Commencement
The period during which an individual is entitled to benefits under the insurance program established by this part (hereinafter referred to as his “coverage period”) shall begin on whichever of the following is the latest:
(1)#
July 1, 1966 , or (in the case of a disabled individual who has not attained age 65) July 1, 1973 ; or
(2)#
(A) in the case of an individual who enrolls pursuant to subsection (d) of section 1395p of this title before the month in which he first satisfies paragraph (1) or (2) of section 1395 o (a) of this title, the first day of such month,
(B) in the case of an individual who first satisfies such paragraph in a month beginning before January 2023 and who enrolls pursuant to such subsection (d)— (i) in such month in which he first satisfies such paragraph, the first day of the month following the month in which he so enrolls, (ii) in the month following such month in which he first satisfies such paragraph, the first day of the second month following the month in which he so enrolls, or (iii) more than one month following such month in which he satisfies such paragraph, the first day of the third month following the month in which he so enrolls,
(C) in the case of an individual who first satisfies such paragraph in a month beginning on or after January 1, 2023 , and who enrolls pursuant to such subsection (d) in such month in which he first satisfies such paragraph or in any subsequent month of his initial enrollment period, the first day of the month following the month in which he so enrolls, or
(D) in the case of an individual who enrolls pursuant to subsection (e) of section 1395p of this title in a month beginning— (i) before January 1, 2023 , the July 1 following the month in which he so enrolls; or (ii) on or after January 1, 2023 , the first day of the month following the month in which he so enrolls; or
(2)(A)#
in the case of an individual who enrolls pursuant to subsection (d) of section 1395p of this title before the month in which he first satisfies paragraph (1) or (2) of section 1395 o (a) of this title, the first day of such month,
(2)(B)
(3)#
in the case of an individual who is deemed to have enrolled—
(A) on or before the last day of the third month of his initial enrollment period, the first day of the month in which he first meets the applicable requirements of section 1395 o (a) of this title or July 1, 1973 , whichever is later, or
(B) on or after the first day of the fourth month of his initial enrollment period, and where such month begins— (i) before January 1, 2023 , as prescribed under subparagraphs (B)(i), (B)(ii), (B)(iii), and (D)(i) of paragraph (2), or (ii) on or after January 1, 2023 , as prescribed under subparagraphs (C) and (D)(ii) of paragraph (2).
(3)(A)#
on or before the last day of the third month of his initial enrollment period, the first day of the month in which he first meets the applicable requirements of section 1395 o (a) of this title or July 1, 1973 , whichever is later, or
(3)(B)#
on or after the first day of the fourth month of his initial enrollment period, and where such month begins—
(i) before January 1, 2023 , as prescribed under subparagraphs (B)(i), (B)(ii), (B)(iii), and (D)(i) of paragraph (2), or
(ii) on or after January 1, 2023 , as prescribed under subparagraphs (C) and (D)(ii) of paragraph (2).