| Prefix | Plan Name | |
|---|---|---|
| H2A | Blue Cross Blue Shield of Illinois | |
| H2B | BCBS of Western New York | |
| H2C | Blue Cross Blue Shield of Illinois | |
| H2D | Blue Cross Blue Shield of Illinois | |
| H2F | Anthem BCBS of Indiana | |
| H2G | Blue Cross Blue Shield of Texas | |
| H2H | Blue Cross Blue Shield of Arkansas | |
| H2J | Blue Cross Blue Shield of Illinois | |
| H2K | Blue Cross Blue Shield of Illinois | |
| H2L | Anthem BCBS of Indiana | |
| H2M | Anthem BCBS of Virginia | |
| H2N | Horizon Blue Cross Blue Shield of New Jersey | |
| H2O | Highmark BCBS of Pennsylvania | |
| H2P | Blue Cross Blue Shield of Illinois | |
| H2Q | Anthem BCBS of Indiana | |
| H2R | BCBS of Western New York | |
| H2S | Anthem BCBS of Indiana | |
| H2U | Anthem BCBS of Indiana | |
| H2W | Horizon Blue Cross Blue Shield of New Jersey | |
| H2X | Blue Cross Blue Shield of Massachusetts | |
| H2Y | Horizon Blue Cross Blue Shield of New Jersey | |
| H2Z | Horizon Blue Cross Blue Shield of New Jersey | |
| H3A | Highmark BCBS of Pennsylvania | |
| H3B | Highmark BCBS of Pennsylvania | |
| H3C | Anthem BCBS of Virginia | |
| H3D | Blue Cross Blue Shield of Illinois | |
| H3E | Highmark BCBS of Pennsylvania | |
| H3F | Anthem BCBS of Virginia | |
| H3G | Premera Blue Cross | |
| H3H | Anthem BCBS of Virginia | |
| H3I | Highmark BCBS of Pennsylvania | |
| H3J | Anthem BCBS of Virginia | |
| H3K | Anthem BCBS of Virginia | |
| H3L | Highmark BCBS of Pennsylvania | |
| H3M | Blue Cross Blue Shield of Texas | |
| H3N | Blue Cross of California | |
| H3P | Highmark BCBS of Pennsylvania | |
| H3Q | Highmark BCBS of Pennsylvania | |
| H3R | Blue Cross Blue Shield of Illinois | |
| H3S | Horizon Blue Cross Blue Shield of New Jersey | |
| H3U | Blue Cross Blue Shield of Illinois | |
| H3Z | Anthem BCBS of Virginia | |
| H4A | Blue Cross Blue Shield of Illinois | |
| H4B | Blue Cross Blue Shield of Illinois | |
| H4C | Anthem BCBS of Virginia | |
| H4D | Blue Cross Blue Shield of Illinois | |
| H4F | Highmark BCBS of Pennsylvania | |
| H4G | Blue Cross of California | |
| H4H | Blue Cross Blue Shield of Rhode Island | |
| H4J | Highmark BCBS of Pennsylvania | |
| H4K | Highmark BCBS of Pennsylvania | |
| H4M | Anthem BCBS of Virginia | |
| H4N | Blue Cross of California | |
| H4O | Blue Cross of California | |
| H4R | Anthem BCBS of Colorado | |
| H4S | Anthem BCBS of Indiana | |
| H4T | Blue Cross Blue Shield of Texas | |
| H5D | Blue Cross Blue Shield of Texas | |
| H5G | Anthem BCBS of Virginia | |
| H5K | Horizon Blue Cross Blue Shield of New Jersey | |
| H5N | Anthem BCBS of Virginia | |
| H5P | Blue Cross of California | |
| H5R | Horizon Blue Cross Blue Shield of New Jersey | |
| H5T | Anthem BCBS of Virginia | |
| H6A | Blue Cross Blue Shield of Illinois | |
| H6C | Anthem BCBS of Virginia | |
| H6D | Blue Cross of California | |
| H6F | Empire Blue Cross Blue Shield | |
| H6G | Blue Cross of California | |
| H6H | Regence Blue Cross Blue Shield of Oregon | |
| H6N | Anthem BCBS of Virginia | |
| H6P | Blue Cross Blue Shield of Massachusetts | |
| H7B | Horizon Blue Cross Blue Shield of New Jersey | |
| H7C | Blue Cross Blue Shield of Illinois | |
| H7D | Blue Cross Blue Shield of Illinois | |
| H7G | Regence Blue Shield of Washington | |
| H7J | Horizon Blue Cross Blue Shield of New Jersey | |
| H7P | Horizon Blue Cross Blue Shield of New Jersey | |
| H8A | Anthem BCBS of Virginia | |
| H8D | Blue Cross Blue Shield of Illinois | |
| H8L | Blue Cross Blue Shield of Illinois | |
| H8P | Blue Cross of California | |
| H9K | Blue Cross Blue Shield of Illinois | |
| HAA | Horizon Blue Cross Blue Shield of New Jersey | |
| HAB | Horizon Blue Cross Blue Shield of New Jersey | |
| HAC | Horizon Blue Cross Blue Shield of New Jersey | |
| HAD | CareFirst BCBS | |
| HAE | Blue Cross Blue Shield of Massachusetts | |
