CMS has scheduled two educational calls on the Recovery Audit Contractor (RAC) program, under which four designated contractors will review all Medicare Part A and B paid claims to identify Medicare overpayments and underpayments. The RACs will be paid a contingency fee based on overpayments and underpayments they find. The first call on April 8, 2009 is intended for Part A providers, while the second call on April 14 will focus on Part B providers.