(KFF Health News) – The Justice Department’s years-long court battle to force UnitedHealth Group to return billions of dollars in alleged Medicare Advantage overpayments hit a major setback Monday when a special master ruled the government had failed to prove its case.

In finding for UnitedHealth, Special Master Suzanne Segal found that the DOJ had not presented evidence to support its claim that the giant health insurer exaggerated how sick patients were to illegally pocket more than $2 billion in overpayments. (Read More)