| HAF | Horizon Blue Cross Blue Shield of New Jersey | |
| HAG | Blue Cross of California | |
| HAH | Anthem BCBS of Ohio | |
| HAI | Independence Blue Cross | |
| HAJ | Independence Blue Cross | |
| HAK | Unassigned | |
| HAL | Blue Cross Blue Shield of Minnesota | |
| HAM | Horizon Blue Cross Blue Shield of New Jersey | |
| HAN | Unassigned | |
| HAO | Blue Cross Blue Shield of Michigan | |
| HAP | Blue Cross Blue Shield of Oklahoma | |
| HAQ | Horizon Blue Cross Blue Shield of New Jersey |
| HAR | Regence Blue Shield of Idaho | |
| HAS | Blue Cross Blue Shield of Massachusetts | |
| HAT | Anthem BCBS of Ohio | |
| HAU | Anthem BCBS of Nevada | |
| HAV | Blue Cross Blue Shield of Illinois | |
| HAW | Blue Cross Blue Shield of Michigan | |
| HAX | Horizon Blue Cross Blue Shield of New Jersey | |
| HAY | Blue Cross Blue Shield of Texas | |
| HAZ | Horizon Blue Cross Blue Shield of New Jersey | |
| HBA | Anthem BCBS of Connecticut | |
| HBB | Blue Cross Blue Shield of Illinois | |
| HBC | Highmark BCBS of Pennsylvania | |
| HBD | Horizon Blue Cross Blue Shield of New Jersey | |
| HBE | Highmark BCBS of Pennsylvania | |
| HBF | Blue Cross Blue Shield of Georgia | |
| HBG | CareFirst BCBS | |
| HBH | Horizon Blue Cross Blue Shield of New Jersey | |
| HBI | Unassigned | |
| HBJ | Blue Cross Blue Shield of Arkansas | |
| HBK | Horizon Blue Cross Blue Shield of New Jersey | |
| HBL | Anthem BCBS of Missouri | |
| HBM | Horizon Blue Cross Blue Shield of New Jersey | |
| HBN | Blue Cross Blue Shield of Georgia | |
| HBO | Regence Blue Cross Blue Shield of Oregon | |
| HBP | Blue Cross Blue Shield of Minnesota | |
| HBQ | Blue Cross of California | |
| HBR | Blue Cross Blue Shield of Massachusetts | |
| HBS | Blue Cross Blue Shield of Arkansas | |
| HBT | Blue Cross Blue Shield of Texas | |
| HBU | Blue Cross Blue Shield of Georgia | |
| HBV | Blue Cross of California | |
| HBW | Blue Cross Blue Shield of North Carolina | |
| HBX | Horizon Blue Cross Blue Shield of New Jersey | |
| HBY | Horizon Blue Cross Blue Shield of New Jersey | |
| HBZ | Blue Cross Blue Shield of Arkansas | |
| HCA | Blue Cross Blue Shield of Minnesota | |
| HCB | Blue Cross Blue Shield of Texas | |
| HCC | CareFirst BCBS | |
| HCD | Horizon Blue Cross Blue Shield of New Jersey | |
| HCE | BCBS of Tennessee | |
| HCF | Anthem BCBS of Wisconsin | |
| HCG | Wellmark BCBS | |
| HCH | CareFirst BCBS | |
| HCI | Blue Cross Blue Shield of Nebraska | |
| HCJ | Blue Cross Blue Shield of Illinois | |
| HCK | Blue Cross of Idaho | |
| HCL | Blue Cross Blue Shield of Illinois | |
| HCM | Wellmark BCBS | |
| HCN | Blue Cross Blue Shield of Massachusetts | |
| HCO | Horizon Blue Cross Blue Shield of New Jersey | |
| HCP | Independence Blue Cross | |
| HCQ | Unassigned | |
| HCR | BCBS of Tennessee | |
| HCS | Regence Blue Cross Blue Shield of Oregon | |
| HCT | Highmark BCBS of Pennsylvania | |
| HCU | BCBS of Tennessee | |
| HCV | Wellmark BCBS | |
| HCW | Horizon Blue Cross Blue Shield of New Jersey | |
| HCX | Anthem BCBS of Ohio | |
| HCY | Anthem BCBS of Ohio | |
| HCZ | Blue Cross of California | |
| HDA | Regence Blue Cross Blue Shield of Oregon | |
| HDB | Blue Cross of California | |
| HDC | Blue Cross Blue Shield of Texas | |
| HDD | Blue Cross Blue Shield of Minnesota | |
| HDE | BCBS of Tennessee | |
| HDF | Blue Cross Blue Shield of Illinois | |
| HDG | Blue Cross Blue Shield of Mississippi | |
| HDH | Wellmark BCBS | |
| HDI | Blue Shield of California | |
| HDJ | Blue Cross of California | |
| HDK | Blue Cross Blue Shield of South Carolina | |
| HDL | Blue Cross of California | |
| HDM | Blue Cross Blue Shield of South Carolina | |
| HDN | BCBS of Tennessee | |
| HDO | Blue Cross of California | |
| HDP | Blue Cross of California | |
| HDQ | Blue Cross of California | |
| HDR | Blue Cross Blue Shield of Nebraska | |
