55 Pa. Code § 6400.51
The provisions of this § 6400.51 issued under sections 201(2), 403(b), 403.1(a) and (b), 911 and 1021 of the Human Services Code (62 P.S. §§ 201(2), 403(b), 403.1(a) and (b), 911 and 1021); and section 201(2) of the Mental Health and Intellectual Disability Act of 1966 (50 P.S. § 4201(2)).