Exhibit 21.1

SUBSIDIARIES OF THE REGISTRANT

The following lists the subsidiaries of WebMD Corporation:

Name	Jurisdiction of Incorporation
WebMD Corporation		Delaware
225 Summit Associates LLC		Delaware
CLD Corporation		Delaware
Envoy Corporation		Delaware
Advanced Business Fulfillment, LLC		Delaware
CareInsite LLC		Massachusetts
THINC, LLC		New York
THINC Acquisition Corp.		Delaware
Claims Processing Service, Inc.		Connecticut
Dakota Imaging, Inc.		Maryland
Dakota Imaging, S.A.		Costa Rica
Envoy/ExpressBill, Inc.		Tennessee
Kinetra LLC		Delaware
IMS – Net of Arkansas, Inc.		Arkansas
IMS – Net of Central Florida, Inc.		Colorado
IMS – Net of Colorado, Inc.		Colorado
IMS – Net of Illinois, Inc.		Illinois
Illinois Medical Information Network, Inc.		Illinois
Minnesota Medical Communication Network, LLC		Colorado
MediFAX-EDI Holding Company		Delaware
MediFAX-EDI LLC		Tennessee
Medi, Inc.		California
MediFAX, Inc.		Tennessee
MedWare Solutions, Inc.		Florida
MediFAX-EDI Holdings, Inc.		Delaware
MediFAX-EDI Services, Inc.		Delaware
ViPS, Inc.		Maryland
ViPS BioMedical Services, Inc.		Pennsylvania
WebMD Clinical Services, LLC		Delaware
Healtheon Software India Pvt. Ltd.		India
Healtheon/WebMD Cable Corporation		Delaware
Healtheon/WebMD Internet Corporation		Delaware
HW International Holdings, Inc.		Delaware
WebMD International, LLC		Delaware
WebMD Canada Ventures, Inc.		Canada
WebMD UK Limited		England and Wales
HW Japan, Inc.		Delaware
MedE America Corporation		Delaware
Healthcare Interchange, Inc.		Missouri
MedE America Corporation of Ohio		Ohio
OnHealth Network Company		Washington
BabyData.com, Inc.		Delaware
Demand Management, Inc.		Colorado
Health Decisions, Inc.		Colorado
Health Decisions International, LLC		Colorado
The Ornish Health Program, Inc.		California
PRX Holdings Corp.		Delaware
SNTC Holding, Inc.		Delaware
Porex Corporation		Delaware
Mupor Limited		England
Porex Technologies GmbH		Germany
Esters Filtertechnik Produktions GmbH		Germany
Porex Products Malaysia SDN, BHD		Malaysia
Porex Surgical Inc.		Delaware
Porex Surgical GmbH		Germany
SYN Healthcare Service, Inc.		California

Name	Jurisdiction of Incorporation
SYNC Corp.		New Jersey
WebMD Domain Corp.		Delaware
WebMD, Inc.		Georgia
Boca Subsidiary Corp.		Delaware
Endeavor Technologies, Inc.		Georgia
HealthShare Technology, Inc.		Delaware
MMM Acquisition Company		Delaware
Medscape Portals, Inc.		Delaware
Medscape LLC		Delaware
MDhub, LLC		Connecticut
MedicineNet, Inc.		California
National Physicians DataSource, LLC		Connecticut
OW Corp		Delaware
Physicians Telephone Directory, Inc.		Connecticut
RxList, Inc.		Delaware
RxList LLC		California
Telemedics, Inc.		Georgia
Wellmed, Inc.		Delaware
WebMD Practice Services, Inc.		Delaware
Adaptive Health Systems of Arizona, Inc.		Arizona
Medical Manager PCN, Inc.		Delaware
Benchmark Systems, Inc. of Louisiana		Louisiana
Medical Manager Research & Development, Inc.		Florida
Peachtree Associates, Inc.		Georgia
Personal Best!, Inc.		North Carolina
United Software Architects, Inc.		Texas