| HDS | Blue Cross of California | |
| HDT | Blue Cross of California | |
| HDU | Blue Cross of California | |
| HDV | Blue Cross of California | |
| HDW | Blue Cross of California | |
| HDX | Blue Cross Blue Shield of Alabama | |
| HDY | Blue Cross of California | |
| HDZ | Blue Shield of California | |
| HEA | Blue Cross of California | |
| HEB | Blue Cross Blue Shield of Texas | |
| HEC | Highmark BCBS of Pennsylvania | |
| HED | Horizon Blue Cross Blue Shield of New Jersey | |
| HEE | Blue Cross Blue Shield of Illinois | |
| HEF | Horizon Blue Cross Blue Shield of New Jersey | |
| HEG | Blue Cross Blue Shield of Georgia | |
| HEH | Blue Cross Blue Shield of Kansas | |
| HEI | Blue Cross Blue Shield of Arkansas | |
| HEJ | Blue Cross Blue Shield of South Carolina | |
| HEK | BCBS of Michigan | |
| HEL | Blue Cross Blue Shield of Texas | |
| HEM | Highmark BCBS of Pennsylvania |
| HEN | Horizon Blue Cross Blue Shield of New Jersey | |
| HEO | Blue Cross of California | |
| HEP | Wellmark BCBS | |
| HEQ | Blue Cross Blue Shield of Illinois | |
| HER | CareFirst BCBS | |
| HES | Blue Cross Blue Shield of Georgia | |
| HET | Highmark BCBS of Pennsylvania | |
| HEU | Blue Cross Blue Shield of Massachusetts | |
| HEV | Wellmark BCBS | |
| HEW | Unassigned | |
| HEX | Blue Cross of California | |
| HEY | Blue Cross Blue Shield of Illinois | |
| HEZ | Blue Cross Blue Shield of Illinois | |
| HFA | Blue Cross Blue Shield of Illinois | |
| HFB | Anthem BCBS of Missouri | |
| HFC | Blue Cross Blue Shield of Massachusetts | |
| HFD | Blue Cross Blue Shield of Nebraska | |
| HFE | Anthem BCBS of New Hampshire | |
| HFF | Blue Cross of California | |
| HFG | Unassigned | |
| HFH | Highmark BCBS of Pennsylvania | |
| HFI | Blue Cross Blue Shield of South Carolina | |
| HFJ | Anthem BCBS of Wisconsin | |
| HFK | CareFirst BCBS | |
| HFL | Regence Blue Shield of Washington | |
| HFM | Horizon Blue Cross Blue Shield of New Jersey | |
| HFN | Blue Cross Blue Shield of Minnesota | |
| HFO | BCBS of Tennessee | |
| HFP | Blue Cross Blue Shield of Hawaii | |
| HFQ | Blue Cross Blue Shield of Georgia | |
| HFR | Horizon Blue Cross Blue Shield of New Jersey | |
| HFS | Blue Cross of California | |
| HFT | Regence Blue Shield of Washington | |
| HFU | Blue Cross Blue Shield of Georgia | |
| HFV | Blue Cross Blue Shield of Georgia | |
| HFW | Horizon Blue Cross Blue Shield of New Jersey | |
| HFX | Blue Cross Blue Shield of Minnesota | |
| HFY | Blue Cross Blue Shield of Georgia | |
| HFZ | Anthem BCBS of Ohio | |
| HGA | Blue Cross Blue Shield of Massachusetts | |
| HGB | CareFirst BCBS | |
| HGC | Unassigned | |
| HGD | Blue Cross Blue Shield of Texas | |
| HGE | Blue Cross Blue Shield of Minnesota | |
| HGF | Wellmark BCBS | |
| HGG | Wellmark BCBS | |
| HGH | Capital BlueCross | |
| HGI | Unassigned | |
| HGJ | CareFirst BCBS | |
| HGK | Blue Cross Blue Shield of Georgia | |
| HGL | Unassigned | |
| HGM | Wellmark BCBS | |
| HGN | Unassigned | |
| HGO | Regence Blue Shield of Washington | |
| HGP | Wellmark BCBS | |
| HGQ | Blue Cross Blue Shield of Michigan | |
| HGR | Blue Cross Blue Shield of Alabama | |
| HGS | Horizon Blue Cross Blue Shield of New Jersey | |
| HGT | CareFirst BCBS | |
| HGU | Unassigned | |
| HGV | Unassigned | |
| HGW | Blue Cross of California | |
| HGX | Highmark BCBS of Pennsylvania | |
| HGY | CareFirst BCBS | |
| HGZ | Highmark BCBS of Pennsylvania | |
| HHA | Unassigned | |
| HHB | Empire Blue Cross Blue Shield | |
| HHC | Anthem BCBS of Connecticut | |
| HHD | Wellmark BCBS | |
| HHE | Anthem BCBS of Connecticut | |
| HHF | Wellmark BCBS | |
| HHG | Blue Cross Blue Shield of Wisconsin | |
| HHH | Anthem BCBS of Kentucky | |
| HHI | Wellmark BCBS | |
| HHJ | Blue Cross Blue Shield of Michigan | |
| HHK | Blue Cross Blue Shield of Texas | |
| HHL | Blue Cross Blue Shield of Michigan | |
