42 CFR 460.28 - Notice of CMS determination on waiver requests.
(a) Time limit for notification of determination. Within 90 days after receipt of a waiver request, CMS takes one of the following actions:
(1) Approves the request.
(b) Date of receipt. For purposes of the 90-day time limit described in this section, the date that a waiver request is received by CMS from the State administering agency is the date on which the request is delivered to the address designated by CMS.
(c) Waiver approval.
(2) CMS may withdraw approval of a waiver for good cause.