§ 408.24 Individuals who enrolled or reenrolled before April 1, 1981 or after September 30, 1981.
(a) Enrollment. For an individual who first enrolled before April 1, 1981 or after September 30, 1981 and before January 1, 2023, the period includes the number of months elapsed between the close of the individual's initial enrollment period and the close of the enrollment period in which he or she first enrolled, and excludes the following:
(1) The three months of January through March 1968, if the individual first enrolled before April 1968.
(2) Any months before January 1973 during which the individual was precluded from enrolling or reenrolling by the 3-year limitation on enrollment or reenrollment that was in effect before October 30, 1972.
(3) Any months in or before a period of coverage under a State buy-in agreement.
(4) For an individual under age 65, any month before his or her current continuous period of entitlement to hospital insurance.
(5) For an individual age 65 or older, any month before the month he or she attained age 65.
(6) For premiums due for months beginning with September 1984 and ending with May 1986, the following:
(i) Any months after December 1982 during which the individual was—