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Medicare ICD-10 Testing Weeks

March 24 Deadline to Volunteer for End-to-End ICD-10 Testing Week

Through March 24, CMS is soliciting volunteers to participate in limited end-to-end ICD-10 testing with Medicare Administrative Contractors, July 21-25. Testing will evaluate the entire claims-submission process, including adjudication information. CMS will choose 32 sample participants for each MAC to represent a broad cross-section of provider claims and submitter types. Participants may send up to 50 test claims over the course of the testing week. To volunteer, use the appropriate form from the MAC list below. CMS will notify selected testers April 14.

Minimum Testing Requirements

To participate in the end-to-end testing, volunteer testers must:

  • Be established electronic submitters with active Medicare submitter IDs, capable of receiving electronic remittance advices (ERAs). Electronic submitters are defined as clearinghouses, billing agencies, or professional or institutional providers who submit directly to Medicare.
  • Be ready to test ICD-10 - i.e., already have updated and internally tested all vendor and practice management software needed for the test .
  • Be able to submit future dated claims.
  • Be able to provide the National Provider Identifiers and beneficiary Health Insurance Claim Numbers they will use for test claims when requested by the MAC. This information will be needed several months prior to the start of testing for set- up purposes
Providers who submit through a clearinghouse will have to work with their clearinghouse to test, if the clearinghouse is chosen for testing, and may not submit a volunteer form.

March 3-7, 2014 - Acknowledgement Testing

CMS announces a national testing week for current direct submitters (providers and clearinghouses).

  • If you are a direct submitter with at submitter ID, you can register directly on your Medicare Administrative Contractor (MAC) website. Use the "registration links" below, listed by jurisdiction, to register for testing week.
  • If you are an Electronic Data Interchange (EDI), you will need to contact and sign up through your clearing house.
  • If you use Direct Data Entry (DDE) to submit your claims, you cannot participate in testing week.

CMS has announced there will be additional testing weeks scheduled for May. To receive announcements and updates for these additional testing weeks, be sure to sign up for your MAC listserv. You can also perform “unofficial” testing from March-October through your MAC. For more details about unofficial testing, contact your MAC directly.

What you can expect during testing:

  • Test claims with ICD-10 codes must be submitted with current dates of service (i.e. Oct. 1, 2013 through March 3, 2014), since testing does not support future dated claims. All CEDI systems is able to accommodate use of ICD-10 codes on test claims with dates of service prior to October 1, 2014.
  • Test files must be marked as “Test” in the ISA record.
  • Test claims will receive the CEDI 277CA and/or 999 acknowledgement as appropriate to confirm the claim was accepted or rejected in the CEDI front end system.
  • Testing will not confirm claim payment nor produce a remittance advice.
  • MACs and CEDI will be staffed to handle increased call volume during this week

More information is available in MLN Matters® Article MM8465, “ICD-10 Testing with Providers through the Common Edits and Enhancements Module (CEM) and Common Electronic Data Interchange (CEDI).”

Watch MAC listserv messages for these announcements. This page will be updated as new information becomes available.  


MAC contractor registration links: