42 C.F.R. § 457.125 – Provision of child health assistance to American Indian and Alaska Native children.

(a) Enrollment. A State must include in its State plan a description of procedures used to ensure the provision of child health assistance to American Indian and Alaska Native children.
(b) Exemption from cost sharing. The procedures required by paragraph (a) of this section must include an exemption from cost sharing for American Indian and Alaska Native children in accordance with § 457.535.