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Credit Balance Report (Form CMS-838)

A Medicare credit balance is an amount determined to be refundable to the Medicare program for an improper or excess payment made to a provider because of patient billing or claims processing errors. Each provider must submit a quarterly Credit Balance Report (Form CMS-838)External PDF. If your facility has more than one provider number, a separate report should be submitted for each provider number. If you fail to submit a Credit Balance (CMS-838) form and/or certification page with all provider numbers identified, Medicare payments will be suspended as stated in 42 CFR 413.20(e) and 405.370.

Providers with low Medicare utilization, as specified in the Provider Reimbursement Manual, CMS Pub. 15-1External Website, Chapter 24, §2414.4 B, or who file less than twenty-five Medicare claims per year, do not have to submit Form CMS 838. Providers that qualify should submit one, signed and dated certification page and a letter indicating that they are a low Medicare utilization provider.

The following provides the reporting periods and associated due dates.

Quarterly Reporting Period Due By
Jan. 1 – March 31 April 30
April 1 – June 30 July 30
July 1 – Sept. 30 Oct. 30
Oct. 1 – Dec. 31 Jan. 30

To ensure timely receipt and processing, send the CMS-838/Certification within 30 days of the quarter end date using one of the options below:

  • myCGS, secure Web Portal:
Refer to the myCGS User Guide, "Chapter 7: Forms TabPDF" for details.
  • Reports may be faxed to:
1.615.664.5987
MCBR Receipts
Attn: Credit Balance Reporting
  • Regular and Certified Mail:
CGS
Attn: HHH Credit Balance Reporting
P.O. Box 20014
Nashville, TN 37202
  • Fed Ex/UPS/Overnight Courier:
CGS
J15 Credit Balance Reporting
2 Vantage Way
Nashville, TN 37228

Additional Resources

Updated: 10.18.16


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