| HHM | Blue Cross Blue Shield of South Carolina | |
| HHN | Blue Cross Blue Shield of Alabama | |
| HHO | Wellmark BCBS | |
| HHP | Horizon Blue Cross Blue Shield of New Jersey | |
| HHQ | Wellmark BCBS | |
| HHR | Anthem BCBS of Virginia | |
| HHS | Blue Cross of Idaho | |
| HHT | Anthem BCBS of Ohio | |
| HHU | Blue Cross Blue Shield of Illinois | |
| HHV | Blue Cross Blue Shield of Massachusetts | |
| HHW | Horizon Blue Cross Blue Shield of New Jersey | |
| HHX | Capital BlueCross | |
| HHY | Blue Cross Blue Shield of Minnesota | |
| HHZ | Blue Cross Blue Shield of South Carolina | |
| HIA | Unassigned | |
| HIB | Blue Cross Blue Shield of Alabama | |
| HIC | Unassigned | |
| HID | Blue Cross of California | |
| HIE | Blue Cross Blue Shield of Massachusetts | |
| HIF | Blue Cross of Idaho | |
| HIG | Blue Shield of California | |
| HIH | Wellmark BCBS | |
| HII | Blue Shield of California |
| HIJ | Wellmark BCBS | |
| HIK | Blue Cross Blue Shield of South Carolina | |
| HIL | Blue Cross Blue Shield of South Carolina | |
| HIM | Highmark BCBS of Pennsylvania | |
| HIN | Blue Cross Blue Shield of Vermont | |
| HIO | Blue Cross Blue Shield of Michigan | |
| HIP | Highmark BCBS of Pennsylvania | |
| HIQ | Blue Shield of California | |
| HIR | Blue Cross Blue Shield of Minnesota | |
| HIS | Blue Cross Blue Shield of Kansas City | |
| HIT | Highmark BCBS of Pennsylvania | |
| HIU | BCBS of Tennessee | |
| HIV | Regence Blue Cross Blue Shield of Oregon | |
| HIW | Blue Cross Blue Shield of Georgia | |
| HIX | Blue Cross Blue Shield of South Carolina | |
| HIY | Blue Cross Blue Shield of Georgia | |
| HIZ | Regence Blue Cross Blue Shield of Oregon | |
| HJA | Blue Cross of California | |
| HJB | Anthem BCBS of Ohio | |
| HJC | Blue Cross Blue Shield of Michigan | |
| HJD | Blue Cross Blue Shield of Illinois | |
| HJE | Blue Cross Blue Shield of Nebraska | |
| HJF | Blue Cross of California | |
| HJG | Highmark BCBS of Pennsylvania | |
| HJH | Blue Cross Blue Shield of Illinois | |
| HJI | Blue Cross Blue Shield of Michigan | |
| HJJ | Blue Cross Blue Shield of Texas | |
| HJK | Blue Cross Blue Shield of Texas | |
| HJL | Blue Cross Blue Shield of Illinois | |
| HJM | Blue Shield of California | |
| HJN | Horizon Blue Cross Blue Shield of New Jersey | |
| HJO | Anthem BCBS of Kentucky | |
| HJP | Blue Shield of California | |
| HJQ | Blue Shield of California | |
| HJR | Highmark BCBS of Pennsylvania | |
| HJS | CareFirst BCBS | |
| HJT | CareFirst BCBS | |
| HJU | Wellmark BCBS | |
| HJV | Blue Cross Blue Shield of Alabama | |
| HJW | Empire Blue Cross Blue Shield | |
| HJX | Highmark BCBS of Pennsylvania | |
| HJY | Blue Cross Blue Shield of Michigan | |
| HJZ | Wellmark BCBS | |
| HKA | CareFirst BCBS | |
| HKB | Anthem BCBS of Virginia | |
| HKC | Wellmark BCBS | |
| HKD | Blue Cross Blue Shield of Michigan | |
| HKE | Anthem BCBS of Kentucky | |
| HKF | Wellmark BCBS | |
| HKG | Anthem BCBS of Kentucky | |
| HKH | Empire Blue Cross Blue Shield | |
| HKI | Blue Cross Blue Shield of Michigan | |
| HKJ | CareFirst BCBS | |
| HKK | Anthem BCBS of Virginia | |
| HKL | Blue Cross Blue Shield of Massachusetts | |
| HKM | Blue Cross Blue Shield of Georgia | |
| HKN | CareFirst BCBS | |
| HKO | Blue Shield of California | |
| HKP | Blue Cross Blue Shield of Michigan | |
| HKQ | Anthem BCBS of Virginia | |
| HKR | Blue Cross Blue Shield of Illinois | |
| HKS | Regence Blue Shield of Washington | |
| HKT | Wellmark BCBS | |
| HKU | Blue Cross Blue Shield of Minnesota | |
| HKV | Blue Cross Blue Shield of Illinois | |
| HKW | CareFirst BCBS | |
| HKX | Unassigned | |
| HKY | CareFirst BCBS | |
| HKZ | Independence Blue Cross | |
| HLA | Anthem BCBS of Ohio | |
| HLB | Anthem BCBS of Ohio | |
| HLC | Premera Blue Cross | |
| HLD | Premera Blue Cross | |
| HLE | Blue Shield of California | |
