| RAA | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RAB | Florida | Florida-Blue |
| RAC | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RAD | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RAE | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| RAF | - | Unallocated/Not Assigned |
| RAG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RAH | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| RAI | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RAJ | Alabama | Blue-Cross Blue-Shield of Alabama |
| RAK | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RAL | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RAM | Texas | Blue-Cross Blue-Shield of Texas |
| RAN | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RAO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RAP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RAQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RAR | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| RAS | California | Blue-Shield of California |
| RAT | California | Anthem Blue-Cross |
| RAU | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| RAV | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| RAW | - | Unallocated/Not Assigned |
| RAX | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RAY | - | Unallocated/Not Assigned |
| RAZ | California | Blue-Shield of California |
| RBA | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RBB | - | Unallocated/Not Assigned |
| RBC | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RBD | - | Unallocated/Not Assigned |
| RBE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RBF | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RBG | Illinois | Blue-Cross Blue-Shield of Illinois |
| RBH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RBI | Mississippi | Blue-Cross Blue-Shield of Mississippi |
| RBJ | - | Unallocated/Not Assigned |
| RBK | Florida | Florida-Blue |
| RBL | California | Anthem Blue-Cross |
| RBM | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| RBN | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| RBO | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RBP | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RBQ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RBR | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RBS | Texas | Blue-Cross Blue-Shield of Texas |
| RBT | Illinois | Blue-Cross Blue-Shield of Illinois |
| RBU | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RBV | - | Unallocated/Not Assigned |
| RBW | - | Unallocated/Not Assigned |
| RBX | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| RBY | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RBZ | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| RCA | - | Unallocated/Not Assigned |
| RCB | Idaho | Blue-Cross of Idaho |
| RCC | New York | Empire Blue-Cross Blue-Shield of New York |
| RCD | - | Unallocated/Not Assigned |
| RCE | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RCF | Alabama | Blue-Cross Blue-Shield of Alabama |
| RCG | - | Unallocated/Not Assigned |
| RCH | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RCI | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| RCJ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RCK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RCL | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| RCM | Alabama | Blue-Cross Blue-Shield of Alabama |
| RCN | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RCO | - | Unallocated/Not Assigned |
| RCP | - | Unallocated/Not Assigned |
| RCQ | Texas | Blue-Cross Blue-Shield of Texas |
| RCR | Illinois | Blue-Cross Blue-Shield of Illinois |
| RCS | - | Unallocated/Not Assigned |
| RCT | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| RCU | - | Unallocated/Not Assigned |
| RCV | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RCW | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| RCX | - | Unallocated/Not Assigned |
| RCY | Illinois | Blue-Cross Blue-Shield of Illinois |
| RCZ | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| RDA | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RDB | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| RDC | - | Unallocated/Not Assigned |
| RDD | North Dakota | Blue-Cross Blue-Shield of North Dakota |
| RDE | - | Unallocated/Not Assigned |
| RDF | New York | Empire Blue-Cross Blue-Shield of New York |
| RDG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RDH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RDI | - | Unallocated/Not Assigned |
| RDJ | - | Unallocated/Not Assigned |
| RDK | - | Unallocated/Not Assigned |
| RDL | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RDM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RDN | California | Blue-Shield of California |
| RDO | - | Unallocated/Not Assigned |
| RDP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RDQ | - | Unallocated/Not Assigned |
| RDR | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RDS | Michigan | Blue-Cross Blue-Shield of Michigan |
