BCBS Prefix Lookup L
List of BCBS Prefixes LAA to LZZ
This list of bcbs prefixes includes both alpha prefixes and alpha numeric prefixes. We continue to add additional prefixes as we find them along with the blue cross blue shield provider phone number. Remember that each table has a search box at the top so it’s not necessary to page through the list of bc prefixes to find the one you need. Just enter the bc prefix in the search box to find it quickly. We appreciate your patience and support as we update our bcbs prefix lists.
| Prefix | Plan Name |
|---|---|
| L2S | Premera Blue Cross |
| L3M | Premera Blue Cross |
| L4D | Premera Blue Cross |
| L4N | Premera Blue Cross |
| L5N | Premera Blue Cross |
| L5T | Premera Blue Cross |
| LAA | BCBS of Illinois |
| LAB | BCBS of Michigan |
| LAC | Anthem |
| LAD | Unassigned Prefix |
| LAE | BCBS of Georgia |
| LAF | Anthem BCBS of Virginia |
| LAG | BCBS of South Carolina |
| LAH | Anthem Blue Cross of California |
| LAJ | BCBS of New Mexico |
| LAK | BCBS of Illinois |
| LAL | Unassigned Prefix |
| LAM | Unassigned Prefix |
| LAN | Anthem |
| LAO | Unassigned Prefix |
| LAP | Blue Shield of California |
| LAQ | BCBS of Illinois |
| LAR | BCBS of Illinois |
| LAS | BCBS of Texas |
| LAT | Unassigned Prefix |
| LAU | Unassigned Prefix |
| LAV | Anthem Blue Cross of California |
| LAW | Premera Blue Cross |
| LAX | BCBS of Michigan |
| LAY | Unassigned Prefix |
| LAZ | Blue Shield of California |
| LBA | Capital Blue Cross |
| LBB | Anthem Central Region (OH, IN, KY) |
| LBC | Capital Blue Cross |
| LBD | Anthem Central Region (OH, IN, KY) |
| LBE | BCBS of Tennessee |
| LBF | BCBS of Tennessee |
| LBG | Premera Blue Cross |
| LBH | Carefirst BCBS of Maryland |
| LBI | Anthem Central Region (OH, IN, KY) |
| LBJ | BCBS of Minnesota |
| LBK | Blue Shield of California |
| LBL | BCBS of Massachusetts |
| LBM | Highmark BCBS |
| LBN | Anthem |
| LBO | Premera Blue Cross |
| LBP | BCBS of Oklahoma |
| LBQ | Unassigned Prefix |
| LBR | Premera Blue Cross |
| LBS | BCBS of Massachusetts |
| LBT | Premera Blue Cross |
| LBU | Anthem BCBS of Virginia |
| LBV | BCBS of South Carolina |
| LBW | Unassigned Prefix |
| LBX | Unassigned Prefix |
| LBY | Carefirst BCBS of Maryland |
| LBZ | Anthem |
| LCA | Wellmark BCBS |
| LCB | BCBS of Illinois |
| LCC | BCBS of Georgia |
| LCD | Anthem |
| LCE | BCBS of South Carolina |
| LCF | Unassigned Prefix |
| LCG | Anthem Blue Cross of California |
| LCH | BCBS of Illinois |
| LCI | Regence Blue Shield of Washington |
| LCJ | BCBS of Florida |
| LCK | BCBS of Florida |
| LCL | Anthem |
| LCM | BCBS of Minnesota |
| LCN | BCBS of Tennessee |
| LCO | BCBS of Alabama |
| LCP | BCBS of Nebraska |
| LCQ | Unassigned Prefix |
| LCR | Anthem Blue Cross of California |
| LCS | Highmark BCBS |
| LCT | Unassigned Prefix |
