
From the U.S. Code Online via GPO Access
[wais.access.gpo.gov]
[Laws in effect as of January 23, 2000]
[Document affected by Public Law 106-554 Section 1(a)(6)[115(b)]]
[CITE: 42USC1395p]

 
                 TITLE 42--THE PUBLIC HEALTH AND WELFARE
 
                       CHAPTER 7--SOCIAL SECURITY
 
        SUBCHAPTER XVIII--HEALTH INSURANCE FOR AGED AND DISABLED
 
 Part B--Supplementary Medical Insurance Benefits for Aged and Disabled
 
Sec. 1395p. Enrollment periods


(a) Generally; regulations

    An individual may enroll in the insurance program established by 
this part only in such manner and form as may be prescribed by 
regulations, and only during an enrollment period prescribed in or under 
this section.

(b) Repealed. Pub. L. 96-499, title IX, Sec. 945(a), Dec. 5, 1980, 94 
        Stat. 2642

(c) Initial general enrollment period; eligible individuals before March 
        1, 1966

    In the case of individuals who first satisfy paragraph (1) or (2) of 
section 1395o of this title before March 1, 1966, the initial general 
enrollment period shall begin on the first day of the second month which 
begins after July 30, 1965, and shall end on May 31, 1966. For purposes 
of this subsection and subsection (d) of this section, an individual who 
has attained age 65 and who satisfies paragraph (1) of section 1395o of 
this title but not paragraph (2) of such section shall be treated as 
satisfying such paragraph (1) on the first day on which he is (or on 
filing application would have been) entitled to hospital insurance 
benefits under part A of this subchapter.

(d) Eligible individuals on or after March 1, 1966

    In the case of an individual who first satisfies paragraph (1) or 
(2) of section 1395o of this title on or after March 1, 1966, his 
initial enrollment period shall begin on the first day of the third 
month before the month in which he first satisfies such paragraphs and 
shall end seven months later. Where the Secretary finds that an 
individual who has attained age 65 failed to enroll under this part 
during his initial enrollment period (based on a determination by the 
Secretary of the month in which such individual attained age 65), 
because such individual (relying on documentary evidence) was mistaken 
as to his correct date of birth, the Secretary shall establish for such 
individual an initial enrollment period based on his attaining age 65 at 
the time shown in such documentary evidence (with a coverage period 
determined under section 1395q of this title as though he had attained 
such age at that time).

(e) General enrollment period

    There shall be a general enrollment period during the period 
beginning on January 1 and ending on March 31 of each year.

(f) Individuals deemed enrolled in medical insurance program

    Any individual--
        (1) who is eligible under section 1395o of this title to enroll 
    in the medical insurance program by reason of entitlement to 
    hospital insurance benefits as described in paragraph (1) of such 
    section, and
        (2) whose initial enrollment period under subsection (d) of this 
    section begins after March 31, 1973, and
        (3) who is residing in the United States, exclusive of Puerto 
    Rico,

shall be deemed to have enrolled in the medical insurance program 
established by this part.

(g) Commencement of enrollment period

    All of the provisions of this section shall apply to individuals 
satisfying subsection (f) of this section, except that--
        (1) in the case of an individual who satisfies subsection (f) of 
    this section by reason of entitlement to disability insurance 
    benefits described in section 426(b) of this title, his initial 
    enrollment period shall begin on the first day of the later of (A) 
    April 1973 or (B) the third month before the 25th month of such 
    entitlement, and shall reoccur with each continuous period of 
    eligibility (as defined in section 1395r(d) of this title) and upon 
    attainment of age 65;
        (2)(A) in the case of an individual who is entitled to monthly 
    benefits under section 402 or 423 of this title on the first day of 
    his initial enrollment period or becomes entitled to monthly 
    benefits under section 402 of this title during the first 3 months 
    of such period, his enrollment shall be deemed to have occurred in 
    the third month of his initial enrollment period, and
        (B) in the case of an individual who is not entitled to benefits 
    under section 402 of this title on the first day of his initial 
    enrollment period and does not become so entitled during the first 3 
    months of such period, his enrollment shall be deemed to have 
    occurred in the month in which he files the application establishing 
    his entitlement to hospital insurance benefits provided such filing 
    occurs during the last 4 months of his initial enrollment period; 
    and
        (3) in the case of an individual who would otherwise satisfy 
    subsection (f) of this section but does not establish his 
    entitlement to hospital insurance benefits until after the last day 
    of his initial enrollment period (as defined in subsection (d) of 
    this section), his enrollment shall be deemed to have occurred on 
    the first day of the earlier of the then current or immediately 
    succeeding general enrollment period (as defined in subsection (e) 
    of this section).

