More information on Overpayments can be found in Chapter 9 of the DME MAC A Supplier Manual.

Voluntary Refunds

The Overpayment Refund Form can be found on the CMNs and Forms page. Check the appropriate reason for the voluntary refund being as specific as possible. This form is used:

• To return an unsolicited / voluntary refund with a check. Complete and forward the form with your refund check to:
  
      NHIC, Corp.
      P.O. Box 809252
      Chicago, IL 60680-9252
  
  Note: This P.O. Box is used strictly for the receipt of checks.



• When a supplier discovers an overpayment and is not submitting a refund check. (This includes immediate offset requests for Voluntary Refunds where an Accounts Receivable has not previously been established.) Complete and forward the form to:
  
      Medicare Overpayments
      P.O. Box 9175
      Hingham, MA 02043-9175

Requested Refunds

Immediate Offset Fax Requests

Requests to immediately offset existing Accounts Receivables only may be faxed to 781-741-3916. Include both the demand letter and the Offset Request Form (found on the CMNs and Forms page) when requesting the immediate offset.

Note: In order to ensure that information is kept secured, the hours of operation for the fax are 8:00 a.m. to 4:00 p.m. Monday through Friday EST.