anthem BCBS of Colorado |
| QMV | Highmark BCBS of Pennsylvania |
| QMW | Anthem BCBS of Georgia |
| QMX | Anthem BCBS of Georgia |
| QMY | Regence Blue Cross Blue Shield |
| QMZ | Anthem BCBS of Georgia |
| QNA | Anthem BCBS of Kentucky |
| QNB | Anthem BCBS of Georgia |
| QNC | Anthem Blue-Cross |
| QND | No Prefix Assigned |
| QNE | BCBS of Massachusetts |
| QNF | BCBS of Alabama |
| QNG | Anthem BCBS of Georgia |
| QNH | Anthem BCBS of Georgia |
| QNI | BCBS of Michigan |
| QNJ | BCBS of Michigan |
| QNK | BCBS of Michigan |
| QNL | Highmark BCBS of Pennsylvania |
| QNM | No Prefix Assigned |
| QNN | Blue Shield of California |
| QNO | No Prefix Assigned |
| QNP | Anthem BCBS of Kentucky |
| QNQ | Anthem BCBS of Georgia |
| QNR | Empire BCBS of New York |
| QNS | No Prefix Assigned |
| QNT | Premera BCBS of Alaska |
| QNU | Anthem BCBS of Missouri |
| QNV | Anthem BCBS of Georgia |
| QNW | BCBS of Western New York |
| QNX | BCBS of Michigan |
| QNY | BCBS of Michigan |
| QNZ | BCBS of Western New York |
| QOA | Anthem BCBS of Indiana |
| QOB | Anthem Blue-Cross |
| QOC | Highmark BCBS of Pennsylvania |
| QOD | BCBS of Michigan |
| QOE | BCBS of Michigan |
| QOF | BCBS of Michigan |
| QOG | BCBS of Michigan |
| QOH | Anthem Blue-Cross |
| QOI | BCBS of North Carolina |
| QOJ | BCBS of Michigan |
| QOK | BCBS of Michigan |
| QOL | BCBS of Michigan |
| QOM | Regence Blue Cross Blue Shield |
| QON | BCBS of Michigan |
| QOO | BCBS of Michigan |
| QOP | Anthem BCBS of Ohio |
| QOQ | BCBS of Michigan |
| QOR | BCBS of Michigan |
| QOS | No Prefix Assigned |
| QOT | BCBS of Michigan |
| QOU | BCBS of Michigan |
| QOV | No Prefix Assigned |
| QOW | BCBS of Michigan |
| QOX | No Prefix Assigned |
| QOY | BCBS of Michigan |
| QOZ | BCBS of Michigan |
| QPA | No Prefix Assigned |
| QPB | No Prefix Assigned |
| QPC | No Prefix Assigned |
| QPD | No Prefix Assigned |
| QPE | No Prefix Assigned |
| QPF | No Prefix Assigned |
| QPG | No Prefix Assigned |
| QPH | No Prefix Assigned |
| QPI | No Prefix Assigned |
| QPJ | Regence Blue Cross Blue Shield |
| QPK | Anthem BCBS of Ohio |
| QPL | No Prefix Assigned |
| QPM | Anthem BCBS of Ohio |
| QPN | Regence Blue Cross Blue Shield |
| QPO | Blue-Cross of Idaho |
| QPP | Anthem BCBS of Georgia |
| QPQ | Blue Shield of California |
| QPR | Wellmark Blue Cross Blue Shield |
| QPS | Anthem BCBS of Missouri |
| QPT | BCBS of Western New York |
| QPU | No Prefix Assigned |
| QPV | Empire BCBS of New York |
| QPW | Anthem BCBS of Colorado |
| QPX | Anthem Blue-Cross |
| QPY | Anthem BCBS of Ohio |
| QPZ | Anthem BCBS of Georgia |
| QQA | Anthem BCBS of Georgia |
| QQB | Anthem BCBS of Nevada |
| QQC | Blue Shield of California |
| QQD | Regence Blue Cross Blue Shield |
| QQE | Regence Blue Cross Blue Shield |