(h) Waiver of enrollment period requirements where individual's rights 
        were prejudiced by administrative error or inaction

    In any case where the Secretary finds that an individual's 
enrollment or nonenrollment in the insurance program established by this 
part or part A of this subchapter pursuant to section 1395i-2 of this 
title is unintentional, inadvertent, or erroneous and is the result of 
the error, misrepresentation, or inaction of an officer, employee, or 
agent of the Federal Government, or its instrumentalities, the Secretary 
may take such action (including the designation for such individual of a 
special initial or subsequent enrollment period, with a coverage period 
determined on the basis thereof and with appropriate adjustments of 
premiums) as may be necessary to correct or eliminate the effects of 
such error, misrepresentation, or inaction.

(i) Special enrollment periods

    (1) In the case of an individual who--
        (A) at the time the individual first satisfies paragraph (1) or 
    (2) of section 1395o of this title, is enrolled in a group health 
    plan described in section 1395y(b)(1)(A)(v) of this title by reason 
    of the individual's (or the individual's spouse's) current 
    employment status, and
        (B) has elected not to enroll (or to be deemed enrolled) under 
    this section during the individual's initial enrollment period,

there shall be a special enrollment period described in paragraph (3). 
In the case of an individual not described in the previous sentence who 
has not attained the age of 65, at the time the individual first 
satisfies paragraph (1) of section 1395o of this title, is enrolled in a 
large group health plan (as that term is defined in section 
1395y(b)(1)(B)(iii) of this title) by reason of the individual's current 
employment status (or the current employment status of a family member 
of the individual), and has elected not to enroll (or to be deemed 
enrolled) under this section during the individual's initial enrollment 
period, there shall be a special enrollment period described in 
paragraph (3)(B).
    (2) In the case of an individual who--
        (A)(i) has enrolled (or has been deemed to have enrolled) in the 
    medical insurance program established under this part during the 
    individual's initial enrollment period, or (ii) is an individual 
    described in paragraph (1)(A);
        (B) has enrolled in such program during any subsequent special 
    enrollment period under this subsection during which the individual 
    was not enrolled in a group health plan described in section 
    1395y(b)(1)(A)(v) of this title by reason of the individual's (or 
    individual's spouse's) current employment status; and
        (C) has not terminated enrollment under this section at any time 
    at which the individual is not enrolled in such a group health plan 
    by reason of the individual's (or individual's spouse's) current 
    employment status,

there shall be a special enrollment period described in paragraph (3). 
In the case of an individual not described in the previous sentence who 
has not attained the age of 65, has enrolled (or has been deemed to have 
enrolled) in the medical insurance program established under this part 
during the individual's initial enrollment period, or is an individual 
described in the second sentence of paragraph (1), has enrolled in such 
program during any subsequent special enrollment period under this 
subsection during which the individual was not enrolled in a large group 
health plan (as that term is defined in section 1395y(b)(1)(B)(iii) of 
this title) by reason of the individual's current employment status (or 
the current employment status of a family member of the individual), and 
has not terminated enrollment under this section at any time at which 
the individual is not enrolled in such a large group health plan by 
reason of the individual's current employment status (or the current 
employment status of a family member of the individual), there shall be 
a special enrollment period described in paragraph (3)(B).
    (3)(A) The special enrollment period referred to in the first 
sentences of paragraphs (1) and (2) is the period including each month 
during any part of which the individual is enrolled in a group health 
plan described in section 1395y(b)(1)(A)(v) of this title by reason of 
current employment status ending with the last day of the eighth 
consecutive month in which the individual is at no time so enrolled.
    (B) The special enrollment period referred to in the second 
sentences of paragraphs (1) and (2) is the period including each month 
during any part of which the individual is enrolled in a large group 
health plan (as that term is defined in section 1395y(b)(1)(B)(iii) of 
this title) by reason of the individual's current employment status (or 
the current employment status of a family member of the individual) 
ending with the last day of the eighth consecutive month in which the 
individual is at no time so enrolled.
    (4)(A) In the case of an individual who is entitled to benefits 
under part A of this subchapter pursuant to section 426(b) of this title 
and--
        (i) who at the time the individual first satisfies paragraph (1) 
    of section 1395o of this title--
            (I) is enrolled in a group health plan described in section 
        1395y(b)(1)(A)(v) of this title by reason of the individual's 
        current or former employment or by reason of the current or 
        former employment status of a member of the individual's family, 
        and
            (II) has elected not to enroll (or to be deemed enrolled) 
        under this section during the individual's initial enrollment 
        period; and