| RDT | California | Blue-Shield of California |
| RDU | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| RDV | - | Unallocated/Not Assigned |
| RDW | - | Unallocated/Not Assigned |
| RDX | California | Anthem Blue-Cross |
| RDY | - | Unallocated/Not Assigned |
| RDZ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| REA | California | Blue-Shield of California |
| REB | - | Unallocated/Not Assigned |
| REC | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RED | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| REE | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| REF | Texas | Blue-Cross Blue-Shield of Texas |
| REG | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| REH | - | Unallocated/Not Assigned |
| REI | California | Blue-Shield of California |
| REJ | Michigan | Blue-Cross Blue-Shield of Michigan |
| REK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| REL | - | Unallocated/Not Assigned |
| REM | Vermont | Blue-Cross Blue-Shield of Vermont |
| REN | Michigan | Blue-Cross Blue-Shield of Michigan |
| REO | - | Unallocated/Not Assigned |
| REP | New York | Empire Blue-Cross Blue-Shield of New York |
| REQ | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RER | California | Anthem Blue-Cross |
| RES | - | Unallocated/Not Assigned |
| RET | Texas | Blue-Cross Blue-Shield of Texas |
| REU | California | Anthem Blue-Cross |
| REV | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| REW | California | Blue-Shield of California |
| REX | Texas | Blue-Cross Blue-Shield of Texas |
| REY | Texas | Blue-Cross Blue-Shield of Texas |
| REZ | - | Unallocated/Not Assigned |
| RFA | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| RFB | New York | Empire Blue-Cross Blue-Shield of New York |
| RFC | Florida | Florida-Blue |
| RFD | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RFE | - | Unallocated/Not Assigned |
| RFF | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RFG | California | Anthem Blue-Cross |
| RFH | Illinois | Blue-Cross Blue-Shield of Illinois |
| RFI | - | Unallocated/Not Assigned |
| RFJ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RFK | Illinois | Blue-Cross Blue-Shield of Illinois |
| RFL | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RFM | - | Unallocated/Not Assigned |
| RFN | - | Unallocated/Not Assigned |
| RFO | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| RFP | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RFQ | - | Unallocated/Not Assigned |
| RFR | - | Unallocated/Not Assigned |
| RFS | California | Blue-Shield of California |
| RFT | California | Blue-Shield of California |
| RFU | - | Unallocated/Not Assigned |
| RFV | Michigan | Blue-Cross Blue-Shield of Michigan |
| RFW | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RFX | Idaho | Blue-Cross of Idaho |
| RFY | Michigan | Blue-Cross Blue-Shield of Michigan |
| RFZ | California | Anthem Blue-Cross |
| RGA | California | Anthem Blue-Cross |
| RGB | Illinois | Blue-Cross Blue-Shield of Illinois |
| RGC | Texas | Blue-Cross Blue-Shield of Texas |
| RGD | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RGE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RGF | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| RGG | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| RGH | Texas | Blue-Cross Blue-Shield of Texas |
| RGI | Michigan | Blue-Cross Blue-Shield of Michigan |
| RGJ | - | Unallocated/Not Assigned |
| RGK | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| RGL | Illinois | Blue-Cross Blue-Shield of Illinois |
| RGM | California | Anthem Blue-Cross |
| RGN | Alabama | Blue-Cross Blue-Shield of Alabama |
| RGO | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| RGP | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RGQ | - | Unallocated/Not Assigned |
| RGR | - | Unallocated/Not Assigned |
| RGS | Idaho | Blue-Cross of Idaho |
| RGT | Alabama | Blue-Cross Blue-Shield of Alabama |
| RGU | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RGV | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| RGW | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RGX | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| RGY | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RGZ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RHA | California | Blue-Shield of California |
| RHB | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RHC | - | Unallocated/Not Assigned |
| RHD | - | Unallocated/Not Assigned |
| RHE | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| RHF | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| RHG | - | Unallocated/Not Assigned |
| RHH | Texas | Blue-Cross Blue-Shield of Texas |
| RHI | - | Unallocated/Not Assigned |
| RHJ | Florida | Florida-Blue |
| RHK | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| RHL | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| RHM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RHN | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RHO | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RHP | California | Anthem Blue-Cross |
