The Indian Self-Determination Act, referred to in subsec. (a), is title I of Pub. L. 93–638, Jan. 4, 1975, 88 Stat. 2206, as amended, which is classified principally to part A (§ 450f et seq.) of subchapter II of chapter 14 of this title. For complete classification of this Act to the Code, see Short Title note set out under section 450 of this title and Tables.

The Social Security Act, referred to in subsecs. (a) and (b), is act Aug. 14, 1935, ch. 531, 49 Stat. 620, as amended. Title XVIII of the Act is classified generally to subchapter XVIII (§ 1395 et seq.) of chapter 7 of Title 42, The Public Health and Welfare. For complete classification of this Act to the Code, see section 1305 of Title 42 and Tables.

Prior to general amendment by Pub. L. 102–573, section 401 of Pub. L. 94–437, in subsec. (a) amended sections 1395f and 1395n of Title 42, The Public Health and Welfare, in subsec. (b) enacted section 1395qq of Title 42, and in subsecs. (c) and (d) enacted provisions set out as notes under section 1395qq of Title 42 which were restated in this section.

1992—Pub. L. 102–573 amended section generally, substituting subsecs. (a) and (b) for former subsecs. (a) to (d). See Codification note above.