price index for all urban consumers (United States city average) for the 12-month period ending on December 31 of the previous year, until the Secretary implements the payment amount under this subparagraph. (vi) Coverage criteria (I) In general Not later than January 1, 2025, the Secretary, in consultation with stakeholders, shall establish objective clinical criteria for the coverage of liquid oxygen, and liquid oxygen equipment, supplies, and services under this title. (II) Update of criteria The Secretary shall review and update the coverage standards under this clause every 5 years to ensure the standards take into consideration current medical and clinical guidelines and take into effect modality in order to maximize beneficiary independence. . 102. Establishment of supplemental oxygen responsibilities criteria (a) In general 1834(a)(9) of the Social Security Act ( 42 U.S.C. 1395m(a)(9) ), as amended by section 101(b), is further amended by inserting the following new subparagraph: (G) Oxygen and oxygen related equipment, supplies, and services In consultation with stakeholders, the Secretary shall define the scope of services a supplier of oxygen and oxygen related equipment, supplies, and services must provide to receive payment under this part, to include— (i) conducting an initial evaluation of the beneficiary using the uniform oxygen patient evaluation form described in paragraph (5)(G) to determine the appropriate use of oxygen and oxygen related equipment, supplies, and services by the beneficiary, including the use of portable equipment