| RHQ | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| RHR | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| RHS | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| RHT | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RHU | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| RHV | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RHW | Texas | Blue-Cross Blue-Shield of Texas |
| RHX | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RHY | Illinois | Blue-Cross Blue-Shield of Illinois |
| RHZ | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| RIA | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| RIB | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| RIC | - | Unallocated/Not Assigned |
| RID | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RIE | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RIF | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RIG | Michigan | Blue-Cross Blue-Shield of Michigan |
| RIH | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RII | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| RIJ | California | Blue-Shield of California |
| RIK | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RIL | - | Unallocated/Not Assigned |
| RIM | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| RIN | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| RIO | - | Unallocated/Not Assigned |
| RIP | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RIQ | Michigan | Blue-Cross Blue-Shield of Michigan |
| RIR | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RIS | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| RIT | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RIU | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| RIV | California | Blue-Shield of California |
| RIW | - | Unallocated/Not Assigned |
| RIX | California | Blue-Shield of California |
| RIY | Florida | Florida-Blue |
| RIZ | Alabama | Blue-Cross Blue-Shield of Alabama |
| RJA | - | Unallocated/Not Assigned |
| RJB | - | Unallocated/Not Assigned |
| RJC | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| RJD | - | Unallocated/Not Assigned |
| RJE | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RJF | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| RJG | - | Unallocated/Not Assigned |
| RJH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RJI | - | Unallocated/Not Assigned |
| RJJ | - | Unallocated/Not Assigned |
| RJK | Oklahoma | Blue-Cross Blue-Shield of Oklahoma |
| RJL | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RJM | - | Unallocated/Not Assigned |
| RJN | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RJO | - | Unallocated/Not Assigned |
| RJP | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| RJQ | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RJR | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RJS | Florida | Florida-Blue |
| RJT | California | Anthem Blue-Cross |
| RJU | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RJV | Illinois | Blue-Cross Blue-Shield of Illinois |
| RJW | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| RJX | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RJY | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RJZ | Michigan | Blue-Cross Blue-Shield of Michigan |
| RKA | New York | Empire Blue-Cross Blue-Shield of New York |
| RKB | - | Unallocated/Not Assigned |
| RKC | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| RKD | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| RKE | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RKF | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RKG | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RKH | Illinois | Blue-Cross Blue-Shield of Illinois |
| RKI | California | Anthem Blue-Cross |
| RKJ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RKK | - | Unallocated/Not Assigned |
| RKL | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RKM | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RKN | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| RKO | - | Unallocated/Not Assigned |
| RKP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RKQ | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| RKR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RKS | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| RKT | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RKU | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RKV | - | Unallocated/Not Assigned |
| RKW | - | Unallocated/Not Assigned |
| RKX | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RKY | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RKZ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RLA | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RLB | - | Unallocated/Not Assigned |
| RLC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RLD | Illinois | Blue-Cross Blue-Shield of Illinois |
