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Exhibit 21.1
 SUBSIDIARIES OF THE REGISTRANT
  Name
    
    JurisdictionEmdeon Corporation
    
    Delaware225 Summit Associates LLC
    
    New JerseyCLD Corporation
    
    DelawareEmdeon Practice Services, Inc.
    
    DelawareAdaptive Health Systems of Arizona, Inc.
    
    ArizonaMedical Manager PCN, Inc.
    
    DelawareBenchmark Systems, Inc. of Louisiana
    
    LouisianaMedical Manager Research & Development, LLC
    
    DelawarePeachtree Associates, Inc.
    
    GeorgiaPersonal Best!, Inc.
    
    North CarolinaUnited Software Architects, Inc.
    
    TexasEnvoy Corporation
    
    DelawareAdvanced Business Fulfillment, LLC
    
    DelawareCareInsite LLC
    
    MassachusettsThe Health Information Network Connection, LLC
    
    New YorkTHINC Acquisition Corp.
    
    DelawareClaims Processing Service, Inc.
    
    ConnecticutDakota Imaging, Inc.
    
    MarylandDakota Imaging, S.A.
    
    Costa RicaENVOY/ExpressBill, Inc.
    
    TennesseeKinetra LLC
    
    DelawareIMS -  Net of Arkansas, Inc. (51%)
    
    ArkansasIMS - Net of Central Florida, Inc.
    
    ColoradoIMS - Net of Colorado, Inc.
    
    ColoradoIMS - Net of Illinois, Inc.
    
    IllinoisIllinois Medical Information Network, Inc.
    
    IllinoisMinnesota Medical Communication Network, LLC (90%)
    
    ColoradoMediFAX-EDI Holding Company
    
    DelawareMediFAX-EDI LLC
    
    TennesseeMedi, Inc.
    
    CaliforniaMediFAX, Inc.
    
    TennesseeMediFAX-EDI Holdings, Inc.
    
    DelawareMediFAX-EDI Services, Inc.
    
    DelawareMedWare Solutions, Inc.
    
    FloridaViPS, Inc.
    
    MarylandViPS BioMedical Services, Inc.
    
    PennsylvaniaWebMD Clinical Services, LLC
    
    DelawareHealtheon International LLC
    
    DelawareWebMD International, LLC
    
    DelawareWebMD Canada Ventures, Inc.
    
    CanadaWebMD UK Limited
    
    England & WalesHealtheon Software India Private Limited
    
    IndiaHLTH Domain Corporation
    
    DelawareMedE America Corporation
    
    DelawareHealthcare Interchange, Inc.
    
    Missouri




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Name
    
    JurisdictionMedE America Corporation of Ohio
    
    OhioPRX Holdings Corp.
    
    DelawareSNTC Holding, Inc.
    
    DelawarePorex Corporation
    
    DelawarePorex Surgical, Inc.
    
    DelawarePorex Surgical GmbH
    
    GermanyPorex Technologies GmbH
    
    GermanyPorex Technologies LTD
    
    EnglandPorex Technologies SDN.BHD
    
    MalaysiaSYN Healthcare Service, Inc.
    
    CaliforniaSYNC Corp.
    
    New JerseyWebMD Health Corp. (85.81%)
    
    DelawareWebMD, Inc.
    
    GeorgiaBoca Subsidiary Corp.
    
    DelawareConceptis, Inc.
    
    DelawareCrescendo Medical Education LLC
    
    DelawareeMedicine.Com, Inc.
    
    DelawareEndeavor Technologies, Inc.
    
    GeorgiaHealtheon/WebMD Cable Corporation
    
    DelawareHealtheon/WebMD Internet Corporation
    
    DelawareHealthShare Technology, Inc.
    
    DelawareHW Japan, Inc.
    
    DelawareMDhub, LLC
    
    ConnecticutMedicineNet, Inc.
    
    CaliforniaMMM Acquisition Company
    
    DelawareMedscape Portals, Inc.
    
    DelawareMedscape LLC
    
    DelawareNational Physicians DataSource, LLC
    
    ConnecticutOnHealth Network Company
    
    WashingtonBabyData.com, Inc.
    
    DelawareDemand Management, Inc.
    
    ColoradoHealth Decisions, Inc.
    
    ColoradoHealth Decisions International, LLC
    
    ColoradoThe Ornish Health Program, Inc.
    
    CaliforniaOW Corp.
    
    DelawarePhysicians Telephone Directory, Inc.
    
    ConnecticutRxList, Inc.
    
    DelawareRxList LLC
    
    CaliforniaTelemedics, Inc.
    
    GeorgiaWebMD Domain Corp.
    
    DelawareWellMed, Inc.
    
    Delaware