42 CFR § 405.950 - Time frame for making a redetermination.
(a) General rule. The contractor mails, or otherwise transmits, written notice of the redetermination or dismissal to the parties to the redetermination at their last known addresses within 60 calendar days of the date the contractor receives a timely filed request for redetermination.
(1) If a contractor grants an appellant's request for an extension of the 120 calendar day filing deadline made in accordance with § 405.942(b), the 60 calendar day decision-making time frame begins on the date the contractor receives the late-filed request for redetermination, or when the request for an extension is granted, whichever is later.
(2) If a contractor receives from multiple parties timely requests for redetermination of a claim determination, consistent with § 405.944(c), the contractor must issue a redetermination or dismissal within 60 calendar days of the latest filed request.
(3) If a party submits additional evidence after the request for redetermination is filed, the contractor's 60 calendar day decision-making time frame is extended for up to 14 calendar days for each submission, consistent with § 405.946(b).