At a State’s option and notwithstanding any other provision of this subchapter, a State may choose not to provide medical assistance under this subsection with respect to any (or all) of the items and services described in paragraphs (4)(A), (6), (7), (8), (11), (13), (14), (15), (16), (18), (20), and (21) of section
1396d
(a) of this title.