§ 422.258 Calculation of benchmarks.
(a) The term “MA area-specific non-drug monthly benchmark amount” means, for a month in a year:
(1) For MA local plans with service areas entirely within a single MA local area:
(i) For years before 2007, one-twelfth of the annual MA capitation rate (described at § 422.306) for the area, adjusted as appropriate for the purpose of risk adjustment.
(ii) For years 2007 through 2010, one-twelfth of the applicable amount determined under section 1853(k)(1) of the Act for the area for the year, adjusted as appropriate for the purpose of risk adjustment.
(iii) For 2011, one-twelfth of the applicable amount determined under 1853(k)(1) for the area for 2010.
(iv) Beginning with 2012, one-twelfth of the blended benchmark amount described in paragraph (d) of this section, subject to paragraph (d)(8) of this section and adjusted as appropriate for the purpose of risk adjustment.
(2) For MA local plans with service areas including more than one MA local area, an amount equal to the weighted average of amounts described in paragraph (a)(1) of this section for the year for each local area (county) in the plan's service area, using as weights the projected number of enrollees in each MA local area that the plan used to calculate the bid amount, and adjusted as appropriate for the purpose of risk adjustment.
(b) For MA regional plans, the term “MA region-specific non-drug monthly benchmark amount” is:
(1) The sum of two components: the statutory component (based on a weighted average of local benchmarks in the region, as described in paragraph (c)(3) of this section; and the plan bid component (based on a weighted average of regional plan bids in the region as described in paragraph (c)(4) of this section).
(2) Announced before November 15 of each year, but after CMS has received the plan bids.
(c) Calculation of MA regional non-drug benchmark amount. CMS calculates the monthly regional non-drug benchmark amount for each MA region as follows:
(1) Reference month. For all calculations that follow, CMS will determine the number of MA eligible individuals in each local area, in each region, and nationally as of the reference month, which is a month in the previous calendar year CMS identifies.
(2) Statutory market share. CMS will determine the statutory national market share percentage as the proportion of the MA eligible individuals nationally who were not enrolled in an MA plan.
(3) Statutory component of the region-specific benchmark. (i) CMS calculates the unadjusted region-specific non-drug amount by multiplying the amount determined under paragraph (a) of this section for the year by the county's share of the MA eligible individuals residing in the region (the number of MA eligible individuals in the county divided by the number of MA eligible individuals in the region), and then adding all the enrollment-weighted county rates to a sum for the region.
(ii) CMS then multiplies the unadjusted region-specific non-drug amount from paragraph (c)(3)(i) of this section by the statutory market share to determine the statutory component of the regional benchmark.
(4) Plan-bid component of the region-specific benchmark. For each regional plan offered in a region, CMS will multiply the plan's unadjusted region-specific non-drug bid amount by the plan's share of enrollment (as determined under paragraph (c)(5) of this section) and then sum these products across all plans offered in the region. CMS then multiples this by 1 minus the statutory market share to determine the plan-bid component of the regional benchmark.