Audit finds state owes feds $4 million for drug rebates Ryan Voyles 5 years ago Illinois owes the federal government over $4 million after it failed to collect rebates for drugs prescribed to Medicaid patients by physicians, according to a federal audit.To access this content, you must purchase 1 Year Health News Illinois Subscription or 1 Year Group Subscription - Up to 5 Users, or log in if you are a member.