| QQF | Regence Blue Cross Blue Shield |
| QQG | BCBS of Minnesota |
| QQH | No Prefix Assigned |
| QQI | BCBS of Minnesota |
| QQJ | Anthem BCBS of Virginia |
| QQK | BCBS of Minnesota |
| QQL | BCBS of Minnesota |
| QQM | Anthem BCBS of Georgia |
| QQN | BCBS of Minnesota |
| QQO | BCBS of Michigan |
| QQP | Anthem BCBS of Colorado |
| QQQ | BCBS of Minnesota |
| QQR | Regence Blue Cross Blue Shield |
| QQS | No Prefix Assigned |
| QQT | Regence Blue Cross Blue Shield |
| QQU | Anthem BCBS of Wisconsin |
| QQV | Anthem Blue-Cross |
| QQW | Anthem Blue-Cross |
| QQX | BCBS of Michigan |
| QQY | BCBS of Michigan |
| QQZ | BCBS of Western New York |
| QRA | No Prefix Assigned |
| QRB | No Prefix Assigned |
| QRC | No Prefix Assigned |
| QRD | No Prefix Assigned |
| QRE | No Prefix Assigned |
| QRF | No Prefix Assigned |
| QRG | Anthem Blue-Cross |
| QRH | Anthem Blue-Cross |
| QRI | Anthem BCBS of Missouri |
| QRJ | BCBS of Michigan |
| QRK | Anthem BCBS of Missouri |
| QRL | No Prefix Assigned |
| QRM | Anthem BCBS of Georgia |
| QRN | Anthem BCBS of Colorado |
| QRO | BCBS of Michigan |
| QRP | No Prefix Assigned |
| QRQ | Anthem BCBS of Georgia |
| QRR | Anthem BCBS of Colorado |
| QRS | Anthem BCBS of Colorado |
| QRT | Anthem BCBS of Colorado |
| QRU | Anthem BCBS of Colorado |
| QRV | Anthem BCBS of Colorado |
| QRW | Anthem BCBS of Colorado |
| QRX | Anthem BCBS of Colorado |
| QRY | Anthem BCBS of Colorado |
| QRZ | Blue Shield of Northeastern New York |
| QSA | No Prefix Assigned |
| QSB | No Prefix Assigned |
| QSC | No Prefix Assigned |
| QSD | No Prefix Assigned |
| QSE | No Prefix Assigned |
| QSF | No Prefix Assigned |
| QSG | Anthem BCBS of Georgia |
| QSH | Empire BCBS of New York |
| QSI | Anthem BCBS of Nevada |
| QSJ | Anthem BCBS of Georgia |
| QSK | No Prefix Assigned |
| QSL | Anthem BCBS of Kentucky |
| QSM | Anthem BCBS of Colorado |
| QSN | Anthem BCBS of Ohio |
| QSO | No Prefix Assigned |
| QSP | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QSQ | No Prefix Assigned |
| QSR | No Prefix Assigned |
| QSS | Anthem BCBS of Colorado |
| QST | No Prefix Assigned |
| QSU | Anthem BCBS of Georgia |
| QSV | BCBS of Massachusetts |
| QSW | Anthem BCBS of Georgia |
| QSX | Premera BCBS of Alaska |
| QSY | Premera BCBS of Alaska |
| QSZ | Anthem BCBS of Ohio |
| QTA | Anthem BCBS of Ohio |
| QTB | Anthem BCBS of Virginia |
| QTC | Anthem Blue-Cross |
| QTD | BCBS of Alabama |
| QTE | Anthem BCBS of Colorado |
| QTF | No Prefix Assigned |
| QTG | Regence Blue Cross Blue Shield |
| QTH | Premera BCBS of Alaska |
| QTI | No Prefix Assigned |
| QTJ | BCBS of Rhode Island |
| QTK | BCBS of Massachusetts |
| QTL | Anthem Blue-Cross |
| QTM | Regence Blue Cross Blue Shield |
