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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549
 Form 10-K/A x
    
    AMENDMENT NO. 1 TO ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934o
    
    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934
 For the fiscal year ended December 31, 2003 Commission File Number 000-29273 Quovadx, Inc. (Exact name of registrant as specified in its charter)
 Delaware(State or other jurisdiction of
incorporation or organization)
    
    85-0373486(I.R.S. Employer
Identification No.)6400 S. Fiddlers Green Circle, Suite 1000
Englewood, Colorado(Address of principal executive offices)
    
    80111(Zip Code)
 Registrants telephone number, including area code:
(303) 488-2019 Securities Registered Pursuant to Section 12(b) of the Act:
None Securities Registered Pursuant to Section 12(g) of the Act: Title of each class
    
    Name of each exchange on which registeredCommon Stock, par value $0.01 per share
    
    NASDAQ
 Indicate by check mark whether the Registrant (1) has filed all reports
required to be filed by Section 13 or 15(d) of the Securities and Exchange Act
of 1934 during the preceding 12 months (or for such shorter period that the
registrant was required to file such reports), and (2) has been subject to such
filings for the past 90 days. Yes x No o Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to
the best of the registrants knowledge, in definitive proxy or information
statements incorporated by reference in Part III of this Form 10-K or any
amendment to this Form 10-K. x Indicate by check mark whether the registrant is an accelerated filer (as
defined in Rule 12b-2 of the Act). Yes x No o The aggregate market value of the voting and non-voting equity held by
non-affiliates of the registrant as of June 30, 2003 was $81.5 million, based
on the last sale price reported for such date on the Nasdaq National Market.
This determination is not necessarily conclusive for other purposes. As of March 12, 2004, there were 39,446,873 shares of Common Stock of the
registrant outstanding. DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrants definitive proxy statement, to be delivered
to stockholders in connection with the Registrants 2004 Annual Meeting of
Stockholders, are incorporated by reference into Part III of this Form 10-K.




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TABLE OF CONTENTS  EXPLANATORY NOTESIGNATURESINDEX TO EXHIBITSCertification of Chief Executive OfficerCertification of Chief Financial OfficerCertification of Chief Executive OfficerCertification of Chief Financial Officer    Table of Contents  
 EXPLANATORY NOTE This
Amendment No. 1 to Quovadx, Inc.s Annual Report on Form
10-K for the fiscal year ended December 31, 2003 is being filed solely for the purpose of correcting
certain errors in Exhibits 31.1, 31.2, 32.1 and 32.2 to such Form 10-K filed
electronically with the U.S. Securities and Exchange Commission on
March 18,
2004. These exhibits erroneously referred to the report being filed as a
Quarterly Report on Form 10-Q instead of an Annual Report on Form 10-K. No
other changes are being made by means of this filing. 
 SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Exchange Act,
the registrant caused this report to be signed on its behalf by the undersigned
thereunto duly authorized, in the City of Englewood, State of Colorado, on this
18th day of March 2004. QUOVADX, INC.By:
    /s/ Lorine R. SweeneyLorine R. SweeneyPresident and Chief Executive Officer Pursuant to the requirements of the Exchange Act, this report has been
signed by the following persons in the capacities and on the dates indicated. Signatures
    
    Title
    
    Date/s/ Lorine R. Sweeney
Lorine R. Sweeney
    
    Director, President and Chief
Executive Officer (Principal
Executive Officer)
    
    March 18, 2004/s/ Gary T. Scherping
Gary T. Scherping
    
    Executive Vice President and Chief
Financial Officer (Principal
Financial and Accounting Officer)
Chairman of the Board
    
    March 18, 2004*
Jeffrey M. Krauss*
Fred L. Brown
    
    Director*
J. Andrew Cowherd
    
    Director*
James B. Hoover
    
    Director*
Charles J. Roesslein
    
    Director*
James A. Gilbert
    
    Director*By:
    
    /s/ Gary T. Scherping
Attorney-in-fact




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INDEX TO EXHIBITS

|        |        |                         |  |                                                                                                                                                                                                              
|------- | ------ | ----------------------- |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit |        |                        
|Number  |        | Description of Document
|        |        |                        
|        | 31.1   |                         |  | Certification of Chief Executive Officer of the
    Registrant pursuant to Rule 13a-14(a) and
    Rule 15d-14(a), promulgated under the Securities Exchange
    Act of 1934, as amended.                     
|        | 31.2   |                         |  | Certification of Chief Financial Officer of the
    Registrant pursuant to Rule 13a-14(a) and
    Rule 15d-14(a), promulgated under the Securities Exchange
    Act of 1934, as amended.                     
|        | 32.1** |                         |  | Certification of Chief Executive Officer of the
    Registrant pursuant to Rule 13a-14(b) and
    Rule 15d-14(b), promulgated under the Securities Exchange
    Act of 1934, as amended, and 18 U.S.C. §1350.
|        | 32.2** |                         |  | Certification of Chief Financial Officer of the
    Registrant pursuant to Rule 13a-14(b) and
    Rule 15d-14(b), promulgated under the Securities Exchange
    Act of 1934, as amended, and 18 U.S.C. §1350.



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|  |                                                                           
|- | --------------------------------------------------------------------------
|* | Constitutes a management contract or compensatory
    plan or arrangement.



|   |                                                                                                                                                                                                                                                                                                                                                
|-- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|** | This certification is furnished to, but not
    filed, with the Commission. This certification shall not be
    deemed to be incorporated by reference into any filing under the
    Securities Act of 1933 or the Securities Exchange Act of 1934,
    except to the extent that the Registrant specifically
    incorporates it by reference.