UnitedHealth Group Inc. (NYSE: UNH) has won a court fight over its multibillion-dollar deal to buy Change Healthcare Inc., as a judge rejected a challenge to the deal from the U.S. Department of Justice.
U.S. District Judge Carl Nichols issued a brief ruling approving the merger and directing the companies to proceed with a planned sale of Change Healthcare’s claims-editing business to an affiliate of TPG Capital for $2.2 billion. That divestiture, announced in April, was part of the companies'…