
UnitedHealth Group, Inc. (NYSE:UNH) is under renewed legal pressure as shareholders file additional lawsuits, many of which reference a federal investigation into the company's Medicare billing practices reported by the Wall Street Journal in May.

UnitedHealth Group, Inc. (NYSE:UNH) is under renewed legal pressure as shareholders file additional lawsuits, many of which reference a federal investigation into the company's Medicare billing practices reported by the Wall Street Journal in May.