34 C.F.R. § 363.4
(a) The State may use funds allotted under this part to—
(c) Nothing in this part will be construed to prohibit a State from providing—
(d) A State must coordinate with the entities described in § 363.50(a) regarding the services provided to individuals with the most significant disabilities, including youth with the most significant disabilities, under this part and under 34 CFR part 361 to ensure that the services are complementary and not duplicative.
(Authority: Sections 7(39), 12(c), 604, 606(b)(6), and 608 of the Rehabilitation Act of 1973, as amended; 29 U.S.C. 705(39), 709(c), 795i, 795k(b)(6), and 795m)