| HLF | Anthem BCBS of Missouri | |
| HLG | Anthem BCBS of Ohio | |
| HLH | Blue Cross Blue Shield of Texas | |
| HLI | Blue Cross of Idaho | |
| HLJ | Blue Cross Blue Shield of South Carolina | |
| HLK | Anthem BCBS of Ohio | |
| HLL | Unassigned | |
| HLM | Horizon Blue Cross Blue Shield of New Jersey | |
| HLN | Blue Cross Blue Shield of Illinois | |
| HLO | Anthem BCBS of Missouri | |
| HLP | Wellmark BCBS | |
| HLQ | Anthem BCBS of Missouri | |
| HLR | Horizon Blue Cross Blue Shield of New Jersey | |
| HLS | Blue Cross Blue Shield of South Carolina | |
| HLT | Blue Cross Blue Shield of Massachusetts | |
| HLU | Premera Blue Cross | |
| HLV | Blue Cross Blue Shield of Texas | |
| HLW | Empire Blue Cross Blue Shield | |
| HLX | Blue Cross Blue Shield of Massachusetts | |
| HLY | Blue Cross Blue Shield of Texas | |
| HLZ | Anthem BCBS of Ohio | |
| HMA | Blue Cross Blue Shield of South Carolina | |
| HMB | Horizon Blue Cross Blue Shield of New Jersey | |
| HMC | Wellmark BCBS | |
| HMD | Blue Cross Blue Shield of Alabama | |
| HME | Blue Cross Blue Shield of Texas |
| HMF | Blue Cross Blue Shield of Nebraska | |
| HMG | Blue Cross Blue Shield of Georgia | |
| HMH | Anthem BCBS of Wisconsin | |
| HMI | Blue Cross Blue Shield of Massachusetts | |
| HMJ | CareFirst BCBS | |
| HMK | Blue Cross Blue Shield of Nebraska | |
| HML | Blue Cross Blue Shield of Alabama | |
| HMM | Blue Cross Blue Shield of Georgia | |
| HMN | Wellmark BCBS | |
| HMO | Blue Cross Blue Shield of Arkansas | |
| HMP | Wellmark BCBS | |
| HMQ | Blue Cross Blue Shield of Minnesota | |
| HMR | Excellus BCBS | |
| HMS | Premera Blue Cross | |
| HMT | Empire Blue Cross Blue Shield | |
| HMU | Blue Cross of Idaho | |
| HMV | Empire Blue Cross Blue Shield | |
| HMW | Blue Cross Blue Shield of Georgia | |
| HMX | Wellmark BCBS | |
| HMY | Blue Cross Blue Shield of South Carolina | |
| HMZ | Empire Blue Cross Blue Shield | |
| HNA | Blue Cross Blue Shield of Alabama | |
| HNB | Unassigned | |
| HNC | Anthem BCBS of Ohio | |
| HND | Regence Blue Cross Blue Shield of Oregon | |
| HNE | Blue Cross Blue Shield of South Carolina | |
| HNF | Blue Cross Blue Shield of Texas | |
| HNG | Highmark BCBS of Pennsylvania | |
| HNH | Blue Cross of California | |
| HNI | Blue Cross Blue Shield of Massachusetts | |
| HNJ | Highmark BCBS of Pennsylvania | |
| HNK | Blue Cross Blue Shield of Massachusetts | |
| HNL | Highmark BCBS of Pennsylvania | |
| HNM | Anthem BCBS of Ohio | |
| HNN | Highmark BCBS of Pennsylvania | |
| HNO | Blue Shield of California | |
| HNP | Anthem BCBS of Ohio | |
| HNQ | Independence Blue Cross | |
| HNR | Blue Cross of California | |
| HNS | Anthem BCBS of Wisconsin | |
| HNT | Blue Cross Blue Shield of Texas | |
| HNU | Regence Blue Shield of Washington | |
| HNV | Anthem BCBS of Ohio | |
| HNW | Blue Cross Blue Shield of Georgia | |
| HNX | Blue Cross Blue Shield of Michigan | |
| HNY | Blue Cross Blue Shield of Michigan | |
| HNZ | Blue Cross Blue Shield of Michigan | |
| HOA | Blue Cross Blue Shield of Michigan | |
| HOB | Blue Cross Blue Shield of Mississippi | |
| HOC | Blue Cross Blue Shield of Georgia | |
| HOD | Blue Cross Blue Shield of Georgia | |
| HOE | Blue Cross Blue Shield of South Carolina | |
| HOF | Unassigned | |
| HOG | Independence Blue Cross | |
| HOH | CareFirst BCBS | |
| HOI | Blue Cross of Idaho | |
| HOJ | Blue Cross Blue Shield of Massachusetts | |
| HOK | CareFirst BCBS | |
| HOL | Blue Cross Blue Shield of South Carolina | |
| HOM | Blue Cross Blue Shield of Nebraska | |
| HON | Wellmark BCBS | |
| HOO | CareFirst BCBS | |
| HOP | Premera Blue Cross | |
| HOQ | Independence Blue Cross | |
| HOR | Independence Blue Cross | |
| HOS | Blue Cross Blue Shield of Massachusetts | |
| HOT | Blue Cross Blue Shield of Massachusetts | |
| HOU | Anthem BCBS of Ohio | |
| HOV | Highmark BCBS of Pennsylvania | |
