The Justice Department is appealing a September ruling that found the government failed to show how an acquisition by UnitedHealth Group would harm competition.
Last month, Minnetonka-based UnitedHealth closed on its $13 billion deal to acquire Change Healthcare, a health care data firm based in Tennessee, following the ruling from U.S. District Court Judge Carl Nichols.
On Friday, the Justice Department said it was appealing to the U.S. Court of Appeals for the District of Columbia Circuit.
