; and (3) comparing health care provider payment rates for primary care services under the Medicaid program under such title during the 12-month period beginning on the first day of the period described in subparagraph (C)(ii) of section 1902(a)(13) of such Act ( 42 U.S.C. 1396a(a)(13) ), as amended by section 2, across States, using the indexes described in subsection (b). (b) Indexes described The indexes described in this subsection are each of the following: (1) A Medicaid fee index, comparing each State’s average fee for primary care services under the Medicaid program under such title to the national average for such services. (2) A Medicaid-to-Medicare fee index, comparing each State’s average fee for primary care services under the Medicaid program under such title to the fee for such services under the Medicare program under title XVIII of such Act ( 42 U.S.C. 1395 et seq. ). (3) A Medicaid fee change index, comparing fees for primary care services under the Medicaid program under such title during the 12-month period preceding the first day of the period described in subparagraph (C)(ii) of section 1902(a)(13) of such Act ( 42 U.S.C. 1396a(a)(13) ), as amended by section 2, to the fees for such services during the 12-month period beginning on such first day. (c) Authorization of appropriations For purposes of this section, there is authorized to be appropriated $200,000 for fiscal year 2024, to be available until expended. 4. Sense of Congress regarding use of Bright Futures guidelines It is the sense of Congress that health care providers should provide early and periodic screening, diagnostic, and treatment services (as defined in section 1905(r) of the Social Security Act ( 42 U.S.C. 1396d(r) )) in accordance with the guidelines of the American Academy of Pediatrics entitled, Bright Futures: Guidelines for Health Supervision of Infants, Children, and Adolescents .