Submitting the CMS-838

20.1 - Submitting the CMS-838 (Rev. 99, Issued: 06-30-06; Effective/Implementation Dates: 10-02-06) Submit a completed CMS-838 to your fiscal intermediary (FI) within 30 days after the close of each calendar quarter. Include in the report all Medicare credit balances shown in your accounting records (including transfer, holding or other general accounts used to accumulate credit balance funds) as of the last day of the reporting quarter. Report all Medicare credit balances shown in your records regardless of when they occurred. You are responsible for reporting and repaying all improper or excess payments you have received from the time you began participating in the Medicare program. Once you identify and report a credit balance on the CMS-838 report, do not report the same credit balance on subsequent CMS-838 reports.