; (C) substance use disorder treatment services provided with assistance made available under the grant will be provided without regard— (i) to the ability of the individual to pay for such services; and (ii) to the current or past health condition of the individual to be served; (D) substance use disorder treatment services will be provided in a setting that is accessible to low-income individuals with substance use disorders and to individuals with substance use disorders residing in rural areas; and (E) the confidentiality of individuals receiving substance use disorder treatment services will be maintained in a manner not inconsistent with applicable law. (c) Amount of grant to Indian entities (1) Indian Tribes In this section, the term Indian Tribe has the meaning given such term in section 4 of the Indian Self-Determination and Education Assistance Act. (2) Formula grants The Secretary, acting through the Indian Health Service, shall use 10 percent of the amount available under section 3435 for each fiscal year to provide grants to Indian entities in an amount determined pursuant to criteria developed by the Secretary in consultation with Indian Tribes, for the purposes of addressing substance use. (3) Use of amounts Notwithstanding any requirements in this section, Native entities may use amounts provided under grants awarded under this section for the uses identified in section 3422 and any other activities determined appropriate by the Secretary, in consultation with Indian Tribes. 3422. Use of amounts (a) Use of funds An entity shall use amounts received under a grant under section 3421 to provide direct financial assistance to eligible entities for the purpose of delivering or enhancing— (1) prevention services described in subsection (b); (2) core medical services described in subsection (c); (3) recovery and support services described in subsection (d); (4) early intervention and engagement services described in subsection (e); (5) harm reduction services described in subsection (f)