| HOW | Blue Cross Blue Shield of Alabama | |
| HOX | Blue Cross Blue Shield of Massachusetts | |
| HOY | CareFirst BCBS | |
| HOZ | CareFirst BCBS | |
| HPA | Horizon Blue Cross Blue Shield of New Jersey | |
| HPB | Anthem BCBS of Missouri | |
| HPC | Blue Cross Blue Shield of South Carolina | |
| HPD | Blue Cross Blue Shield of Massachusetts | |
| HPE | Blue Cross of California | |
| HPF | Horizon Blue Cross Blue Shield of New Jersey | |
| HPG | Blue Cross Blue Shield of South Carolina | |
| HPH | Anthem BCBS of Colorado | |
| HPI | Capital BlueCross | |
| HPJ | Blue Cross Blue Shield of Michigan | |
| HPK | Blue Cross of California | |
| HPL | Blue Cross of California | |
| HPM | Blue Shield of California | |
| HPN | Anthem BCBS of Virginia | |
| HPO | Blue Cross Blue Shield of North Carolina | |
| HPP | Blue Cross Blue Shield of Illinois | |
| HPQ | Blue Cross of California | |
| HPR | Horizon Blue Cross Blue Shield of New Jersey | |
| HPS | CareFirst BCBS | |
| HPT | Blue Cross Blue Shield of Oklahoma | |
| HPU | Blue Cross Blue Shield of Illinois | |
| HPV | Blue Cross of California | |
| HPW | CareFirst BCBS | |
| HPX | Blue Cross Blue Shield of Alabama | |
| HPY | Empire Blue Cross Blue Shield | |
| HPZ | Florida Blue | |
| HQA | Unassigned |
| HQB | Unassigned | |
| HQC | Blue Cross Blue Shield of Minnesota | |
| HQD | Wellmark BCBS | |
| HQE | Anthem BCBS of Missouri | |
| HQF | Anthem BCBS of Ohio | |
| HQG | Blue Cross Blue Shield of Georgia | |
| HQH | Blue Cross Blue Shield of Kansas City | |
| HQI | Blue Cross Blue Shield of North Carolina | |
| HQJ | Blue Cross Blue Shield of Massachusetts | |
| HQK | Unassigned | |
| HQL | Anthem BCBS of Missouri | |
| HQM | Blue Cross Blue Shield of South Carolina | |
| HQN | Wellmark BCBS | |
| HQO | BCBS of Western New York | |
| HQP | Anthem BCBS of Missouri | |
| HQQ | Regence Blue Cross Blue Shield of Oregon | |
| HQR | BCBS of Western New York | |
| HQS | Blue Shield of Northeastern New York | |
| HQT | BCBS of Western New York | |
| HQU | Blue Cross Blue Shield of Michigan | |
| HQV | Unassigned | |
| HQW | Regence Blue Cross Blue Shield of Utah | |
| HQX | Blue Shield of Northeastern New York | |
| HQY | Blue Cross Blue Shield of Illinois | |
| HQZ | Blue Cross Blue Shield of Minnesota | |
| HRA | BCBS of Tennessee | |
| HRB | Horizon Blue Cross Blue Shield of New Jersey | |
| HRC | Capital BlueCross | |
| HRD | Wellmark BCBS | |
| HRE | Blue Cross Blue Shield of Illinois | |
| HRF | Highmark BCBS of Pennsylvania | |
| HRG | Wellmark BCBS | |
| HRH | Blue Cross of California | |
| HRI | Blue Cross Blue Shield of Minnesota | |
| HRJ | Blue Cross of California | |
| HRK | Premera Blue Cross | |
| HRL | Blue Cross Blue Shield of Minnesota | |
| HRM | Highmark BCBS of Pennsylvania | |
| HRN | Premera Blue Cross | |
| HRO | Capital BlueCross | |
| HRP | CareFirst BCBS | |
| HRQ | Blue Cross Blue Shield of Minnesota | |
| HRR | Blue Cross Blue Shield of Illinois | |
| HRS | Premera Blue Cross | |
| HRT | Highmark BCBS of Pennsylvania | |
| HRU | BCBS of Western New York | |
| HRV | Blue Cross Blue Shield of Nebraska | |
| HRW | Blue Cross Blue Shield of Illinois | |
| HRX | Unassigned | |
| HRY | Anthem BCBS of Virginia | |
| HRZ | Regence Blue Cross Blue Shield of Oregon | |
| HSA | Horizon Blue Cross Blue Shield of New Jersey | |
| HSB | Blue Cross Blue Shield of Texas | |
| HSC | Premera Blue Cross | |
| HSD | Horizon Blue Cross Blue Shield of New Jersey | |
| HSE | Horizon Blue Cross Blue Shield of New Jersey | |
| HSF | Horizon Blue Cross Blue Shield of New Jersey | |
| HSG | Horizon Blue Cross Blue Shield of New Jersey | |
| HSH | Horizon Blue Cross Blue Shield of New Jersey | |
| HSI | Independence Blue Cross | |
| HSJ | Horizon Blue Cross Blue Shield of New Jersey | |
| HSK | Blue Cross Blue Shield of Illinois | |
