RuralServ

Original Medicare First Level of Appeal Tips Sheet for Medicare Providers

If you disagree with Medicare’s claim determination, you may appeal. However, please follow these important tips before you submit a first level of appeal (redetermination) with your MAC, National Government Services.

Appeal Tips

Submit all redetermination requests on time in writing or via electronic portal (NGSConnex) within 120 days of the claim determination date.

  • NGSConnex is the quickest and easiest option to submit a first level appeal.
  • You may choose to use the CMS Redetermination Form and mail with appropriate supporting documentation.
  • Processing time for level one appeals is 60 days; within that timeframe, please do not send or submit via NGSConnex another appeals request to avoid duplicates.
  • Include a POC from within your facility or agency with all appeals; including name, telephone number, and office hours.
  • Verify the denial message on the RA has appeal rights before submitting a request.
  • Include only relevant supporting documents with your request that was not provided for the initial claim determination.
  • Include a copy of the demand letter(s) if you are appealing an overpayment determination.
  • Include a copy of the Appointment of Representative form if an individual from outside your facility or agency is representing the appellant.
  • If the appeal involves an overpayment determined through sampling and extrapolation, identify all contested sample claims in one appeal request and clearly state any sampling methodology challenges.

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Revised 9/21/2023