upcoding
n.— «For years, HCA and its predecessors, including a smaller hospital firm also founded by the Frists, had rigged Medicare billing systems to charge the federal government far more than was justified for treating ordinary ailments, a practice known as “upcoding.”» —“Frist Things First” by Robert Dreyfuss American Prospect Sept. 28, 2005. (source: Double-Tongued Dictionary)