| RLE | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| RLF | Arkansas | Arkansas Blue-Cross Blue-Shield |
| RLG | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RLH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RLI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RLJ | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| RLK | Illinois | Blue-Cross Blue-Shield of Illinois |
| RLL | Nevada | Anthem Blue-Cross Blue-Shield of Nevada |
| RLM | - | Unallocated/Not Assigned |
| RLN | Illinois | Blue-Cross Blue-Shield of Illinois |
| RLO | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| RLP | Michigan | Blue-Cross Blue-Shield of Michigan |
| RLQ | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| RLR | - | Unallocated/Not Assigned |
| RLS | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| RLT | Rhode Island | Blue-Cross Blue-Shield of Rhode Island |
| RLU | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RLV | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RLW | New York | Empire Blue-Cross Blue-Shield of New York |
| RLX | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RLY | California | Blue-Shield of California |
| RLZ | Illinois | Blue-Cross Blue-Shield of Illinois |
| RMA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RMB | - | Unallocated/Not Assigned |
| RMC | New York | Excellus Blue-Cross Blue-Shield of New York |
| RMD | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| RME | Maine | Anthem Blue-Cross Blue-Shield of Maine |
| RMF | Michigan | Blue-Cross Blue-Shield of Michigan |
| RMG | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| RMH | Michigan | Blue-Cross Blue-Shield of Michigan |
| RMI | Idaho | Blue-Cross of Idaho |
| RMJ | - | Unallocated/Not Assigned |
| RMK | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| RML | Illinois | Blue-Cross Blue-Shield of Illinois |
| RMM | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| RMN | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RMO | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RMP | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RMQ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| RMR | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| RMS | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| RMT | - | Unallocated/Not Assigned |
| RMU | - | Unallocated/Not Assigned |
| RMV | Michigan | Blue-Cross Blue-Shield of Michigan |
| RMW | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| RMX | California | Blue-Shield of California |
| RMY | - | Unallocated/Not Assigned |
| RMZ | - | Unallocated/Not Assigned |
| RNA | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| RNB | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| RNC | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RND | Illinois | Blue-Cross Blue-Shield of Illinois |
| RNE | California | Anthem Blue-Cross |
| RNF | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| RNG | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RNH | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RNI | California | Anthem Blue-Cross |
| RNJ | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RNK | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RNL | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| RNM | Florida | Florida-Blue |
| RNN | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| RNO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RNP | Illinois | Blue-Cross Blue-Shield of Illinois |
| RNQ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RNR | - | Unallocated/Not Assigned |
| RNS | - | Unallocated/Not Assigned |
| RNT | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RNU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| RNV | New York (Northeastern) | Blue-Shield of Northeastern New York |
| RNW | California | Anthem Blue-Cross |
| RNX | - | Unallocated/Not Assigned |
| RNY | Nebraska | Blue-Cross Blue-Shield of Nebraska |
| RNZ | - | Unallocated/Not Assigned |
| ROA | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| ROB | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| ROC | - | Unallocated/Not Assigned |
| ROD | - | Unallocated/Not Assigned |
| ROE | - | Unallocated/Not Assigned |
| ROF | Illinois | Blue-Cross Blue-Shield of Illinois |
| ROG | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| ROH | - | Unallocated/Not Assigned |
| ROI | - | Unallocated/Not Assigned |
| ROJ | - | Unallocated/Not Assigned |
| ROK | New York (Northeastern) | Blue-Shield of Northeastern New York |
| ROL | - | Unallocated/Not Assigned |
| ROM | - | Unallocated/Not Assigned |
| RON | California | Blue-Shield of California |
| ROO | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| ROP | California | Blue-Shield of California |
| ROQ | - | Unallocated/Not Assigned |
| ROR | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| ROS | Alabama | Blue-Cross Blue-Shield of Alabama |
| ROT | - | Unallocated/Not Assigned |
| ROU | Michigan | Blue-Cross Blue-Shield of Michigan |
