| AIG | 19402 | workerscomp | UB04 1500 ERA | More Info |
| Air Liquide USA LLC | J1516 | workerscomp | ERA | More Info |
| Aither Health | 64884 | commercial | UB04 1500 ERA | More Info |
| AK Medicaid | AKMCD | medicaid | UB04 1500 ERA Eligibility | More Info |
| AK Medicare Part B | 00831 | medicare | 1500 ERA Eligibility Attachments | More Info |
| AK/OR/ID/WA Medicare Part A | 02001 | medicare | UB04 ERA Eligibility Attachments | More Info |
| AKM Medical Group | CAPMN | commercial | UB04 1500 | More Info |
| AL BCBS | 00510 | bcbs | UB04 1500 ERA Eligibility | More Info |
| AL Medicaid | ALMCD | medicaid | UB04 1500 ERA Eligibility | More Info |
| AL Medicare Part A | 10111 | medicare | UB04 ERA Eligibility Attachments | More Info |
| AL Medicare Part B | 10112 | medicare | 1500 ERA Eligibility Attachments | More Info |
| Alacura Medical Transportation Management LLC | RP065 | commercial | 1500 | More Info |
| Alameda Alliance for Health | 95327 | commercial | UB04 1500 ERA | More Info |
| Alaska Childrens Services Inc | 91136 | commercial | UB04 1500 | More Info |
| Alaska National Insurance | J1577 | workerscomp | UB04 1500 ERA | More Info |
| Albuquerque Public Schools (APS) | 85600 | commercial | UB04 1500 ERA | More Info |
| Alcoa Fasteners Systems | J1244 | workerscomp | 1500 ERA | More Info |
| Alex Lee, Inc. | J2166 | workerscomp | UB04 1500 ERA | More Info |
| ALICARE | 13550 | commercial | UB04 1500 ERA | More Info |
| Align Networks | J1716 | workerscomp | UB04 1500 ERA | More Info |
| Align Senior Care (CA) | ASCA1 | commercial | UB04 1500 ERA | More Info |
| Align Senior Care (FL) | ASFL1 | commercial | UB04 1500 ERA | More Info |
| Align Senior Care (MI) | ASMI1 | commercial | UB04 1500 ERA | More Info |
| Align Senior Care (VA) | ASVA1 | commercial | UB04 1500 ERA | More Info |
| Alignment Healthcare | AHCA1 | | UB04 1500 ERA | More Info |
| Alivi Health | ALIVI | | 1500 | More Info |
| All Care Medical Group | ALLCA | commercial | UB04 1500 ERA | More Info |
| All Savers Insurance/UnitedHealthcare | 81400 | commercial | UB04 1500 ERA Eligibility | More Info |
| Allcare Advantage | MRCHP | commercial | UB04 1500 ERA | More Info |
| Allcare Health Plan | MRIPA | medicaid | UB04 1500 ERA | More Info |
| AllCare IPA | AC101 | commercial | 1500 ERA | More Info |
| Allegiance Benefit Plan Management, Inc. | 81040 | commercial | UB04 1500 ERA Eligibility | More Info |
| Allen Canning | J1740 | workerscomp | UB04 1500 ERA | More Info |
| Allergan W.C. Holding, INC. | J2341 | workerscomp | UB04 1500 ERA | More Info |
| Alliance Behavioral Health | 23071 | | UB04 1500 ERA | More Info |
| Alliance Coal Health Plan | 93658 | commercial | UB04 1500 ERA | More Info |
| Alliance Physicians High Desert | 22417 | commercial | UB04 1500 ERA | More Info |
| Alliant Energy | J1619 | workerscomp | UB04 1500 ERA | More Info |
| Alliant Health Plans of Georgia | 58234 | commercial | UB04 1500 ERA | More Info |
| Allied Benefit Systems | 37308 | commercial | UB04 1500 ERA Eligibility | More Info |
| Allied Claims Administration, Inc. | J1733 | workerscomp | UB04 1500 ERA | More Info |
| Allied Insurance Companies | J1550 | workerscomp | UB04 1500 ERA | More Info |
| ALLINA HEALTH AETNA | 54398 | commercial | UB04 1500 ERA Eligibility | More Info |
| Allmerica Financial Benefits Insurance Company | J1589 | workerscomp | UB04 1500 ERA | More Info |
| Allstate - EXCEPT NEW JERSEY | C1037 | workerscomp | UB04 1500 ERA | More Info |
| Allstate - NJ Only | C1089 | workerscomp | 1500 | More Info |
| AllWays Health Partners | 04293 | commercial | UB04 1500 ERA | More Info |
| AlohaCare | ALOHA | commercial | UB04 1500 ERA | More Info |
| Alpha Care Medical Group | SYMED | commercial | UB04 1500 | More Info |
| Alpha Care Medical Group NMM | NMM04 | commercial | UB04 1500 | More Info |
| Alpha Data | TH085 | commercial | 1500 | More Info |
| AlphaCare Medical Group | MPM32 | | UB04 1500 | More Info |
