The UR plan must provide that—

(a) The committee makes a final decision on a beneficiary's need for continued stay and gives notice under §456.237 of an adverse decision within 2 working days after the assigned continued stay review date, except as required under paragraph (b) of this section.

(b) If the committee makes an adverse final decision on a beneficiary's need for continued stay before the assigned review date, the committee gives notice under §456.237 within 2 working days after the date of the final decision.