Section 457.800 - Basis, scope, and applicability(a)Statutory basis. This subpart interprets and implements section 2102(b)(3)(C) of the Act, which provides that the State plan must include a description of procedures the State uses to ensure that health benefits coverage provided under the State plan does not substitute for coverage under group health plans.(b)Scope. This subpart sets forth State plan requirements relating to substitution of coverage in general and specific requirements relating to substitution of coverage under premium assistance programs.(c)Applicability. The requirements of this subpart apply to separate child health programs.