With respect to a qualified disabled and working individual described in section
1396d
(s) of this title whose income (as determined under paragraph (3) of that section) exceeds 150 percent of the official poverty line referred to in that paragraph, the State plan of a State may provide for the charging of a premium (expressed as a percentage of the medicare cost-sharing described in section
1396d
(p)(3)(A)(i) of this title provided with respect to the individual) according to a sliding scale under which such percentage increases from 0 percent to 100 percent, in reasonable increments (as determined by the Secretary), as the individual’s income increases from 150 percent of such poverty line to 200 percent of such poverty line.