| LCU | Wellmark BCBS |
| LCV | BCBS of Florida |
| LCW | Wellmark BCBS |
| LCX | BCBS of Kansas City |
| LCY | BCBS of Florida |
| LCZ | Anthem Central Region (OH, IN, KY) |
| LDA | Regence BCBS of Utah |
| LDB | Anthem Blue Cross of California |
| LDC | Unassigned Prefix |
| LDD | Highmark BCBS |
| LDE | BCBS of Texas |
| LDF | Unassigned Prefix |
| LDH | Wellmark BCBS |
| LDI | BCBS of Minnesota |
| LDJ | Unassigned Prefix |
| LDK | Unassigned Prefix |
| LDL | Anthem Central Region (OH, IN, KY) |
| LDM | BCBS of Michigan |
| LDN | Unassigned Prefix |
| LDO | BCBS of Georgia |
| LDP | Unassigned Prefix |
| LDQ | Anthem Central Region (OH, IN, KY) |
| LDR | Anthem |
| LDS | Unassigned Prefix |
| LDT | Unassigned Prefix |
| LDU | Anthem Blue Cross of California |
| LDV | Unassigned Prefix |
| LDW | Unassigned Prefix |
| LDX | Unassigned Prefix |
| LDY | Anthem Blue Cross of California |
| LDZ | Anthem Central Region (OH, IN, KY) |
| LEA | Anthem Central Region (OH, IN, KY) |
| LEB | Anthem Blue Cross of California |
| LED | BCBS of Illinois |
| LEE | Premera Blue Cross |
| LEF | Anthem Blue Cross of California |
| LEG | BCBS of Illinois |
| LEH | Anthem Blue Cross of California |
| LEJ | Blue Shield of Northeastern New York |
| LEK | BCBS of Minnesota |
| LEL | BCBS of Illinois |
| LEM | Unassigned Prefix |
| LEO | BCBS of Michigan |
| LEP | Unassigned Prefix |
| LEQ | Unassigned Prefix |
| LER | BCBS of Massachusetts |
| LES | Horizon BCBS of New Jersey |
| LET | BCBS of Western New York |
| LEU | Unassigned Prefix |
| LEV | BCBS of Louisiana |
| LEW | Anthem Blue Cross of California |
| LEX | Anthem Blue Cross of California |
| LEY | Unassigned Prefix |
| LEZ | Unassigned Prefix |
| LFA | BCBS of Georgia |
| LFB | BCBS of Illinois |
| LFC | BCBS of Minnesota |
| LFE | BCBS of Minnesota |
| LFF | Wellmark BCBS |
| LFG | Anthem |
| LFH | BCBS of Florida |
| LFI | BCBS of Michigan |
| LFJ | Anthem Blue Cross of California |
| LFK | BCBS of Texas |
| LFL | Wellmark BCBS |
| LFM | BCBS of Illinois |
| LFN | Blue Cross of Idaho |
| LFO | Unassigned Prefix |
| LFP | BCBS of South Carolina |
| LFR | BCBS of North Carolina |
| LFS | Independence Blue Cross |
| LFT | BCBS of Minnesota |
| LFU | Anthem Central Region (OH, IN, KY) |
| LFV | Unassigned Prefix |
| LFW | Anthem |
| LFX | BCBS of Kansas City |
| LFY | Anthem Blue Cross of California |
| LFZ | Unassigned Prefix |
| LGA | Anthem |
| LGB | BCBS of Alabama |
| LGC | Anthem Central Region (OH, IN, KY) |
| LGD | Unassigned Prefix |
| LGE | Anthem Central Region (OH, IN, KY) |
| LGF | Blue Shield of California |
| LGG | Unassigned Prefix |
| LGH | Anthem Central Region (OH, IN, KY) |
| LGJ | Anthem |
| LGK | Unassigned Prefix |
| LGL | Highmark BCBS |
| LGM | BCBS of Arkansas |
| LGN | Unassigned Prefix |
| LGO | Anthem Blue Cross of California |
| LGP | BCBS of Illinois |
