; (B) in item (cc), by striking responsibility of the State and inserting responsibility of a State ; and (C) in item (dd), by striking the State plan under this title or under a waiver of the and inserting a State plan under this title or under a waiver of such a . (2) Effective date The amendments made by this subsection shall take effect with respect to foster youth who attain 18 years of age on or after January 1, 2023. (b) Guidance Not later than 1 year after the date of the enactment of this Act, the Secretary of Health and Human Services shall issue guidance to States, with respect to the State Medicaid programs of such States— (1) on best practices for— (A) removing barriers and ensuring streamlined, timely access to Medicaid coverage for former foster youth up to age 26; and (B) conducting outreach and raising awareness among such youth regarding Medicaid coverage options for such youth; and (2) which shall include examples of States that have successfully extended Medicaid coverage to former foster youth up to age 26. 1003. Demonstration project to increase substance use provider capacity under the Medicaid program Section 1903 of the Social Security Act ( 42 U.S.C. 1396b ) is amended by adding at the end the following new subsection: (aa) Demonstration project to increase substance use provider capacity (1) In general Not later than the date that is 180 days after the date of the enactment of this section, the Secretary shall, in consultation, as appropriate, with the Director of the Agency for Healthcare Research and Quality and the Assistant Secretary for Mental Health and Substance Use, conduct a 54-month demonstration project for the purpose described in paragraph (2) under which the Secretary shall— (A) for the first 18-month period of such project, award planning grants described in paragraph (3)