        (ii) whose continuous enrollment under such group health plan is 
    involuntarily terminated at a time when the enrollment under the 
    plan is not by reason of the individual's current employment or by 
    reason of the current employment of a member of the individual's 
    family,

there shall be a special enrollment period described in subparagraph 
(B).
    (B) The special enrollment period referred to in subparagraph (A) is 
the 6-month period beginning on the first day of the month which 
includes the date of the enrollment termination described in 
subparagraph (A)(ii).

(Aug. 14, 1935, ch. 531, title XVIII, Sec. 1837, as added Pub. L. 89-97, 
title I, Sec. 102(a), July 30, 1965, 79 Stat. 304; amended Pub. L. 89-
384, Sec. 3(a), (b), Apr. 8, 1966, 80 Stat. 105; Pub. L. 90-248, title 
I, Secs. 136(a), 145(a), (b), Jan. 2, 1968, 81 Stat. 853, 859; Pub. L. 
92-603, title II, Secs. 201(c)(2), 206(a), 259(a), 260, Oct. 30, 1972, 
86 Stat. 1372, 1378, 1448; Pub. L. 96-265, title I, Sec. 103(a)(3), June 
9, 1980, 94 Stat. 444; Pub. L. 96-499, title IX, Sec. 945(a), (b), Dec. 
5, 1980, 94 Stat. 2642; Pub. L. 97-35, title XXI, Sec. 2151(a)(1), (2), 
Aug. 13, 1981, 95 Stat. 801; Pub. L. 98-369, div. B, title III, 
Secs. 2338(b), 2354(b)(10), July 18, 1984, 98 Stat. 1092, 1101; Pub. L. 
99-272, title IX, Secs. 9201(c)(1), 9219(a)(2), Apr. 7, 1986, 100 Stat. 
171, 182; Pub. L. 99-509, title IX, Sec. 9319(c)(1)-(3), Oct. 21, 1986, 
100 Stat. 2011; Pub. L. 99-514, title XVIII, Sec. 1895(b)(12), Oct. 22, 
1986, 100 Stat. 2934; Pub. L. 101-239, title VI, Sec. 6202(b)(4)(C), 
(c)(1), Dec. 19, 1989, 103 Stat. 2233; Pub. L. 103-432, title I, 
Secs. 147(f)(1)(A), 151(c)(2), Oct. 31, 1994, 108 Stat. 4430, 4435; Pub. 
L. 105-33, title IV, Secs. 4581(b)(1), 4631(a)(2), Aug. 5, 1997, 111 
Stat. 465, 486.)

                       References in Text

    Part A of this subchapter, referred to in subsecs. (c), (h), and 
(i)(4)(A), is classified to section 1395c et seq. of this title.