| LGQ | Anthem BCBS of Colorado |
| LGR | Unassigned Prefix |
| LGS | BCBS of Alabama |
| LGT | BCBS of Illinois |
| LGV | Unassigned Prefix |
| LGX | Unassigned Prefix |
| LGY | Unassigned Prefix |
| LGZ | Unassigned Prefix |
| LHA | BCBS of South Carolina |
| LHB | BCBS of Georgia |
| LHC | Unassigned Prefix |
| LHD | Wellmark BCBS |
| LHE | Unassigned Prefix |
| LHF | BCBS of Georgia |
| LHG | Horizon BCBS of New Jersey |
| LHH | Unassigned Prefix |
| LHI | Unassigned Prefix |
| LHJ | Highmark BCBS |
| LHK | Premera Blue Cross |
| LHL | BCBS of Massachusetts |
| LHM | Unassigned Prefix |
| LHN | Unassigned Prefix |
| LHO | Carefirst BCBS of Maryland |
| LHP | BCBS of Rhose Island |
| LHQ | Carefirst Administrators |
| LHR | Anthem Central Region (OH, IN, KY) |
| LHS | Carefirst BCBS of Maryland |
| LHT | Anthem |
| LHU | Regence Blue Cross Blue Shield of Oregon |
| LHV | Unassigned Prefix |
| LHW | Anthem Central Region (OH, IN, KY) |
| LHX | BCBS of Texas |
| LHY | Anthem BCBS of Virginia |
| LHZ | Anthem |
| LIA | Unassigned Prefix |
| LIB | Anthem BCBS of Virginia |
| LIC | Anthem BCBS of Virginia |
| LID | BCBS of South Carolina |
| LIF | Wellmark BCBS |
| LIG | Blue Cross of Idaho |
| LIH | Unassigned Prefix |
| LIJ | Unassigned Prefix |
| LIK | Unassigned Prefix |
| LIL | Wellmark BCBS |
| LIN | Unassigned Prefix |
| LIO | Unassigned Prefix |
| LIP | Unassigned Prefix |
| LIQ | BCBS of South Carolina |
| LIR | Anthem Central Region (OH, IN, KY) |
| LIS | Carefirst Administrators |
| LIT | Premera Blue Cross |
| LIU | BCBS of Rhose Island |
| LIV | Carefirst BCBS of Maryland |
| LIW | Regence BCBS of Washington |
| LIX | BCBS of South Carolina |
| LIY | Premera Blue Cross |
| LIZ | Carefirst BCBS of Maryland |
| LJA | BCBS of Georgia |
| LJB | Anthem |
| LJC | BCBS of Illinois |
| LJD | BCBS of Western New York |
| LJE | BCBS of Illinois |
| LJF | Unassigned Prefix |
| LJG | Excellus BCBS of New York |
| LJH | Wellmark BCBS |
| LJJ | BCBS of South Carolina |
| LJK | BCBS of Massachusetts |
| LJL | BCBS of Minnesota |
| LJM | Highmark BCBS |
| LJN | Horizon BCBS of New Jersey |
| LJP | Unassigned Prefix |
| LJQ | Anthem |
| LJR | Anthem Central Region (OH, IN, KY) |
| LJS | Unassigned Prefix |
| LJT | Anthem Blue Cross of California |
| LJU | BCBS of Minnesota |
| LJW | Horizon BCBS of New Jersey |
| LJX | BCBS of Illinois |
| LJY | Carefirst Administrators |
| LJZ | Anthem BCBS of Virginia |
| LKA | BCBS of Massachusetts |
| LKB | Unassigned Prefix |
| LKC | BCBS of Western New York |
| LKD | Unassigned Prefix |
| LKE | Unassigned Prefix |
| LKF | Horizon BCBS of New Jersey |
| LKG | Premera Blue Cross |
| LKH | Unassigned Prefix |
| LKI | Unassigned Prefix |
| LKJ | BCBS of Minnesota |
| LKK | Unassigned Prefix |
| LKL | Carefirst BCBS of Maryland |
| LKN | Unassigned Prefix |
