Request a Redetermination

The first level of appeal is the redetermination and is carried out by the MAC.

• Time limit to initiate = 120 days from date of receipt of the initial determination notice
• Time limit to complete the review = 60 days
• Amount in controversy = no minimum amount

Redeterminations may be submitted electronically or in writing.

Submit Your Redetermination Request

RECOMMENDED - Use NGSConnex

You can submit your redetermination requests using our free, secure internet portal, NGSConnex. 

If you are an existing NGSConnex user, you can initiate a redetermination by completing the following steps:

1. Click the My Claims tab
2. If there is more than one provider account, click the Select button for that account
3. Select Claims under the Claim Type drop down and click the Go button
4. Enter the Beneficiary Medicare Number, Beneficiary Last Name, Beneficiary First Name (at least the first initial), Beneficiary Date of Birth (Format: MMDDYYYY or MM/DD/YYYY)
   • You can narrow your search by entering from service date, to service date, and/or a claim number if you wish
5. Click the Load Claims button
6. Locate the claim you wish to initiate a redetermination for and click on the Claim Number
7. Click the Initiate Redetermination/Reopening button
8. Complete the redetermination form; all fields with red asterisk are required
9. Click the OK button
   • If the form continues to display on your screen, scroll to the top of the form to locate your error message, correct the error and click on the OK button again
   • If you see an error message, make sure that all required fields are completed
   • If after clicking on the OK button, the form disappears and the My Redeterminations/Reopenings tab displays, the request was received
10. If supporting documentation needs to be included with the redetermination, click on the New button under the attachment section to add the documentation
    • Note: There are no file size limitations to the attachments that can be submitted in NGSConnex; the only file types not accepted are: .xml, .log, and .cfg.

Please Note: If there are multiple services on the same claim in question (same ICN), you only need to submit a single redetermination/reopening request. You should not submit multiple redetermination/reopening requests for the same claim.

By Mail

To request an appeal in writing, complete the Part A Redetermination Request Form – Level 1 and return to the appropriate National Government Services appeals mailing address.

Mailing Address for states AK, AZ, CA, HI, ID, MI, MN, NJ, NV, NY, OR, WA, WI, & U.S. Territories:

National Government Services, Inc.
Appeals Department
P.O. Box 6474 
Indianapolis, IN 46206-6474

Mailing Address for states CT, MA, ME, NH, RI, VT:

National Government Services, Inc.
Appeals Department
P.O. Box 7111
Indianapolis, IN 46207-7111

Please share your thoughts about your experience with our redetermination process.