Medicare Premium Overpayment Refund - Assistance Guide


Medicare Premium Overpayment refund is the excessive amount deducted from the Social Security benefits of an individual. An overpayment is the amount paid by the Centers for Medicare and Medicaid Services to a provider. The payment exceeds the amount due and payable under rules and regulations. The CMS is entitled to recover the overpayments and refund the same to an individual Social Security Account.

Contact About Overpayments


inquiries Regarding Refunds to Medicare


(866) 518-3285
7:00 a.m. to 5:00 p.m. CT and (8:00 a.m. to 5:00 p.m. ET) Monday to Friday.

inquiries Regarding Overpayments Not Associated with MSP


(866) 518-3285
7:00 a.m. to 5:00 p.m. CT and (8:00 a.m. to 5:00 p.m. ET) Monday to Friday.

Reasons for Medicare Overpayments

  • Incorrect coding of payment
  • Insufficient documentation required for payment
  • Medical necessity errors
  • Processing and administrative errors

Medicare Premium Overpayment Refund Form


Get the Refund Form for submitting Medicare overpayment refunds. Overpayment Refund form is used by providers to submit Medicare payment refunds voluntary. Complete the form and send at the registered mailing addresses.

Mailing Address for Medicare Overpayment Refund Checks


CGS - J15 Part B Kentucky


PO Box 957065, St. Louis, MO 63195-7065

CGS - J15 Part B Ohio


PO Box 957352, St. Louis, MO 63195-7352
1.866.276.9558

Medicare Premium Overpayment Refund Collection Process

The overpayment refund collection process in initiated when a provider receives overpayment of $25 or more. The process of collection starts by sending a Demand Letter. The Demand Letter includes the following clauses:
  • Details of an overpayment that was made
  • Process under which the overpayment was calculated
  • Name and MBI of patient involved
  • Dates and types of services overpaid
  • Interest to be paid if the payment isn't repaid in full within 30 days
  • Extended repayment schedule (ERS)

Medicare Overpayment Refund Notification Form


Get the PDF fie of the Medicare Overpayment Refund Notification Form. Overpayment refund notification form is used to report an overpayment and send a refund to Medicare.