| LKP | BCBS of Florida |
| LKQ | BCBS of Illinois |
| LKR | BCBS of Massachusetts |
| LKS | Unassigned Prefix |
| LKT | Unassigned Prefix |
| LKU | Wellmark BCBS |
| LKV | Unassigned Prefix |
| LKX | Empire BCBS of New York |
| LKY | Anthem BCBS of Virginia |
| LKZ | Unassigned Prefix |
| LLA | Carefirst BCBS of Maryland |
| LLB | BCBS of Illinois |
| LLC | BCBS of Louisiana |
| LLD | Unassigned Prefix |
| LLE | Unassigned Prefix |
| LLF | Wellmark BCBS |
| LLG | BCBS of Illinois |
| LLH | Independence Blue Cross |
| LLI | Carefirst BCBS of Maryland |
| LLJ | Premera Blue Cross |
| LLK | Wellmark BCBS |
| LLL | BCBS of Texas |
| LLM | Highmark BCBS |
| LLN | Anthem Central Region (OH, IN, KY) |
| LLO | Anthem Blue Cross of California |
| LLP | Unassigned Prefix |
| LLQ | Unassigned Prefix |
| LLR | Highmark BCBS |
| LLS | BCBS of Illinois |
| LLT | Anthem Blue Cross of California |
| LLU | Blue Shield of California |
| LLV | Unassigned Prefix |
| LLW | BCBS of South Carolina |
| LLX | Anthem Central Region (OH, IN, KY) |
| LLY | Anthem Central Region (OH, IN, KY) |
| LLZ | Anthem BCBS of Virginia |
| LMA | Carefirst BCBS of Maryland |
| LMB | Anthem |
| LMD | Empire BCBS of New York |
| LME | Anthem Blue Cross of California |
| LMF | BCBS of Nebraska |
| LMG | Regence Blue Cross Blue Shield of Oregon |
| LMH | BCBS of Massachusetts |
| LMI | Regence Blue Cross Blue Shield of Utah |
| LMJ | Unassigned Prefix |
| LMK | Anthem Central Region (OH, IN, KY) |
| LML | Highmark BCBS |
| LMM | BCBS of Vermont |
| LMN | Unassigned Prefix |
| LMO | Blue Shield of California |
| LMP | Carefirst Administrators |
| LMQ | Anthem |
| LMR | Anthem Blue Cross of California |
| LMS | Independence Blue Cross |
| LMT | Regence Blue Cross Blue Shield of Oregon |
| LMU | Regence Blue Cross Blue Shield of Utah |
| LMV | Anthem Central Region (OH, IN, KY) |
| LMW | Unassigned Prefix |
| LMX | Unassigned Prefix |
| LMY | Anthem Central Region (OH, IN, KY) |
| LMZ | Anthem Central Region (OH, IN, KY) |
| LNA | Wellmark BCBS |
| LNB | BCBS of Illinois |
| LNC | Anthem Central Region (OH, IN, KY) |
| LND | Anthem |
| LNE | Wellmark BCBS |
| LNF | BCBS of Georgia |
| LNG | BCBS of Michigan |
| LNH | BCBS of South Carolina |
| LNI | Unassigned Prefix |
| LNJ | Anthem |
| LNK | BCBS of Arkansas Blue Advantage |
| LNL | Anthem Blue Cross of California |
| LNM | BCBS of Minnesota |
| LNN | Anthem BCBS of Virginia |
| LNP | Unassigned Prefix |
| LNQ | BCBS of Texas |
| LNR | Anthem Central Region (OH, IN, KY) |
| LNS | BCBS of Alabama |
| LNT | BCBS of Arizona |
| LNU | Anthem Central Region (OH, IN, KY) |
| LNV | Anthem Blue Cross of California |
| LNW | Highmark BCBS |
| LNX | BCBS of Texas |
| LNY | Unassigned Prefix |
| LNZ | Unassigned Prefix |
| LOC | Blue Shield of California |
| LOD | Blue Shield of California |
