Overly aggressive practices of contractors charged with recovering inappropriate Medicare payments are causing headaches for hospitals and patients, hospital executives told the Senate Finance Committee Tuesday. Recovery Audit Contractors – or RACs – uncover and collect improper payments made to hospitals, physicians, clinics and other providers. In 2011 the audits resulted in the return of nearly a half a billion dollars to the Medicare Trust Fund. "We need to build on this success, but we can't overburden legitimate providers who play by the rules," Finance Committee Chairman Max Baucus, D-Mont., said Tuesday. "We need balance."