; and (II) in the case of potentially-avoidable readmissions, hospital discharge with respect to the initial discharge. (v) To the extent possible, the methodology shall be a methodology that has been successfully implemented for the purpose of adjusting payments to hospitals by a State plan under title XIX or by a major commercial payer or be a methodology that has been certified by an entity with a contract under section 1890(a). (vi) The methodology shall be open, transparent, and available for review and comment by the public. (vii) The Secretary may select proprietary methodologies that meet the criteria in clauses (i) through (vi). (C) Publication of specifications Not later than 15 days prior to each applicable prospective year, the Secretary shall make available, such as by publicly posting on the Internet Web site of the Centers for Medicare & Medicaid Services the annual updates to each methodology selected under a subparagraph of this paragraph. (7) Reporting by Secretary (A) Reports to hospitals For each data collection period that is with respect to an applicable prospective period beginning on or after October 1, 2018, the Secretary shall provide to each applicable hospital, not later than the first day of such applicable prospective period, a confidential report with respect to the potentially-avoidable outcomes of such hospital during such data collection period. (B) Reports to public For each data collection period that is with respect to an applicable prospective period described in paragraph (1), the Secretary shall, not later than 90 days after the first day of such applicable prospective period, make available to the public (including by posting on the Hospital Compare Web site) in an easily understandable format information regarding the performance of each applicable hospital during such data collection period with respect to potentially-avoidable outcomes. (8) Definitions In this subsection: (A) Applicable hospital The term applicable hospital means a subsection (d) hospital. (B) Data