45 CFR § 31.7 - Review of a determination that a debt is past-due and legally enforceable.
(a) Requesting a review.
(1) If the debtor believes that all or part of the debt is not past-due or not legally enforceable, the debtor may request a review by the Department by sending a written request to the address provided in the notice. The written request must be received by the Department within 60 days from the date of the notice or, if the debtor has requested to inspect the records, within 30 days from the debtor's inspection of the records or the Department's mailing of the records under section 31.6(b), whichever is later.
(2) The request for review must be signed by the debtor, state the amount disputed, and fully identify and explain the evidence that the debtor believes supports the debtor's position. The debtor must submit with the request any documents that the debtor wishes to be considered, or the debtor must state in the request that additional information will be submitted within the above specified time period.
(3) Failure to timely request a review will be deemed an admission by the debtor that the debt is past-due and legally enforceable, and will result in a referral of the debt to the Department of the Treasury without further action.
(b) Review. Upon the timely submission of evidence by the debtor, the Department shall review the dispute and shall consider its records and any documentation and evidence submitted by the debtor. The Department shall make a determination based on the review of the written record, and shall send a written notice of its decision to the debtor. There is no administrative appeal of this decision.
(c) A debt that previously has been reviewed pursuant to this part, or that has been reduced to a judgment, will not be reconsidered under this part unless the evidence presented by the debtor disputes payments made or events occurring subsequent to the previous review or judgment.