; and (2) by adding at the end the following new subparagraph: (J) Adjustment for not submitting supplemental benefit information In the case of a Medicare Advantage plan offered by a Medicare Advantage organization that, with respect to a plan year (beginning on or after January 1 of the second year beginning on or after the date of the enactment of this subparagraph), has not submitted complete and accurate information, as required under section 1852(c)(3), for each month during such plan year (until such month, if any, during such plan year during which the organization submits such complete and accurate information (as determined in accordance with the metrics and methods specified pursuant to section 1852(c)(3)(B))), the monthly payment amount specified in clauses (i), (ii), and (iii) of subparagraph (B), as applicable, shall be reduced by 5 percent of the amount that would otherwise apply. . 3. Medicare Advantage encounter data accountability (a) In general Section 1852(c) of the Social Security Act ( 42 U.S.C. 1395w–122(c) ), as amended by section 2, is further amended by adding at the end the following new paragraph: (4) Encounter data accountability (A) Submissions to Secretary For each plan year beginning on or after January 1 of the second year beginning on or after the date of the enactment of this paragraph, a Medicare Advantage organization offering a Medicare Advantage plan shall, in accordance with the regulations promulgated pursuant to subparagraph (B), submit to the Secretary, not later than 6 months after the end of the plan year, complete and accurate (as specified by the Secretary pursuant to such regulations) payment data, disaggregated by plan and beneficiary expenditure, and encounter data for all encounters covered through benefits under the original fee-for-service program defined under subsection (a)(1)(B) occurring during the plan year with respect to Medicare Advantage eligible individuals enrolled under such plan during such plan year. (B) Regulations Not later than July 1 of the