| LOE | Anthem Blue Cross of California |
| LOK | Highmark BCBS |
| LOL | BCBS of Minnesota |
| LOM | Highmark BCBS |
| LON | Anthem Central Region (OH, IN, KY) |
| LOP | Blue Shield of California |
| LOQ | BCBS of Georgia |
| LOR | BCBS of Illinois |
| LOS | Unassigned Prefix |
| LOT | Anthem Blue Cross of California |
| LOU | Unassigned Prefix |
| LOV | Blue Shield of California |
| LOX | Blue Shield of California |
| LOY | Carefirst BCBS of Maryland |
| LOZ | Unassigned Prefix |
| LPA | Carefirst Administrators |
| LPB | BCBS of Kansas City |
| LPC | Blue Shield of California |
| LPD | Carefirst BCBS of Maryland |
| LPF | Unassigned Prefix |
| LPG | Carefirst BCBS of Maryland |
| LPH | Carefirst BCBS of Maryland |
| LPI | BCBS of Texas |
| LPJ | Carefirst BCBS of Maryland |
| LPK | Unassigned Prefix |
| LPL | Anthem Blue Cross of California |
| LPM | Unassigned Prefix |
| LPN | Unassigned Prefix |
| LPO | Blue Cross of Northeast Pennsylvania |
| LPP | Anthem |
| LPQ | BCBS of Michigan |
| LPR | Anthem |
| LPS | Premera Blue Cross |
| LPT | Regence Blue Cross Blue Shield of Oregon |
| LPU | Anthem Blue Cross of California |
| LPV | Unassigned Prefix |
| LPW | BCBS of Georgia |
| LPX | BCBS of Tennessee |
| LPY | Unassigned Prefix |
| LPZ | Anthem Blue Cross of California |
| LQA | BCBS of Alabama |
| LQB | BCBS of Western New York |
| LQC | Unassigned Prefix |
| LQE | Unassigned Prefix |
| LQF | Unassigned Prefix |
| LQG | Unassigned Prefix |
| LQH | Wellmark BCBS |
| LQJ | Wellmark BCBS |
| LQK | Wellmark BCBS |
| LQL | Premera Blue Cross |
| LQM | BCBS of Rhose Island |
| LQN | Unassigned Prefix |
| LQP | Unassigned Prefix |
| LQQ | Unassigned Prefix |
| LQR | BCBS of Illinois |
| LQS | BCBS of Massachusetts |
| LQT | Unassigned Prefix |
| LQU | Unassigned Prefix |
| LQV | Blue Shield of California |
| LQW | BCBS of South Carolina |
| LQY | Anthem |
| LQZ | Anthem Blue Cross of California |
| LRA | BCBS of Tennessee |
| LRB | Unassigned Prefix |
| LRC | Independence Blue Cross |
| LRD | BCBS of Tennessee |
| LRE | BCBS of Tennessee |
| LRF | Anthem Central Region (OH, IN, KY) |
| LRH | Wellmark BCBS |
| LRI | Unassigned Prefix |
| LRJ | Carefirst BCBS of Maryland |
| LRK | Carefirst BCBS of Maryland |
| LRL | Highmark BCBS |
| LRM | Blue Shield of California |
| LRN | Unassigned Prefix |
| LRP | BCBS of Michigan |
| LRQ | BCBS of Michigan |
| LRR | Premera Blue Cross |
| LRS | BCBS of Michigan |
| LRT | Unassigned Prefix |
| LRU | Anthem Blue Cross of California |
| LRV | Unassigned Prefix |
| LRX | Unassigned Prefix |
| LRY | Unassigned Prefix |
| LRZ | Anthem |
| LSA | Anthem Blue Cross of California |
| LSB | Unassigned Prefix |
| LSC | BCBS of South Carolina |
| LSD | BCBS of Illinois |
| LSE | Anthem Blue Cross of California |
| LSF | BCBS of South Carolina |
| LSG | Unassigned Prefix |