| QTN | Regence Blue Cross Blue Shield |
| QTO | BCBS of Rhode Island |
| QTP | Anthem BCBS of Georgia |
| QTQ | Anthem Blue-Cross |
| QTR | Regence Blue Cross Blue Shield |
| QTS | Anthem BCBS of Kentucky |
| QTT | Anthem BCBS of Colorado |
| QTU | Anthem BCBS of Missouri |
| QTV | Premera BCBS of Alaska |
| QTW | No Prefix Assigned |
| QTX | Highmark BCBS of Delaware |
| QTY | Anthem BCBS of Georgia |
| QTZ | Anthem BCBS of Georgia |
| QUA | Anthem Blue-Cross |
| QUB | Anthem BCBS of Wisconsin |
| QUC | Anthem Blue-Cross |
| QUD | BCBS of Rhode Island |
| QUE | Wellmark Blue Cross Blue Shield |
| QUF | Anthem Blue-Cross |
| QUG | BCBS of Michigan |
| QUH | Anthem BCBS of Virginia |
| QUI | BCBS of Michigan |
| QUJ | BCBS of Michigan |
| QUK | Regence Blue Cross Blue Shield |
| QUL | Carefirst Blue Cross Blue Shield |
| QUM | Regence Blue Cross Blue Shield |
| QUN | BCBS of Rhode Island |
| QUO | Anthem BCBS of Ohio |
| QUP | Anthem BCBS of Georgia |
| QUQ | BCBS of Michigan |
| QUR | BCBS of Michigan |
| QUS | No Prefix Assigned |
| QUT | Blue Shield of California |
| QUU | BCBS of Michigan |
| QUV | BCBS of Michigan |
| QUW | Anthem BCBS of Colorado |
| QUX | BCBS of Michigan |
| QUY | BCBS of Michigan |
| QUZ | BCBS of Michigan |
| QVA | No Prefix Assigned |
| QVB | Anthem BCBS of Ohio |
| QVC | No Prefix Assigned |
| QVD | BCBS of Michigan |
| QVE | No Prefix Assigned |
| QVF | No Prefix Assigned |
| QVG | Anthem BCBS of Ohio |
| QVH | No Prefix Assigned |
| QVI | BCBS of Michigan |
| QVJ | BCBS of Michigan |
| QVK | BCBS of Michigan |
| QVL | BCBS of Alabama |
| QVM | Anthem BCBS of Colorado |
| QVN | No Prefix Assigned |
| QVO | BCBS of Michigan |
| QVP | Anthem BCBS of Ohio |
| QVQ | BCBS of Michigan |
| QVR | BCBS of Massachusetts |
| QVS | Anthem BCBS of Nevada |
| QVT | Anthem Blue-Cross |
| QVU | BCBS of Michigan |
| QVV | BCBS of Michigan |
| QVW | BCBS of Michigan |
| QVX | BCBS of Michigan |
| QVY | BCBS of Michigan |
| QVZ | BCBS of Michigan |
| QWA | Anthem Blue-Cross |
| QWB | Anthem Blue-Cross |
| QWC | Anthem Blue-Cross |
| QWD | Anthem Blue-Cross |
| QWE | Anthem Blue-Cross |
| QWF | Anthem Blue-Cross |
| QWG | Anthem Blue-Cross |
| QWH | Anthem Blue-Cross |
| QWI | BCBS of Minnesota |
| QWJ | BCBS of Western New York |
| QWK | BCBS of Michigan |
| QWL | Anthem BCBS of Ohio |
| QWM | Wellmark Blue Cross Blue Shield |
| QWN | Anthem Blue-Cross |
| QWO | BCBS of Michigan |
| QWP | Anthem BCBS of Colorado |
| QWQ | BCBS of Michigan |
| QWR | Anthem BCBS of Ohio |
| QWS | Anthem Blue-Cross |
| QWT | No Prefix Assigned |
| QWU | No Prefix Assigned |
| QWV | No Prefix Assigned |
| QWW | Anthem BCBS of Colorado |
| QWX | Anthem BCBS of Maine |
| QWY | BCBS of Wyoming |
| QWZ | No Prefix Assigned |
| QXA | Carefirst Blue Cross Blue Shield |
