Exhibit 21

SUBSIDIARIES OF THE REGISTRANT

The following are the subsidiaries of WebMD Corporation:

Name					Jurisdiction of Incorporation
WebMD Corporation						Delaware
	CareInsite Corporation					Massachusetts
		Care Acquisition Corp.				Delaware
		CareAgents, Inc.				Delaware
		Med-Link Technologies, Inc.				Delaware
		THINC Acquisition Corp.				Delaware
			THINC, LLC (1%)			New York
		THINC, LLC (99%)				New York
	Envoy Corporation					Delaware
		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
		National Electronic Information Corporation				Delaware
		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
	LaPook Lear Systems, Inc.					New York
	MDNX Acquisition Corp.					Florida
	MedEAmerica Corporation					Delaware
		Healthcare Interchange, Inc.				Missouri
		MedE America Corporation of Ohio				Ohio
	Medical Manager Health Systems, Inc.					Delaware
		Adaptive Health Systems of Arizona, Inc.				Arizona
		Medical Manager PCN, Inc.				Delaware
			Benchmark Systems, Inc. of Louisiana			Louisiana
		Medical Manager R & D				Florida
		Medical Manager Sales & Marketing				California
		Peachtree Associates, Inc.				Georgia
		Preferred System Solutions, Inc.				Oklahoma
		TouchPoint Software Corporation				Delaware
		United Software Architects, Inc.				Texas

OnHealth Network Company				Washington
	BabyData.com, Inc.			Delaware
	Demand Management, Inc.			Colorado
		Health Decisions International, LLC (30%)		Colorado
	Health Decisions, Inc.			Delaware
		Health Decisions International, LLC (70%)		Colorado
The Ornish Health Program, Inc.				California
PRX Holdings Corp.				Delaware
SNTC Holdings, Inc.				Delaware
	Porex Holdings, Inc.			Delaware
		Porex Bio Products, Inc.		Delaware
		Porex Corporation		Delaware
			Mupor Limited	England
			Porex GmbH	Germany
			Porex International, Inc.	Barbados
			Porex Products Malaysia SDN, BHD	Malaysia
			Porex Surgical, Inc.	Delaware
			Porex UK Ltd.	England
		Porex Medical Products, Inc.		California
SYN Healthcare Services, Inc.				California
SYNC Corp.				New Jersey
WebMD Domain Corp.				Delaware
WebMD, Inc.				Georgia
	Endeavor Technologies, Inc.			Georgia
	MMM Acquisition Company			Delaware
		Medscape Portals, Inc.		Delaware
	Telemedics, Inc.			Georgia
	Wellmed, Inc.			Delaware