                               Amendments

    1997--Subsec. (i)(1) to (3). Pub. L. 105-33, Sec. 4631(a)(2), 
substituted ``1395y(b)(1)(B)(iii) of this title'' for 
``1395y(b)(1)(B)(iv) of this title'' wherever appearing.
    Subsec. (i)(4). Pub. L. 105-33, Sec. 4581(b)(1), added par. (4).
    1994--Subsec. (i)(1). Pub. L. 103-432, Sec. 151(c)(2)(A), in closing 
provisions substituted ``(as that term is defined in section 
1395y(b)(1)(B)(iv) of this title) by reason of the individual's current 
employment status (or the current employment status of a family member 
of the individual)'' for ``as an active individual (as those terms are 
defined in section 1395y(b)(1)(B)(iv) of this title)''.
    Subsec. (i)(1)(A). Pub. L. 103-432, Sec. 151(c)(2)(D), inserted 
``status'' after ``current employment''.
    Subsec. (i)(2). Pub. L. 103-432, Sec. 151(c)(2)(A), (C), in closing 
provisions substituted ``(as that term is defined in section 
1395y(b)(1)(B)(iv) of this title) by reason of the individual's current 
employment status (or the current employment status of a family member 
of the individual)'' for ``as an active individual (as those terms are 
defined in section 1395y(b)(1)(B)(iv) of this title)'' and ``by reason 
of the individual's current employment status (or the current employment 
status of a family member of the individual)'' for ``as an active 
individual''.
    Subsec. (i)(2)(B), (C). Pub. L. 103-432, Sec. 151(c)(2)(D), inserted 
``status'' after ``current employment''.
    Subsec. (i)(3)(A). Pub. L. 103-432, Sec. 151(c)(2)(D), inserted 
``status'' after ``current employment''.
    Pub. L. 103-432, Sec. 147(f)(1)(A), substituted ``including each 
month during any part of which the individual is enrolled'' for 
``beginning with the first day of the first month in which the 
individual is no longer enrolled'' and ``ending with the last day of the 
eighth consecutive month in which the individual is at no time so 
enrolled'' for ``and ending seven months later''.
    Subsec. (i)(3)(B). Pub. L. 103-432, Sec. 151(c)(2)(B), substituted 
``in a large group health plan (as that term is defined in section 
1395y(b)(1)(B)(iv) of this title) by reason of the individual's current 
employment status (or the current employment status of a family member 
of the individual)'' for ``as an active individual in a large group 
health plan (as such terms are defined in section 1395y(b)(1)(B)(iv) of 
this title)''.
    Pub. L. 103-432, Sec. 147(f)(1)(A), substituted ``including each 
month during any part of which the individual is enrolled'' for 
``beginning with the first day of the first month in which the 
individual is no longer enrolled'' and ``ending with the last day of the 
eighth consecutive month in which the individual is at no time so 
enrolled'' for ``and ending seven months later''.
    1989--Subsec. (i)(1). Pub. L. 101-239, Sec. 6202(c)(1)(A), 
redesignated subpars. (B) and (C) as (A) and (B), respectively, struck 
out former subpar. (A) which read as follows: ``has attained the age of 
65,'', and inserted ``not described in the previous sentence'' after 
``In the case of an individual'' in second sentence.
    Pub. L. 101-239, Sec. 6202(b)(4)(C), substituted ``section 
1395y(b)(1)(A)(v)'' and ``section 1395y(b)(1)(B)(iv)'' for ``section 
1395y(b)(3)(A)(iv)'' and ``section 1395y(b)(4)(B)'', respectively.
    Subsec. (i)(2). Pub. L. 101-239, Sec. 6202(c)(1)(B), substituted 
``(1)(A)'' for ``(1)(B)'' in subpar. (B)(i), redesignated subpars. (B) 
and (C) as (A) and (B), respectively, struck out former subpar. (A) 
which read as follows: ``has attained the age of 65;'', and inserted 
``not described in the previous sentence'' after ``In the case of an 
individual'' in second sentence.
    Pub. L. 101-239, Sec. 6202(b)(4)(C), substituted ``section 
1395y(b)(1)(A)(v)'' and ``section 1395y(b)(1)(B)(iv)'' for ``section 
1395y(b)(3)(A)(iv)'' and ``section 1395y(b)(4)(B)'', respectively.
    Subsec. (i)(3). Pub. L. 101-239, Sec. 6202(b)(4)(C), substituted 
``section 1395y(b)(1)(A)(v)'' and ``section 1395y(b)(1)(B)(iv)'' for 
``section 1395y(b)(3)(A)(iv)'' and ``section 1395y(b)(4)(B)'', 
respectively.
    1986--Subsec. (i)(1). Pub. L. 99-509, Sec. 9319(c)(1), inserted 
sentence at end providing for a special enrollment period described in 
paragraph (3)(B) for individuals not age 65, enrolled in a large health 
plan, and having elected not to enroll during initial enrollment period.
    Subsec. (i)(1)(A). Pub. L. 99-514 realigned margins of subpar. (A).
    Pub. L. 99-272, Sec. 9219(a)(2)(A), amended subpar. (A) generally, 
substituting ``has attained the age of 65'' for ``meets the conditions 
described in clauses (i) and (iii) of section 1395y(b)(3)(A) of this 
title''.
    Subsec. (i)(2). Pub. L. 99-509, Sec. 9319(c)(2), inserted sentence 
at end providing for a special enrollment period described in paragraph 
(3)(B) for individuals not age 65, enrolled or deemed enrolled in the 
medical insurance program established under this part, or is an 
individual described in the second sentence of paragraph (1), has 
enrolled in such program during a subsequent special enrollment period 
during which the individual was not enrolled in a large group health 
