42 C.F.R. § 438.14
(a) Definitions. As used in this section, the following terms have the indicated meanings:
Indian means any individual defined at 25 U.S.C. 1603(13), 1603(28), or 1679(a), or who has been determined eligible as an Indian, under 42 CFR 136.12. This means the individual:
(ii) Resides in an urban center and meets one or more of the four criteria:
Indian health care provider (IHCP) means a health care program operated by the Indian Health Service (IHS) or by an Indian Tribe, Tribal Organization, or Urban Indian Organization (otherwise known as an I/T/U) as those terms are defined in section 4 of the Indian Health Care Improvement Act (25 U.S.C. 1603).
Indian managed care entity (IMCE) means a MCO, PIHP, PAHP, PCCM, or PCCM entity that is controlled (within the meaning of the last sentence of section 1903(m)(1)(C) of the Act) by the Indian Health Service, a Tribe, Tribal Organization, or Urban Indian Organization, or a consortium, which may be composed of one or more Tribes, Tribal Organizations, or Urban Indian Organizations, and which also may include the Service.
(b) Network and coverage requirements. All contracts between a State and a MCO, PIHP, PAHP, and PCCM entity, to the extent that the PCCM entity has a provider network, which enroll Indians must:
(2) Require that IHCPs, whether participating or not, be paid for covered services provided to Indian enrollees who are eligible to receive services from such providers as follows:
(5) In a State where timely access to covered services cannot be ensured due to few or no IHCPs, an MCO, PIHP, PAHP and PCCM entity will be considered to have met the requirement in paragraph (b)(1) of this section if—
(c) Payment requirements.