42 CFR §412.276

1. (a)Timing. The MGCRB notifies the parties in writing, with a copy to CMS, and issues a decision within 180 days after the first day of the 13-month period preceding the Federal fiscal year for which a hospital has filed a complete application. The hospital has 15 days from the date of the decision to request Administrator review.
2. (b)Appeal. The decision of the MGCRB is final and binding upon the parties unless it is reviewed by the Administrator and the decision is changed by the Administrator in accordance with § 412.278.