plan, and has not terminated enrollment.
    Subsec. (i)(2)(A). Pub. L. 99-272, Sec. 9219(a)(2)(B), amended 
subpar. (A) generally, substituting ``has attained the age of 65;'' for 
``meets the conditions described in clauses (i) and (iii) of section 
1395y(b)(3)(A) of this title,''.
    Subsec. (i)(2)(B). Pub. L. 99-272, Sec. 9219(a)(2)(B), amended 
subpar. (B) generally. Prior to amendment, subpar. (B) read as follows: 
``has enrolled (or has been deemed to have enrolled) in the medical 
insurance program established under this part during the individual's 
initial enrollment period and any subsequent special enrollment period 
under this subsection during which the individual was not enrolled in a 
group health plan described in section 1395y(b)(3)(A)(iv) of this title 
by reason of the individual's (or individual's spouse's) current 
employment, and''.
    Subsec. (i)(2)(C), (D). Pub. L. 99-272, Sec. 9219(a)(2)(B), added 
subpar. (C) and redesignated former subpar. (C) as (D).
    Subsec. (i)(3). Pub. L. 99-509, Sec. 9319(c)(3), designated existing 
provisions as subpar. (A), inserted ``the first sentences of'' after 
``referred to in'', and added subpar. (B).
    Pub. L. 99-272, Sec. 9201(c)(1), amended par. (3) generally, 
striking out provision that special enrollment period could be period 
beginning with first day of third month before month in which the 
individual attains age of 70 and ending seven months later.
    1984--Subsec. (g)(1). Pub. L. 98-369, Sec. 2354(b)(10), substituted 
``section 426(b) of this title'' for ``section 426(a)(2)(B) of this 
title'' and ``section 1395r(d) of this title'' for ``section 1395(e) of 
this title''.
    Subsec. (i). Pub. L. 98-369, Sec. 2338(b), added subsec. (i).
    1981--Subsec. (e). Pub. L. 97-35, Sec. 2151(a)(1), substituted 
``during the period beginning on January 1 and ending on March 31 of 
each year'' for ``which is any period after the period described in 
subsection (d) of this section''.
    Subsec. (g)(3). Pub. L. 97-35, Sec. 2151(a)(2), substituted ``the 
earlier of the then current or immediately succeeding general enrollment 
period (as defined in subsection (e) of this section)'' for ``the month 
in which the individual files an application establishing such 
entitlement''.
    1980--Subsec. (b). Pub. L. 96-499, Sec. 945(a), struck out subsec. 
(b) which provided that no individual could enroll under this part more 
than twice.
    Subsec. (e). Pub. L. 96-499, Sec. 945(b)(1), substituted ``which is 
any period after the period described in subsection (d) of this 
section'' for ``, after the period described in subsection (c) of this 
section, during the period beginning on January 1 and ending on March 31 
of each year beginning with 1969''.
    Subsec. (g)(1). Pub. L. 96-265 substituted ``the 25th month'' for 
``the 25th consecutive month''.
    Subsec. (g)(3). Pub. L. 96-499, Sec. 945(b)(2), substituted ``the 
month in which the individual files an application establishing such 
entitlement'' for ``the earlier of the then current or immediately 
succeeding general enrollment period (as defined in subsection (e) of 
this section)''.
    1972--Subsec. (b). Pub. L. 92-603, Sec. 260, struck out provisions 
preventing enrollment under this part more than three years after first 
opportunity for such enrollment.
    Subsec. (c). Pub. L. 92-603, Sec. 201(c)(2)(A), (B), substituted 
``paragraph (1) or (2)'' for ``paragraphs (1) and (2)'', and substituted 
provisions relating to the treatment of an individual who has attained 
age 65 and who satisfies paragraph (1) of section 1395o of this title 
but not paragraph (2) of such section, for provisions relating to the 
treatment of an individual who satisfies paragraph (2) of section 1395o 
of this title solely by reason of subparagraph (B) thereof.
    Subsec. (d). Pub. L. 92-603, Sec. 201(c)(2)(C), substituted 
``paragraph (1) or (2)'' for ``paragraphs (1) and (2)''.
    Subsecs. (f), (g). Pub. L. 92-603, Sec. 206(a), added subsecs. (f) 
and (g).
    Subsec. (h). Pub. L. 92-603, Sec. 259(a), added subsec. (h).
    1968--Subsec. (b)(1). Pub. L. 90-248, Sec. 145(a), permitted an 
individual enrolling in supplementary medical insurance program for 
first time to enroll at any time in a general enrollment period which 
begins within 3 years of close of his initial enrollment period.
    Subsec. (d). Pub. L. 90-248, Sec. 136(a), inserted last sentence 
providing that if an individual who has attained age 65 failed to enroll 
in program because, relying on erroneous documentary evidence, he was 
mistaken about his age, he may enroll using date of attainment of age 65 
that he alleges under documentary evidence.
    Subsec. (e). Pub. L. 90-248, Sec. 145(b), provided for an annual 
general enrollment period for supplementary medical insurance program 
beginning January 1 and ending March 31 of each year, commencing in 
1969.
    1966--Subsec. (c). Pub. L. 89-384, Sec. 3(a), delayed eligibility 
date from January 1, 1966, to March 1, 1966, and closing date for 
enrollment period from March 31, 1966, to May 31, 1966.
    Subsec. (d). Pub. L. 89-384, Sec. 3(b), substituted March 1, 1966, 
for January 1, 1966.


