; 117 Stat. 2283), as amended by section 5201(b) of the Deficit Reduction Act of 2005 ( Public Law 109–171 ; 120 Stat. 46), section 3131(c) of the Patient Protection and Affordable Care Act ( Public Law 111–148 ; 124 Stat. 428), and section 210 of the Medicare Access and CHIP Reauthorization Act of 2015 ( Public Law 114–10 ; 129 Stat. 87), is amended by striking January 1, 2018 each place it appears and inserting January 1, 2023 . (c) Reports (1) Interim report Not later than March 15, 2022, the Medicare Payment Advisory Commission shall submit to Congress an interim report on the modifications made by section 1895(b)(7) of the Social Security Act ( 42 U.S.C. 1395fff(b)(7) ), as added by subsection (a), and any unintended consequences including— (A) behavioral changes that may occur due to lower reimbursement for Medication Management, Training and Assessment; (B) behavioral changes that may occur due to higher reimbursement following hospitalizations; (C) use of statistically derived, versus actual, payment weights; (D) questionable encounters; (E) use of both primary and secondary diagnosis codes for episode assignment; and (F) reducing reimbursement of behavioral health episodes, compared to the Home Health Resource Group model. (2) Final report Not later than March 15, 2026, MedPAC, the Medicare Payment Advisory Commission shall submit to Congress a final report on such modifications and any such consequences.