The UR plan must provide that—

(a) The group performing UR assigns subsequent continued stay review dates in accordance with §456.435.

(b) The group assigns a subsequent continued stay review date each time it decides under §456.436 that the continued stay is needed—

(1) At least every 6 months; or

(2) More frequently than every six months if indicated at the time of continued stay review; and

(c) The group insures that each continued stay review date it assigns is recorded in the beneficiary's record.