                    Effective Date of 1997 Amendment

    Section 4581(c) of Pub. L. 105-33 provided that: ``The amendments 
made by this section [amending this section and sections 1395q and 1395r 
of this title] shall apply to involuntary terminations of coverage under 
a group health plan occurring on or after the date of the enactment of 
this Act [Aug. 5, 1997].''


                    Effective Date of 1994 Amendment

    Section 147(f)(1)(C) of Pub. L. 103-432 provided that: ``The 
amendments made by subparagraphs (A) and (B) [amending this section and 
section 1395q of this title] shall take effect on the first day of the 
first month that begins after the expiration of the 120-day period that 
begins on the date of the enactment of this Act [Oct. 31, 1994].''
    Section 151(c)(2) of Pub. L. 103-432 provided that the amendment 
made by that section is effective as if included in the enactment of 
Pub. L. 103-66.


                    Effective Date of 1989 Amendment

    Amendment by section 6202(b)(4)(C) of Pub. L. 101-239 applicable to 
items and services furnished after Dec. 19, 1989, see section 6202(b)(5) 
of Pub. L. 101-239, set out as a note under section 162 of Title 26, 
Internal Revenue Code.
    Section 6202(c)(3) of Pub. L. 101-239 provided that: ``The 
amendments made by this subsection [amending this section and section 
1395r of this title] shall apply to enrollments occurring after, and 
premiums for months after, the second calendar quarter beginning after 
the date of the enactment of this Act [Dec. 19, 1989].''


                    Effective Date of 1986 Amendments

    Amendment by Pub. L. 99-514 effective, except as otherwise provided, 
as if included in enactment of the Consolidated Omnibus Budget 
Reconciliation Act of 1985, Pub. L. 99-272, see section 1895(e) of Pub. 
L. 99-514, set out as a note under section 162 of Title 26, Internal 
Revenue Code.
    Amendment by Pub. L. 99-509 applicable to enrollments occurring on 
or after Jan. 1, 1987, see section 9319(f)(2) of Pub. L. 99-509, set out 
as a note under section 1395y of this title.
    Section 9201(d)(2) of Pub. L. 99-272 provided that: ``The amendments 
made by subsections (b) and (c) [amending this section, section 1395q of 
this title, and sections 623 and 631 of Title 29, Labor] shall become 
effective on May 1, 1986.''
    Section 9219(a)(3)(B) of Pub. L. 99-272 provided that:
    ``(i) The amendments made by paragraph (2) [amending this section] 
shall apply to enrollments in months beginning with the first effective 
month (as defined in clause (ii)), except that in the case of any 
individual who would have a special enrollment period under section 
1837(i) of the Social Security Act [subsec. (i) of this section] that 
would have begun after November 1984 and before the first effective 
month, the period shall be deemed to begin with the first day of the 
first effective month.
    ``(ii) For purposes of clause (i), the term `first effective month' 
means the first month that begins more than 90 days after the date of 
the enactment of this Act [Apr. 7, 1986].''


