How can I find out why money was taken back?
Providers can locate offset information with the Financial Control Number (FCN) provided to them on their Medicare remittance advice by calling the Interactive Voice Response (IVR) system (1.866.290.4036). Select Option 3 for Financial Information, then selecting option 4 for Offset information. Refer to the CGS J15 Part B IVR User Guide for additional information.