Overpayment Forms & Tools
- Offset Request Form

- Overpayment Recovery Request Form

- Voluntary Overpayment Refund Form

- Overpayment Interest Calculator
You can also use the myCGS Web Portal to submit offset and overpayment request forms.
When sending in checks to CGS, use the address below to prevent possible delays in processing claims-related payments:
CGS, LLC
DME MAC Jurisdiction C
P.O. Box 955152
St. Louis, MO 63195-5152
Debt Collections
If CGS has not received requested payments by 120 days after the initial demand letter the debt will then be referred to the Department of Treasury.
Appeals
- If you do not agree with an overpayment, our Appeals section for additional information.
Bankruptcy
- Filed bankruptcy and need to notify CGS? Send a copy of the bankruptcy notification given by the courts to the address below:
CGS
PO Box 20010
Nashville, TN 37202-0010
Fraud
- CoventBridge Group – UPIC Midwestern (Unified Program Integrity Contractor) for IA, IL, IN, KS, KY, MI, MN, MO, NE, OH, & WI

- Qlarant – UPIC Southwest (Unified Program Integrity Contractor) for AR, CO, LA, MS, NM, OK, & TX

- Safeguard Services, LLC – UPIC Southeast (Unified Program Integrity Contractor) for AL, FL, GA, NC, PR, SC, TN, VA, VI, & WV

Location Change
- Was there a change in company location? The National Provider Enrollment contractors issue Medicare billing privileges to suppliers of durable medical equipment, prosthetics, orthotics, and supplies (DMEPOS), and also maintain supplier files that contain information collected via the CMS 855S enrollment form
.
Accelerated & Advance Payments
When suppliers have financial difficulty due to delayed Medicare payment for services provided, they may qualify for accelerated or advance payments.
- Make sure you meet all requirements outlined in the accelerated or advance payments article.
- Complete the Accelerated or Advance Payment Request Form
, which must be certified by the supplier’s CEO or CFO.
Updated: 04.13.2026