                    Effective Date of 1984 Amendment

    Section 2338(d)(2) of Pub. L. 98-369 provided that:
    ``(A) The amendments made by subsections (b) and (c) [amending this 
section and section 1395q of this title] shall apply to enrollments in 
months beginning with the first effective month, except that in the case 
of any individual who would have had a special enrollment period under 
section 1837(i) of the Social Security Act [subsec. (i) of this section] 
that would have begun before such first effective month, such period 
shall be deemed to begin with the first day of such first effective 
month.
    ``(B) For purposes of subparagraph (A), the term `first effective 
month' means the first month which begins more than 90 days after the 
date of the enactment of this Act [July 18, 1984].''
    Amendment by section 2354(b)(10) of Pub. L. 98-369 effective July 
18, 1984, but not to be construed as changing or affecting any right, 
liability, status, or interpretation which existed (under the provisions 
of law involved) before that date, see section 2354(e)(1) of Pub. L. 98-
369, set out as a note under section 1320a-1 of this title.


                    Effective Date of 1981 Amendment

    Section 2151(b) of Pub. L. 97-35 provided that: ``The amendments 
made by this section [amending this section and sections 1395q and 1395r 
of this title] shall not apply to enrollments pursuant to written 
requests for enrollment filed before October 1, 1981.''


                    Effective Date of 1980 Amendments

    Section 945(d) of Pub. L. 96-499 provided that: ``The amendments 
made by subsections (a), (b), and (c) [amending this section and 
sections 1395q and 1395r of this title] shall apply to enrollments 
occurring on or after April 1, 1981.''
    Amendment by Pub. L. 96-265 applicable with respect to hospital 
insurance or supplementary medical insurance benefits for services 
provided on or after the first day of the sixth month which begins after 
June 9, 1980, see section 103(c) of Pub. L. 96-265, set out as a note 
under section 426 of this title.


                    Effective Date of 1972 Amendment

    Section 259(b) of Pub. L. 92-603 provided that: ``The amendment made 
by subsection (a) [amending this section] shall be effective as of July 
1, 1966.''


                    Effective Date of 1968 Amendment

    Section 136(b) of Pub. L. 90-248 provided that: ``The amendment made 
by subsection (a) [amending this section] shall apply to individuals 
enrolling under part B of title XVIII [this part] in months beginning 
after the date of the enactment of this Act [Jan. 2, 1968].''
    Section 145(e) of Pub. L. 90-248 provided that: ``The amendments 
made by subsections (a), (b), and (c) [amending this section and section 
1395q of this title] shall become effective April 1, 1968. 
Notwithstanding the provisions of section 2 of Public Law 90-97, the 
amendments made by subsection (d) [amending section 1395r of this title] 
shall become effective December 1, 1968.''


   Extension Through March 31, 1968 of 1967 General Enrollment Period

    Pub. L. 90-97, Sec. 1, Sept. 30, 1967, 81 Stat. 249, extended the 
general enrollment period under subsec. (e) of this section, beginning 
Oct. 1, 1967, and ending Dec. 31, 1967, for purposes of enrolling in the 
insurance program established under part B of title XVIII of such Act 
[this part] and of terminating such enrollment as provided in section 
1395q(b)(1) of this title, through Mar. 31, 1968.


Enrollment Before Oct. 1, 1966, of Eligible Individuals Failing for Good 
  Cause To Enroll Before June 1, 1966; Commencement of Coverage Period

    Section 102(b) of Pub. L. 89-97, as amended by section 3(c) of Pub. 
L. 89-384, provided that: ``If--
        ``(1) an individual was eligible to enroll under section 1837(c) 
    of the Social Security Act [subsec. (c) of this section] before June 
    1, 1966, but failed to enroll before such date, and
        ``(2) it is shown to the satisfaction of the Secretary of 
    Health, Education, and Welfare [now Health and Human Services] that 
    there was good cause for such failure to enroll before June 1, 1966,
such individual may enroll pursuant to this subsection at any time 
before October 1, 1966. The determination of what constitutes good cause 
for purposes of the preceding sentence shall be made in accordance with 
regulations of the Secretary. In the case of any individual who enrolls 
pursuant to this subsection, the coverage period (within the meaning of 
section 1838 of the Social Security Act [section 1395q of this title]) 
shall begin on the first day of the 6th month after the month in which 
he enrolls.''

                  Section Referred to in Other Sections

    This section is referred to in sections 426, 1395i-2, 1395i-2a, 
1395q, 1395r, 1395v, 1395gg of this title; title 25 section 1644.
