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