| HSL | Horizon Blue Cross Blue Shield of New Jersey | |
| HSM | BCBS of Tennessee | |
| HSN | Highmark BCBS of Pennsylvania | |
| HSO | Blue Cross Blue Shield of Michigan | |
| HSP | Premera Blue Cross | |
| HSQ | Horizon Blue Cross Blue Shield of New Jersey | |
| HSR | Highmark BCBS of Pennsylvania | |
| HSS | Blue Cross Blue Shield of Minnesota | |
| HST | Blue Cross Blue Shield of Texas | |
| HSU | Horizon Blue Cross Blue Shield of New Jersey | |
| HSV | Blue Cross Blue Shield of Nebraska | |
| HSW | CareFirst BCBS | |
| HSX | Blue Cross Blue Shield of Michigan | |
| HSY | Blue Cross Blue Shield of Georgia | |
| HSZ | Blue Cross Blue Shield of Massachusetts | |
| HTA | Empire Blue Cross Blue Shield | |
| HTB | Blue Cross Blue Shield of Minnesota | |
| HTC | Blue Cross Blue Shield of Texas | |
| HTD | Blue Cross Blue Shield of Illinois | |
| HTE | Blue Cross Blue Shield of Illinois | |
| HTF | Anthem BCBS of Ohio | |
| HTG | CareFirst BCBS | |
| HTH | Premera Blue Cross | |
| HTI | Blue Cross of Idaho | |
| HTJ | Blue Cross Blue Shield of Illinois | |
| HTK | Horizon Blue Cross Blue Shield of New Jersey | |
| HTL | Blue Shield of California | |
| HTM | Horizon Blue Cross Blue Shield of New Jersey | |
| HTN | Blue Cross Blue Shield of Rhode Island | |
| HTO | CareFirst BCBS | |
| HTP | CareFirst BCBS | |
| HTQ | Unassigned | |
| HTR | Blue Shield of California | |
| HTS | Premera Blue Cross | |
| HTT | Blue Cross Blue Shield of Georgia | |
| HTU | Blue Cross Blue Shield of South Carolina | |
| HTV | Blue Cross Blue Shield of Texas | |
| HTW | Blue Cross of California |
| HTX | Blue Cross Blue Shield of South Carolina | |
| HTY | Highmark BCBS of Pennsylvania | |
| HTZ | Blue Cross Blue Shield of Illinois | |
| HUA | Blue Cross Blue Shield of Massachusetts | |
| HUB | Highmark BCBS of Pennsylvania | |
| HUC | Blue Cross Blue Shield of Michigan | |
| HUD | Empire Blue Cross Blue Shield | |
| HUE | Anthem BCBS of Connecticut | |
| HUF | Horizon Blue Cross Blue Shield of New Jersey | |
| HUG | Anthem BCBS of Colorado | |
| HUH | Anthem BCBS of Wisconsin | |
| HUI | Unassigned | |
| HUJ | Blue Cross Blue Shield of South Carolina | |
| HUK | CareFirst BCBS | |
| HUL | Premera Blue Cross | |
| HUM | Highmark BCBS of Pennsylvania | |
| HUN | Wellmark BCBS | |
| HUO | Excellus BCBS | |
| HUP | Blue Cross Blue Shield of Kansas City | |
| HUQ | Blue Cross Blue Shield of Kansas City | |
| HUR | Blue Cross Blue Shield of Illinois | |
| HUS | Blue Cross Blue Shield of Michigan | |
| HUT | Blue Cross Blue Shield of Michigan | |
| HUU | Blue Cross Blue Shield of Kansas City | |
| HUV | Wellmark BCBS | |
| HUW | Empire Blue Cross Blue Shield | |
| HUX | Anthem BCBS of Ohio | |
| HUY | Blue Cross Blue Shield of Alabama | |
| HUZ | Wellmark BCBS | |
| HVA | Blue Cross Blue Shield of Massachusetts | |
| HVB | Blue Cross Blue Shield of Minnesota | |
| HVC | Blue Cross Blue Shield of Georgia | |
| HVD | Horizon Blue Cross Blue Shield of New Jersey | |
| HVE | Wellmark BCBS | |
| HVF | Blue Cross Blue Shield of Massachusetts | |
| HVG | Anthem BCBS of Ohio | |
| HVH | Anthem BCBS of Kentucky | |
| HVI | Blue Shield of California | |
| HVJ | Highmark BCBS of Pennsylvania | |
| HVK | Anthem Blue Cross of California | |
| HVL | Excellus BCBS | |
| HVM | Blue Cross Blue Shield of Massachusetts | |
| HVN | Anthem BCBS of Ohio | |
| HVO | Anthem BCBS of Ohio | |
| HVP | Blue Cross Blue Shield of Michigan | |
| HVQ | CareFirst BCBS | |
| HVR | Anthem BCBS of Wisconsin | |
| HVS | Unassigned | |
| HVT | Blue Cross of California | |
| HVU | CareFirst BCBS | |
| HVV | Blue Cross Blue Shield of Nebraska | |
| HVW | Unassigned | |
| HVX | Anthem BCBS of Ohio | |
| HVY | Blue Cross Blue Shield of South Carolina | |
| HVZ | Blue Cross Blue Shield of Georgia | |
| HWA | Horizon Blue Cross Blue Shield of New Jersey | |
