Section 431.40 - Basis and scope(a) This subpart sets forth State plan requirements and exceptions that pertain to the following administrative requirements and provisions of the Act: (1) Statewideness-section 1902(a)(1);(2) Proper and efficient administration-section 1902(a)(4);(3) Comparability of services-section 1902(a)(10) (B)-(E);(4) Payment for services furnished outside the State-section 1902(a)(16);(5) Free choice of providers-section 1902(a)(23);(6) Special waiver provisions applicable to American Samoa and the Northern Mariana Islands-section 1902(j); and(7) Exceptions to, and waiver of, State plan requirements-sections 1915 (a)-(c) and 1916 (a)(3) and (b)(3).(b) Other applicable regulations include the following:(1) Section 430.25 Waivers of State plan requirements.(2) Section 440.250 Limits on comparability of services.