Exhibit 10.57

         
 
  (HLTH LOGO) [g17731g1773104.gif]   HLTH Corporation
669 River Drive, Center Two
Elmwood Park, NJ 07407
201.703.3400 Phone
www.hlth.com

February 19, 2009
Anthony Vuolo
c/o WebMD Health Corp.
111 Eighth Avenue
New York, NY 10011
Dear Tony:
     Reference is made to (i) the Amended and Restated Employment Agreement
dated as of July 14, 2005 between you and WebMD Health Corp. (“WebMD”) (as
previously amended, the “Employment Agreement”) and (ii) the grant of a
nonqualified option to purchase 180,000 shares of the Common Stock of HLTH
Corporation (the “Company”) made to you on December 10, 2008 (the “2008 HLTH
Option”) as evidenced by the Option Agreement dated December 10, 2008 (the “HLTH
Option Agreement”).
     Notwithstanding anything to the contrary contained in the HLTH Option
Agreement, in the event of a Change in Control of WebMD or HLTH (as defined in
the Employment Agreement), the 2008 HLTH Option shall be subject to the same
provisions as the option to purchase WebMD common stock granted to you on
December 10, 2008 and described in section 4(g)(i) of the Employment Agreement:
In the event of such a Change in Control, you may resign at any time after the
one year anniversary of such Change in Control and the 2008 HLTH Option shall
continue to vest and remain outstanding through the second anniversary of the
Change in Control and the 90 day post termination exercise period would commence
on the second vesting date, subject to your execution of the acknowledgement
described in Section 5.4 of the Employment Agreement and your continued
compliance with the Trade Secret and Proprietary Information Agreement. In the
event that your employment is terminated without Cause or Good Reason on or
following such a Change in Control, the 2008 HLTH Option shall continue to vest
and remain outstanding through the second anniversary of the Change in Control
and the 90 day post termination exercise period would commence on the second
vesting date, subject to your execution of the acknowledgement described in
Section 5.4 of the Employment Agreement and continued compliance with the Trade
Secret and Proprietary Information Agreement.

 

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Except as set forth herein, the HLTH Option Agreement remains in full force and
effect.

                  HLTH CORPORATION    
 
           
 
  By:        /s/ Anne N. Smith
 
Name: Anne N. Smith
Title: Vice President — Legal    

     
ACKNOWLEDGED AND AGREED
   
 
   
     /s/ Anthony Vuolo
 
ANTHONY VUOLO
   

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