1. Improvements to home health payment reforms under Medicare (a) Application of budget neutrality Section 1895(b)(3) of the Social Security Act ( 42 U.S.C. 1395fff(b)(3) ), as amended by section 51001(a)(2) of the Bipartisan Budget Act of 2018 ( Public Law 115–123 ), is amended— (1) in subparagraph (A)(iv), in the fourth sentence— (A) by striking shall make and inserting shall not make ; and (B) by striking and shall provide a description and all that follows through the period and inserting a period; and (2) in subparagraph (D)— (A) in the subparagraph heading, by striking assumptions and inserting observed evidence ; (B) in clause (i)— (i) by striking differences between assumed and all that follows through and actual ; (ii) by inserting attributable to the implementation of paragraphs (2)(B) and (4)(B) after behavior changes ; and (iii) by adding at the end the following: The Secretary shall publish the determination under this clause with respect to an applicable year, including a description of the observed evidence used to make such determination, in the notice and comment rulemaking to update the prospective payment system under this subsection for such year. For purposes of the preceding sentence, the term observed evidence means statistically valid data from the most recent cost report and claims regarding changes in the nature of home health agency patients, patterns of care, service costs, and claims coding after January 1, 2020, reflecting behavioral changes relating to implementation of the provisions of and amendments made by section 51001 of the Bipartisan Budget Act of 2018 ( Public Law 115–123 ). ; (C) in clause (ii), by inserting attributable to the implementation of paragraphs (2)(B) and (4)(B) after expenditures ; and (D) in clause (iii)— (i) by adding attributable to the implementation of paragraphs (2)(B) and (4)(B) after expenditures