UnitedHealth Group has confirmed that it is under both civil and criminal investigations by the Department of Justice (DOJ) regarding its Medicare billing practices. The company has indicated that it is fully cooperating with the federal probe, which has led to a decline in its stock price as investors react to the news. The investigations center on allegations of Medicare fraud, with the DOJ focusing on the company’s billing procedures. Despite the scrutiny, UnitedHealth maintains that it is compliant with the DOJ’s requests. The unfolding situation has raised concerns about regulatory risks and market volatility for the healthcare giant.