| HWB | Horizon Blue Cross Blue Shield of New Jersey | |
| HWC | Unassigned | |
| HWD | Blue Cross of California | |
| HWE | Horizon Blue Cross Blue Shield of New Jersey | |
| HWF | Anthem BCBS of Ohio | |
| HWG | Wellmark BCBS | |
| HWH | Blue Cross of California | |
| HWI | Wellmark BCBS | |
| HWJ | CareFirst BCBS | |
| HWK | Anthem BCBS of Ohio | |
| HWL | Anthem BCBS of Ohio | |
| HWM | Blue Cross of Idaho | |
| HWN | CareFirst BCBS | |
| HWO | CareFirst BCBS | |
| HWP | Anthem BCBS of Ohio | |
| HWQ | Horizon Blue Cross Blue Shield of New Jersey | |
| HWR | Blue Cross Blue Shield of Massachusetts | |
| HWS | Regence Blue Cross Blue Shield of Utah | |
| HWT | Anthem BCBS of Colorado | |
| HWU | Anthem BCBS of Kentucky | |
| HWV | Anthem BCBS of Ohio | |
| HWW | Horizon Blue Cross Blue Shield of New Jersey | |
| HWX | Wellmark BCBS | |
| HWY | Premera Blue Cross | |
| HWZ | Blue Cross Blue Shield of Montana | |
| HXA | Blue Cross Blue Shield of Massachusetts | |
| HXB | Anthem BCBS of Colorado | |
| HXC | Anthem BCBS of Ohio | |
| HXD | Unassigned | |
| HXE | Anthem BCBS of Wisconsin | |
| HXF | Anthem BCBS of Nevada | |
| HXG | Blue Cross Blue Shield of Georgia | |
| HXH | Unassigned | |
| HXI | Blue Shield of California | |
| HXJ | Anthem BCBS of Indiana | |
| HXK | Wellmark BCBS | |
| HXL | Unassigned | |
| HXM | Anthem BCBS of Virginia | |
| HXN | Anthem BCBS of Ohio | |
| HXO | Blue Cross Blue Shield of Nebraska | |
| HXP | Wellmark BCBS | |
| HXQ | Blue Cross Blue Shield of Alabama | |
| HXR | Premera Blue Cross | |
| HXS | Horizon Blue Cross Blue Shield of New Jersey |
| HXT | Independence Blue Cross | |
| HXU | Anthem BCBS of Indiana | |
| HXV | Anthem BCBS of Indiana | |
| HXW | Blue Cross of California | |
| HXX | CareFirst BCBS | |
| HXY | Regence Blue Shield of Washington | |
| HXZ | Wellmark BCBS | |
| HYA | Premera Blue Cross | |
| HYB | Horizon Blue Cross Blue Shield of New Jersey | |
| HYC | Blue Shield of California | |
| HYD | Blue Cross Blue Shield of Kansas City | |
| HYE | Blue Cross of California | |
| HYF | Blue Cross Blue Shield of Arizona | |
| HYG | Blue Cross Blue Shield of Michigan | |
| HYH | Blue Shield of California | |
| HYI | Wellmark BCBS | |
| HYJ | Blue Cross Blue Shield of Illinois | |
| HYK | Blue Cross Blue Shield of Illinois | |
| HYL | Anthem BCBS of Virginia | |
| HYM | Wellmark BCBS | |
| HYN | Blue Cross Blue Shield of Alabama | |
| HYO | Capital BlueCross | |
| HYP | Blue Cross Blue Shield of Georgia | |
| HYQ | Blue Cross Blue Shield of Michigan | |
| HYR | Highmark BCBS of Pennsylvania | |
| HYS | Anthem BCBS of Ohio | |
| HYT | Blue Cross Blue Shield of Illinois | |
| HYU | Blue Cross of California | |
| HYV | Wellmark BCBS | |
| HYW | Blue Cross Blue Shield of Illinois | |
| HYX | Wellmark BCBS | |
| HYY | Blue Cross Blue Shield of North Carolina | |
| HYZ | Wellmark BCBS | |
| HZA | Blue Cross Blue Shield of Georgia | |
| HZB | Florida Blue | |
| HZC | Blue Cross Blue Shield of Illinois | |
| HZD | Blue Cross Blue Shield of Illinois | |
| HZE | Unassigned | |
| HZF | Blue Cross Blue Shield of Illinois | |
| HZG | Anthem BCBS of Indiana | |
| HZH | Wellmark BCBS | |
| HZI | Blue Cross Blue Shield of Nebraska | |
| HZJ | Premera Blue Cross | |
| HZK | Blue Cross Blue Shield of Illinois | |
| HZL | Blue Cross Blue Shield of Texas | |
| HZM | BCBS of Western New York | |
| HZN | Anthem BCBS of Indiana | |
| HZO | Blue Cross Blue Shield of Rhode Island | |
| HZP | Unassigned | |
| HZQ | Blue Shield of California | |
| HZR | Premera Blue Cross | |
| HZS | Blue Shield of California | |
| HZT | Highmark BCBS of Pennsylvania | |
| HZU | Premera Blue Cross | |
| HZV | Blue Cross of California | |
| HZW | Blue Cross Blue Shield of Michigan | |
| HZX | Blue Cross Blue Shield of Michigan | |
| HZY | Blue Cross Blue Shield of Texas | |
| HZZ | Anthem BCBS of Ohio |