Except as provided in subparagraph (B), in the case of an individual who is enrolled under part B of this subchapter, who resides in a CCA area, and who is not enrolled in an MA plan under this part, the monthly premium otherwise applied under part B of this subchapter (determined without regard to subsections (b), (f), and (i) of section
1395r of this title or any adjustment under this subsection) shall be adjusted in accordance with paragraph (2), but only in the case of premiums for months during the period in which the CCA program under this section for such area is in effect.