| ROV | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| ROW | - | Unallocated/Not Assigned |
| ROX | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| ROY | Florida | Florida-Blue |
| ROZ | Colorado | Anthem Blue-Cross Blue-Shield of Colorado |
| RPA | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| RPB | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| RPC | Michigan | Blue-Cross Blue-Shield of Michigan |
| RPD | California | Blue-Shield of California |
| RPE | - | Unallocated/Not Assigned |
| RPF | - | Unallocated/Not Assigned |
| RPG | - | Unallocated/Not Assigned |
| RPH | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RPI | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RPJ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RPK | - | Unallocated/Not Assigned |
| RPL | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RPM | - | Unallocated/Not Assigned |
| RPN | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| RPO | California | Blue-Shield of California |
| RPP | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RPQ | California | Blue-Shield of California |
| RPR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RPS | - | Unallocated/Not Assigned |
| RPT | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RPU | - | Unallocated/Not Assigned |
| RPV | New York | Empire Blue-Cross Blue-Shield of New York |
| RPW | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| RPX | Illinois | Blue-Cross Blue-Shield of Illinois |
| RPY | Arkansas | Arkansas Blue-Cross Blue-Shield |
| RPZ | Louisiana | Blue-Cross Blue-Shield of Louisiana |
| RQA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RQB | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RQC | Illinois | Blue-Cross Blue-Shield of Illinois |
| RQD | - | Unallocated/Not Assigned |
| RQE | - | Unallocated/Not Assigned |
| RQF | Michigan | Blue-Cross Blue-Shield of Michigan |
| RQG | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RQH | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RQI | Alabama | Blue-Cross Blue-Shield of Alabama |
| RQJ | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RQK | - | Unallocated/Not Assigned |
| RQL | - | Unallocated/Not Assigned |
| RQM | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RQN | - | Unallocated/Not Assigned |
| RQO | Michigan | Blue-Cross Blue-Shield of Michigan |
| RQP | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RQQ | - | Unallocated/Not Assigned |
| RQR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RQS | Idaho | Blue-Cross of Idaho |
| RQT | - | Unallocated/Not Assigned |
| RQU | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RQV | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RQW | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RQX | Michigan | Blue-Cross Blue-Shield of Michigan |
| RQY | Michigan | Blue-Cross Blue-Shield of Michigan |
| RQZ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| RRA | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RRB | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| RRC | Alabama | Blue-Cross Blue-Shield of Alabama |
| RRD | - | Unallocated/Not Assigned |
| RRE | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RRF | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RRG | - | Unallocated/Not Assigned |
| RRH | - | Unallocated/Not Assigned |
| RRI | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RRJ | Illinois | Blue-Cross Blue-Shield of Illinois |
| RRK | Kansas City | Blue-Cross Blue-Shield of Kansas City |
| RRL | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| RRM | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RRN | Alabama | Blue-Cross Blue-Shield of Alabama |
| RRO | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RRP | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| RRQ | - | Unallocated/Not Assigned |
| RRR | - | Unallocated/Not Assigned |
| RRS | Illinois | Blue-Cross Blue-Shield of Illinois |
| RRT | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| RRU | - | Unallocated/Not Assigned |
| RRV | California | Anthem Blue-Cross |
| RRW | Alabama | Blue-Cross Blue-Shield of Alabama |
| RRX | Florida | Florida Explore-My-Plan |
| RRY | Texas | Blue-Cross Blue-Shield of Texas |
| RRZ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RSA | - | Unallocated/Not Assigned |
| RSB | California | Anthem Blue-Cross |
| RSC | - | Unallocated/Not Assigned |
| RSD | Vermont | Blue-Cross Blue-Shield of Vermont |
| RSE | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| RSF | - | Unallocated/Not Assigned |
| RSG | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RSH | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RSI | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RSJ | - | Unallocated/Not Assigned |
| RSK | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| RSL | - | Unallocated/Not Assigned |
| RSM | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| RSN | Illinois | Blue-Cross Blue-Shield of Illinois |
| RSO | California | Blue-Shield of California |