| LSH | Horizon BCBS of New Jersey |
| LSI | Unassigned Prefix |
| LSJ | BCBS of Illinois |
| LSK | Blue Shield of California |
| LSL | Regence Blue Cross Blue Shield of Oregon |
| LSM | BCBS of South Carolina |
| LSN | Unassigned Prefix |
| LSP | BCBS of South Carolina |
| LSQ | BCBS of South Carolina |
| LSR | BCBS of Kansas |
| LSS | Unassigned Prefix |
| LSU | Blue Shield of California |
| LSV | Anthem |
| LSW | Horizon BCBS of New Jersey |
| LSX | BCBS of Texas |
| LSY | Unassigned Prefix |
| LSZ | Anthem |
| LTA | BCBS of Tennessee |
| LTB | Anthem Blue Cross of California |
| LTC | Anthem Blue Cross of California |
| LTD | Wellmark BCBS |
| LTE | Wellmark BCBS |
| LTF | Regence Blue Cross Blue Shield of Oregon |
| LTG | Anthem Central Region (OH, IN, KY) |
| LTH | Unassigned Prefix |
| LTI | BCBS of Massachusetts |
| LTJ | Highmark BCBS |
| LTK | BCBS of Minnesota |
| LTL | Anthem |
| LTM | Unassigned Prefix |
| LTN | Anthem Blue Cross of California |
| LTO | BCBS of Nebraska |
| LTP | BCBS of Minnesota |
| LTQ | BCBS of South Carolina |
| LTR | Unassigned Prefix |
| LTS | Unassigned Prefix |
| LTT | Blue Shield of California |
| LTU | Anthem Central Region (OH, IN, KY) |
| LTV | Highmark BCBS |
| LTW | Unassigned Prefix |
| LTX | Anthem Central Region (OH, IN, KY) |
| LTY | BCBS of Illinois |
| LTZ | BCBS of Minnesota |
| LUA | Anthem |
| LUB | Capital Blue Cross |
| LUC | BCBS of Florida |
| LUD | Capital Blue Cross |
| LUE | Unassigned Prefix |
| LUF | Independence Blue Cross |
| LUI | BCBS of Minnesota |
| LUJ | Anthem Central Region (OH, IN, KY) |
| LUK | Anthem Central Region (OH, IN, KY) |
| LUL | BCBS of Minnesota |
| LUM | Anthem Central Region (OH, IN, KY) |
| LUN | Unassigned Prefix |
| LUO | Unassigned Prefix |
| LUP | Capital Blue Cross |
| LUQ | Unassigned Prefix |
| LUR | Premera Blue Cross |
| LUS | Anthem Blue Cross of California |
| LUT | Capital Blue Cross |
| LUU | BCBS of Tennessee |
| LUV | Unassigned Prefix |
| LUW | Unassigned Prefix |
| LUX | Anthem Central Region (OH, IN, KY) |
| LUY | BCBS of New Mexico |
| LUZ | Anthem Central Region (OH, IN, KY) |
| LVA | Anthem Central Region (OH, IN, KY) |
| LVC | Anthem |
| LVD | Empire BCBS of New York |
| LVE | BCBS of North Carolina |
| LVF | Anthem BCBS of Virginia |
| LVG | Unassigned Prefix |
| LVH | Highmark BCBS |
| LVI | BCBS of Western New York |
| LVJ | Carefirst BCBS of Maryland |
| LVK | Carefirst BCBS of Maryland |
| LVL | Unassigned Prefix |
| LVM | BCBS of Michigan |
| LVN | Premera Blue Cross |
| LVP | Empire BCBS of New York |
| LVQ | Carefirst BCBS of Maryland |
| LVR | Regence BCBS of Utah |
| LVS | BCBS of Arkansas Blue Advantage |
| LVU | Anthem Central Region (OH, IN, KY) |
| LVV | Carefirst BCBS of Maryland |
| LVW | BCBS of Florida |
| LVX | Anthem Blue Cross of California |
| LVY | Unassigned Prefix |
