42 C.F.R. § 456.505
The Administrator may waive the UR plan requirements of subparts C or D of this part, except for provisions relating to disqualification of UR committee members under § 456.106 of subpart C, and § 456.206 of subpart D, if the Medicaid agency—
[43 FR 45266, Sept. 29, 1978, as amended at 61 FR 38399, July 24, 1996]