| Alta Bates Medical Group | A0701 | commercial | UB04 1500 | More Info |
| AltaMed | ALTAM | | UB04 1500 ERA | More Info |
| Alternative Service Concepts (ASC) | J2149 | workerscomp | UB04 1500 ERA | More Info |
| Alterwood Advantage | RP016 | commercial | UB04 1500 | More Info |
| Alvey Systems (AON Risk) | J1025 | workerscomp | UB04 1500 ERA | More Info |
| AMA Insurance | ERA12 | commercial | ERA | More Info |
| Amalgamated Life PA Alicare | 13343 | commercial | UB04 1500 ERA | More Info |
| AmeriBen Solutions Inc | 75137 | commercial | UB04 1500 ERA Eligibility | More Info |
| America First Insurance | J1427 | workerscomp | UB04 1500 ERA | More Info |
| Americaid Community Care Marylan | 27517 | commercial | UB04 1500 ERA | More Info |
| American Airlines - DOI after 9/1/2014 ONLY | J2000 | workerscomp | UB04 1500 ERA | More Info |
| American Apparel, LLC (DOI after 7/14/16) | J2189 | workerscomp | UB04 1500 ERA | More Info |
| American Behavioral | 63103 | commercial | UB04 1500 | More Info |
| American Claims Management (ACM)/ Everest National | J1236 | workerscomp | UB04 1500 ERA | More Info |
| American Coin Merchandising, Inc | J1026 | workerscomp | UB04 1500 ERA | More Info |
| American Country | J1249 | workerscomp | 1500 | More Info |
| American Cyanamid | J1027 | workerscomp | UB04 1500 ERA | More Info |
| American Family Insurance | TH095 | commercial | UB04 1500 | More Info |
| American Family Life Assurance - AFLAC | ERA05 | | ERA | More Info |
| American Family Mutual Insurance Company | C1055 | workerscomp | UB04 1500 ERA | More Info |
| American Family Mutual Insurance Company (WC ONLY) | J2134 | workerscomp | UB04 1500 ERA | More Info |
| American Family PPO Policies Administered by Am Rep | 56071 | commercial | UB04 1500 ERA | More Info |
| American Fidelity Assurance Company | 60801 | commercial | UB04 1500 | More Info |
| American Fire and Casualty | 24074 | workerscomp | UB04 1500 ERA | More Info |
| American General | 62030 | commercial | UB04 1500 ERA | More Info |
| American Health Advantage of Idaho & Utah | 31145 | commercial | UB04 1500 ERA | More Info |
| American Health Advantage of MO | MMS01 | commercial | UB04 1500 ERA | More Info |
| American Health Advantage of MS | 31135 | commercial | UB04 1500 ERA | More Info |
| American Health Advantage of OK | 31125 | commercial | UB04 1500 ERA | More Info |
| American Health Advantage of TN | 31130 | commercial | UB04 1500 ERA | More Info |
| American Health Advantage of TX | 31155 | commercial | UB04 1500 ERA | More Info |
| American Healthcare Alliance | 01066 | commercial | UB04 1500 | More Info |
| American Home Craft | J1250 | workerscomp | UB04 1500 ERA | More Info |
| American Imaging Management Inc | 36369 | commercial | UB04 1500 | More Info |
| American Insurance Administrators AIA | 26119 | medicare | ERA | More Info |
| American LIFECARE | 72099 | commercial | UB04 1500 | More Info |
| American Medical and Life Insurance | 23212 | commercial | UB04 1500 | More Info |
| American National | J2295 | workerscomp | UB04 1500 | More Info |
| American National Ins Co ANICO | 74048 | commercial | UB04 1500 ERA Eligibility | More Info |
| American Postal Workers Union He | 44444 | commercial | UB04 1500 ERA | More Info |
| American Progressive Life and Health | 48055 | commercial | ERA Eligibility | More Info |
| American Republic Insurance | 42011 | commercial | UB04 1500 ERA | More Info |
| American Specialty Companies | J1028 | workerscomp | UB04 1500 ERA | More Info |
| American Specialty Health | ASH01 | commercial | 1500 ERA | More Info |
| American Specialty Ins. / MIB | J1029 | workerscomp | UB04 1500 ERA | More Info |
| American Therapy Administrators | ATHAL | commercial | UB04 1500 | More Info |
| American Whole Health Networks | TH117 | commercial | 1500 | More Info |
| American Worker Health Plan | 37322 | commercial | UB04 1500 ERA | More Info |