| LWA | BCBS of South Carolina |
| LWB | Wellmark BCBS |
| LWC | BCBS of Western New York |
| LWD | BCBS of South Carolina |
| LWE | BCBS of Alabama |
| LWF | Unassigned Prefix |
| LWG | BCBS of Michigan |
| LWH | Unassigned Prefix |
| LWI | BCBS of Tennessee |
| LWJ | BCBS of Illinois |
| LWK | Empire BCBS of New York |
| LWL | Anthem |
| LWM | BCBS of Minnesota |
| LWN | Unassigned Prefix |
| LWO | Anthem |
| LWP | Empire BCBS of New York |
| LWQ | BCBS of Michigan |
| LWR | Horizon BCBS of New Jersey |
| LWU | Unassigned Prefix |
| LWV | Unassigned Prefix |
| LWW | Excellus BCBS of New York |
| LWY | BCBS of Tennessee |
| LWZ | BCBS of Alabama |
| LXA | BCBS of Minnesota |
| LXB | Highmark BCBS |
| LXC | BCBS of Western New York |
| LXD | Highmark BCBS |
| LXE | Anthem Central Region (OH, IN, KY) |
| LXF | BCBS of Louisiana |
| LXG | BCBS of Minnesota |
| LXH | BCBS of Illinois |
| LXI | Anthem |
| LXJ | Anthem |
| LXK | BCBS of Western New York |
| LXL | Anthem Central Region (OH, IN, KY) |
| LXN | BCBS of Arkansas |
| LXP | BCBS of Michigan |
| LXQ | BCBS of Western New York |
| LXR | BCBS of Illinois |
| LXS | BCBS of Louisiana |
| LXT | BCBS of Western New York |
| LXU | Wellmark BCBS |
| LXV | Unassigned Prefix |
| LXW | Anthem Central Region (OH, IN, KY) |
| LXX | BCBS of Minnesota |
| LXY | Unassigned Prefix |
| LXZ | Premera Blue Cross |
| LYA | Carefirst BCBS of Maryland |
| LYB | Blue Cross of Northeast Pennsylvania |
| LYC | Anthem Blue Cross of California |
| LYD | Premera Blue Cross |
| LYE | Unassigned Prefix |
| LYF | BCBS of Michigan |
| LYG | Anthem BCBS of Virginia |
| LYH | Unassigned Prefix |
| LYJ | Anthem Central Region (OH, IN, KY) |
| LYK | Highmark BCBS |
| LYL | BCBS of Texas |
| LYM | Unassigned Prefix |
| LYN | Premera Blue Cross |
| LYO | Unassigned Prefix |
| LYP | BCBS of Louisiana |
| LYQ | Unassigned Prefix |
| LYR | BCBS of Massachusetts |
| LYS | Unassigned Prefix |
| LYT | Anthem BCBS of Virginia |
| LYU | Unassigned Prefix |
| LYV | Anthem BCBS of Virginia |
| LYW | Independence Blue Cross |
| LYX | BCBS of Kansas City |
| LYY | Unassigned Prefix |
| LYZ | Wellmark BCBS |
| LZA | Unassigned Prefix |
| LZC | BCBS of Michigan |
| LZD | Wellmark BCBS |
| LZE | BCBS of Illinois |
| LZF | BCBS of Illinois |
| LZG | BCBS of Michigan |
| LZH | Wellmark BCBS |
| LZJ | Anthem Central Region (OH, IN, KY) |
| LZK | Anthem Central Region (OH, IN, KY) |
| LZL | BCBS of Massachusetts |
| LZM | Unassigned Prefix |
| LZN | Anthem Central Region (OH, IN, KY) |
| LZP | BCBS of Michigan |
| LZQ | BCBS of Western New York |
| LZR | BCBS of Nebraska |
| LZS | Wellmark BCBS |
| LZT | BCBS of Michigan |
| LZU | Horizon BCBS of New Jersey |
| LZV | Unassigned Prefix |
| LZW | BCBS of Illinois |
| LZX | Unassigned Prefix |
| LZY | Premera Blue Cross |
| LZZ | BCBS of Massachusetts |