42 U.S.C. § 1395i–2a — Hospital insurance benefits for disabled individuals who have exhausted other entitlement

(a) Eligibility. A person may enroll if the person: (1) is under 65; (2) was entitled to Part A under section 426(b), still has the disabling physical or mental impairment that supported the disability finding or disabled railroad-beneficiary finding, or is blind within section 416(i)(1), and lost that entitlement only because earnings exceeded the "substantial gainful activity amount" in section 423(d)(4); and (3) is not otherwise entitled to Part A. This section does not define "substantial gainful activity amount." (b) Enrollment. (1) Enrollment must use the manner and form set by regulation and occur during an authorized enrollment period. (2) The initial enrollment period starts in the month the person receives notice that section 426(b) entitlement will end solely because earnings exceed that amount, and ends 7 months later. (3) Beginning in 1990, a general enrollment period runs from January 1 through March 31 each year. (c) Coverage period. (1) Coverage starts on the latest applicable date: (A) for enrollment before the first month the person meets subsection (a), the first day of that month; (B) for enrollment in that first eligible month, the first day of the following month; (C) for enrollment in the next month, the first day of the second following month; (D) for enrollment more than one month later, the first day of the third month after enrollment; or (E) for general-period enrollment, the July 1 after enrollment. (2) Coverage continues until: (A) the month after the Secretary tells the person the person no longer meets subsection (a)(2)(B); (B) the month after the person gives notice of withdrawal; (C) the month before the first month the person becomes eligible under section 426(a) or 426–1; or (D) a regulatory date for unpaid premiums. A regulation may allow a grace period of up to 90 days, extended to at most 180 days for good cause. Ending this coverage also ends coverage affected under any other part of this subchapter. (3) Section 1395p(h), (i), and (m) applies to enrollment and nonenrollment here as it applies to enrollment, nonenrollment, and special periods under section 1395i–2. (d) Payment of premiums. (1)(A) Premiums must be paid to the Secretary at the times and in the manner set by regulation and deposited into the Treasury for the Hospital Insurance Trust Fund. (B) Premiums are due from the first month of coverage through the month the person dies or coverage ends, whichever comes first, but not for a month in which the person is eligible under section 426(b). (2) The premium provisions in section 1395i–2(d) through (f) apply to people enrolled under this section in the same way they apply to people enrolled under that section.