When submitting a MAT15 for a renumbered unit, accuracy matters. Incorrect or incomplete information can cause your submission to be rejected, delaying voucher processing and requiring additional corrections.

Before submitting your MAT15, verify the following:

• Previous Unit Number: Enter the correct Previous Unit Number. Missing or incorrect information will result in a rejected submission.
• Transaction Type: Ensure the Transaction Type is set to 3 = Renumber Unit.

These two fields are the most common reasons CMS rejects MAT15 submissions for unit renumbering. Taking a few extra moments to review your submission before transmitting it can help avoid processing delays and reduce the need for corrections.

Review these fields before submission to improve processing efficiency and reduce avoidable voucher rejections.

Search on cms-results.com for additional guidance, compliance resources, and free training opportunities to help ensure accurate MAT15, voucher, and certification submissions.