| RSP | - | Unallocated/Not Assigned |
| RSQ | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RSR | Illinois | Blue-Cross Blue-Shield of Illinois |
| RSS | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RST | Pennsylvania | Capital Blue-Cross of Pennsylvania |
| RSU | Alabama | Blue-Cross Blue-Shield of Alabama |
| RSV | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RSW | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RSX | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RSY | California | Anthem Blue-Cross |
| RSZ | Alabama | Blue-Cross Blue-Shield of Alabama |
| RTA | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| RTB | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RTC | Florida | Florida-Blue |
| RTD | Wisconsin | Anthem Blue-Cross Blue-Shield of Wisconsin |
| RTE | North Carolina | Blue-Cross Blue-Shield of North Carolina |
| RTF | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RTG | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RTH | Michigan | Blue-Cross Blue-Shield of Michigan |
| RTI | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RTJ | - | Unallocated/Not Assigned |
| RTK | Florida | Florida-Blue |
| RTL | Florida | Florida-Blue |
| RTM | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| RTN | - | Unallocated/Not Assigned |
| RTO | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RTP | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| RTQ | - | Unallocated/Not Assigned |
| RTR | - | Unallocated/Not Assigned |
| RTS | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RTT | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| RTU | Alabama | Blue-Cross Blue-Shield of Alabama |
| RTV | - | Unallocated/Not Assigned |
| RTW | Georgia | Anthem Blue-Cross Blue-Shield of Georgia |
| RTX | - | Unallocated/Not Assigned |
| RTY | - | Unallocated/Not Assigned |
| RTZ | - | Unallocated/Not Assigned |
| RUA | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RUB | Texas | Blue-Cross Blue-Shield of Texas |
| RUC | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| RUD | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RUE | Alabama | Blue-Cross Blue-Shield of Alabama |
| RUF | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RUG | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RUH | - | Unallocated/Not Assigned |
| RUI | - | Unallocated/Not Assigned |
| RUJ | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| RUK | - | Unallocated/Not Assigned |
| RUL | - | Unallocated/Not Assigned |
| RUM | Texas | Blue-Cross Blue-Shield of Texas |
| RUN | - | Unallocated/Not Assigned |
| RUO | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RUP | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RUQ | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RUR | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RUS | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RUT | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RUU | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| RUV | Illinois | Blue-Cross Blue-Shield of Illinois |
| RUW | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RUX | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| RUY | - | Unallocated/Not Assigned |
| RUZ | - | Unallocated/Not Assigned |
| RVA | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RVB | South Carolina | Blue-Cross Blue-Shield of South Carolina |
| RVC | Illinois | Blue-Cross Blue-Shield of Illinois |
| RVD | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RVE | - | Unallocated/Not Assigned |
| RVF | Alabama | Blue-Cross Blue-Shield of Alabama |
| RVG | - | Unallocated/Not Assigned |
| RVH | - | Unallocated/Not Assigned |
| RVI | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RVJ | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RVK | - | Unallocated/Not Assigned |
| RVL | - | Unallocated/Not Assigned |
| RVM | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RVN | - | Unallocated/Not Assigned |
| RVO | California | Blue-Shield of California |
| RVP | California | Anthem Blue-Cross |
| RVQ | California | Anthem Blue-Cross |
| RVR | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| RVS | California | Anthem Blue-Cross |
| RVT | New York | Empire Blue-Cross Blue-Shield of New York |
| RVU | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RVV | - | Unallocated/Not Assigned |
| RVW | - | Unallocated/Not Assigned |
| RVX | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| RVY | California | Anthem Blue-Cross |
| RVZ | New York | Empire Blue-Cross Blue-Shield of New York |
| RWA | Texas | Blue-Cross Blue-Shield of Texas |
| RWB | New York | Empire Blue-Cross Blue-Shield of New York |
| RWC | - | Unallocated/Not Assigned |
| RWD | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RWE | - | Unallocated/Not Assigned |
| RWF | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| RWG | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| RWH | - | Unallocated/Not Assigned |
| RWI | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RWJ | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| RWK | Maryland/District of Columbia/Northern Virginia | Carefirst Blue-Cross Blue-Shield |
| RWL | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RWM | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RWN | - | Unallocated/Not Assigned |
| RWO | Pennsylvania | Highmark Blue-Cross Blue-Shield of Pennsylvania |
| RWP | California | Anthem Blue-Cross |
| RWQ | - | Unallocated/Not Assigned |
| RWR | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RWS | Minnesota | Blue-Cross Blue-Shield of Minnesota |
| RWT | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| RWU | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| RWV | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |
| RWW | - | Unallocated/Not Assigned |
| RWX | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RWY | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RWZ | Kentucky | Anthem Blue-Cross Blue-Shield of Kentucky |
| RXA | Texas | Blue-Cross Blue-Shield of Texas |
| RXB | Texas | Blue-Cross Blue-Shield of Texas |
| RXC | Texas | Blue-Cross Blue-Shield of Texas |
| RXD | Texas | Blue-Cross Blue-Shield of Texas |
| RXE | Illinois | Blue-Cross Blue-Shield of Illinois |
| RXF | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| RXG | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| RXH | - | Unallocated/Not Assigned |
| RXI | Alabama | Blue-Cross Blue-Shield of Alabama |
| RXJ | New York | Empire Blue-Cross Blue-Shield of New York |
| RXK | Illinois | Blue-Cross Blue-Shield of Illinois |
| RXL | - | Unallocated/Not Assigned |
| RXM | - | Unallocated/Not Assigned |
| RXN | Texas | Blue-Cross Blue-Shield of Texas |
| RXO | California | Anthem Blue-Cross |
| RXP | - | Unallocated/Not Assigned |
| RXQ | - | Unallocated/Not Assigned |
| RXR | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RXS | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RXT | Michigan | Blue-Cross Blue-Shield of Michigan |
| RXU | - | Unallocated/Not Assigned |
| RXV | - | Unallocated/Not Assigned |
| RXW | - | Unallocated/Not Assigned |
| RXX | Illinois | Blue-Cross Blue-Shield of Illinois |
| RXY | - | Unallocated/Not Assigned |
| RXZ | Massachusetts | Blue-Cross Blue-Shield of Massachusetts |
| RYA | - | Unallocated/Not Assigned |
| RYB | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RYC | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RYD | Illinois | Blue-Cross Blue-Shield of Illinois |
| RYE | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| RYF | Illinois | Blue-Cross Blue-Shield of Illinois |
| RYG | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RYH | - | Unallocated/Not Assigned |
| RYI | Oregon/Idaho/Utah/Washington | Regence Blue-Cross Blue-Shield |
| RYJ | New Jersey | Horizon Blue-Cross Blue-Shield of New Jersey |
| RYK | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RYL | Virginia | Anthem Blue-Cross Blue-Shield of Virginia |
| RYM | - | Unallocated/Not Assigned |
| RYN | - | Unallocated/Not Assigned |
| RYO | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RYP | - | Unallocated/Not Assigned |
| RYQ | Florida | Florida-Blue |
| RYR | Michigan | Blue-Cross Blue-Shield of Michigan |
| RYS | - | Unallocated/Not Assigned |
| RYT | California | Blue-Shield of California |
| RYU | Alabama | Blue-Cross Blue-Shield of Alabama |
| RYV | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| RYW | - | Unallocated/Not Assigned |
| RYX | - | Unallocated/Not Assigned |
| RYY | - | Unallocated/Not Assigned |
| RYZ | - | Unallocated/Not Assigned |
| RZA | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RZB | Illinois | Blue-Cross Blue-Shield of Illinois |
| RZC | - | Unallocated/Not Assigned |
| RZD | Texas | Blue-Cross Blue-Shield of Texas |
| RZE | Illinois | Blue-Cross Blue-Shield of Illinois |
| RZF | Indiana | Anthem Blue-Cross Blue-Shield of Indiana |
| RZG | Alaska | Premera Blue-Cross Blue-Shield of Alaska |
| RZH | South Dakota/Iowa | Wellmark Blue-Cross Blue-Shield |
| RZI | Michigan | Blue-Cross Blue-Shield of Michigan |
| RZJ | - | Unallocated/Not Assigned |
| RZK | Illinois | Blue-Cross Blue-Shield of Illinois |
| RZL | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RZM | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| RZN | Tennessee | Blue-Cross Blue-Shield of Tennessee |
| RZO | California | Blue-Shield of California |
| RZP | Alabama | Blue-Cross Blue-Shield of Alabama |
| RZQ | - | Unallocated/Not Assigned |
| RZR | Pennsylvania | Independence Blue-Cross of Philadelphia and Southeastern Pennsylvania |
| RZS | - | Unallocated/Not Assigned |
| RZT | Connecticut | Anthem Blue-Cross Blue-Shield of Connecticut |
| RZU | Illinois | Blue-Cross Blue-Shield of Illinois |
| RZV | Ohio | Anthem Blue-Cross Blue-Shield of Ohio |
| RZW | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RZX | - | Unallocated/Not Assigned |
| RZY | New York (Western) | Blue-Cross Blue-Shield of Western New York |
| RZZ | Missouri | Anthem Blue-Cross Blue-Shield of Missouri |