| QXB | Carefirst Blue Cross Blue Shield |
| QXC | Carefirst Blue Cross Blue Shield |
| QXD | Carefirst Blue Cross Blue Shield |
| QXE | Carefirst Blue Cross Blue Shield |
| QXF | Carefirst Blue Cross Blue Shield |
| QXG | Carefirst Blue Cross Blue Shield |
| QXH | Carefirst Blue Cross Blue Shield |
| QXI | Carefirst Blue Cross Blue Shield |
| QXJ | Independence Blue-Cross of Philadelphia/S. Pennsylvania |
| QXK | Carefirst Blue Cross Blue Shield |
| QXL | Carefirst Blue Cross Blue Shield |
| QXM | Carefirst Blue Cross Blue Shield |
| QXN | Carefirst Blue Cross Blue Shield |
| QXO | BCBS of Michigan |
| QXP | Carefirst Blue Cross Blue Shield |
| QXQ | BCBS of Western New York |
| QXR | Carefirst Blue Cross Blue Shield |
| QXS | Carefirst Blue Cross Blue Shield |
| QXT | Carefirst Blue Cross Blue Shield |
| QXU | Carefirst Blue Cross Blue Shield |
| QXV | No Prefix Assigned |
| QXW | No Prefix Assigned |
| QXX | BCBS of Massachusetts |
| QXY | BCBS of Michigan |
| QXZ | No Prefix Assigned |
| QYA | Highmark BCBS of Pennsylvania |
| QYB | Anthem BCBS of Virginia |
| QYC | Highmark BCBS of Pennsylvania |
| QYD | Highmark BCBS of Pennsylvania |
| QYE | Highmark BCBS of Pennsylvania |
| QYF | Highmark BCBS of Pennsylvania |
| QYG | Highmark BCBS of Pennsylvania |
| QYH | Anthem BCBS of Virginia |
| QYI | BCBS of Michigan |
| QYJ | BCBS of Michigan |
| QYK | BCBS of Michigan |
| QYL | Anthem BCBS of Georgia |
| QYM | BCBS of Western New York |
| QYN | BCBS of Michigan |
| QYO | BCBS of Michigan |
| QYP | Anthem BCBS of Ohio |
| QYQ | BCBS of Michigan |
| QYR | Anthem BCBS of Georgia |
| QYS | Anthem BCBS of Nevada |
| QYT | Regence Blue Cross Blue Shield |
| QYU | BCBS of Michigan |
| QYV | BCBS of Michigan |
| QYW | BCBS of Michigan |
| QYX | No Prefix Assigned |
| QYY | BCBS of Michigan |
| QYZ | BCBS of Western New York |
| QZA | Highmark BCBS of Pennsylvania |
| QZB | No Prefix Assigned |
| QZC | Highmark BCBS of Pennsylvania |
| QZD | Highmark BCBS of Pennsylvania |
| QZE | No Prefix Assigned |
| QZF | No Prefix Assigned |
| QZG | BCBS of Western New York |
| QZH | Anthem BCBS of Colorado |
| QZI | BCBS of Michigan |
| QZJ | BCBS of Western New York |
| QZK | BCBS of Western New York |
| QZL | Anthem BCBS of Georgia |
| QZM | Empire BCBS of New York |
| QZN | BCBS of Tennessee |
| QZO | No Prefix Assigned |
| QZP | Blue Shield of Northeastern New York |
| QZQ | BCBS of Western New York |
| QZR | BCBS of Michigan |
| QZS | Anthem BCBS of Nevada |
| QZT | Anthem Blue-Cross |
| QZU | No Prefix Assigned |
| QZV | BCBS of Michigan |
| QZW | BCBS of Tennessee |
| QZX | BCBS of Western New York |
| QZY | No Prefix Assigned |
| QZZ | BCBS of Michigan |
| Q3V | Independence Blue Cross |
| Q9V | Independence Blue Cross |
