(a) Basic rules. Except as specified in paragraph (b) of this section, the rules set forth in § 408.24 apply to an individual who enrolled or reenrolled between April 1 and September 30, 1981.

(b) Exception. For an individual who enrolled or reenrolled between April 1 and September 30, 1981, the months to be counted ran through the month in which he or she reenrolled. (During those 6 months, continuous open enrollment was in effect and there was no 3-month “general enrollment period”.)