(1) The period (in this subsection referred to as a coverage period) during which an individual is entitled to benefits under the insurance program under this part shall begin on whichever of the following is the latest:
(A) In the case of an individual who enrolls under subsection (b)(2) of this section before the month in which the individual first satisfies subsection (a) of this section, the first day of such month.
(B) In the case of an individual who enrolls under subsection (b)(2) of this section in the month in which the individual first satisfies subsection (a) of this section, the first day of the month following the month in which the individual so enrolls.
(C) In the case of an individual who enrolls under subsection (b)(2) of this section in the month following the month in which the individual first satisfies subsection (a) of this section, the first day of the second month following the month in which the individual so enrolls.
(D) In the case of an individual who enrolls under subsection (b)(2) of this section more than one month following the month in which the individual first satisfies subsection (a) of this section, the first day of the third month following the month in which the individual so enrolls.
(E) In the case of an individual who enrolls under subsection (b)(3) of this section, the July 1 following the month in which the individual so enrolls.
(2) An individuals coverage period under this section shall continue until the individuals enrollment is terminated as follows:
(A) As of the month following the month in which the Secretary provides notice to the individual that the individual no longer meets the condition described in subsection (a)(2)(B) of this section.
(B) As of the month following the month in which the individual files notice that the individual no longer wishes to participate in the insurance program established by this part.
(C) As of the month before the first month in which the individual becomes eligible for hospital insurance benefits under section
426 (a) or
426–1 of this title.
(D) As of a date, determined under regulations of the Secretary, for nonpayment of premiums.
The regulations under subparagraph (D) may provide a grace period of not longer than 90 days, which may be extended to not to exceed 180 days in any case where the Secretary determines that there was good cause for failure to pay the overdue premiums within such 90-day period. Termination of coverage under this section shall result in simultaneous termination of any coverage affected under any other part of this subchapter.