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CMS-1403-FC
be representative of an eligible professional’s patient
population. That is, 80 percent is a sufficiently large
reporting rate that the performance rates calculated from
the 80 percent sample are substantially the same as the
performance rates calculated from 100 percent of applicable
cases. Although a 100 percent sample of cases for which
individual quality measures or measures group are
applicable would eliminate any sampling error, requiring
100 percent reporting of applicable cases would cause
eligible professionals to be ineligible for an incentive
payment based on a failure to report data on a single
missed case that falls into the quality measure’s
denominator.
Additionally, the 80 percent reporting criteria for
individual quality measures is statutorily required through
2009 for individual quality measures reported through
claims. While the Secretary is authorized to establish a
different reporting threshold for measures groups and
registry-based reporting, we believe that it is necessary
and desirable to maintain consistency and to achieve a
balance amongst the reporting options in order to promote a
successful program.
With respect to requiring a minimum number of Medicare
Part B FFS patients in the sample for registry-based
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