A prior section 1923 of act July 1, 1944, was classified to section 300x–9b of this title prior to repeal by Pub. L. 102–321.

Another prior section 1923 of act July 1, 1944, was classified to section 300y–2 of this title prior to repeal by Pub. L. 100–690.

2022—Pub. L. 117–328, § 1241(a)(4)(A), substituted “substance use” for “substance abuse” in section catchline.

Subsec. (a). Pub. L. 117–328, § 1241(a)(4)(B), which directed amendment of subsec. (a) by substituting “substance use disorders” for “drug abuse”, was executed by making the substitution both places “drug abuse” appeared, to reflect the probable intent of Congress.

2016—Subsec. (b). Pub. L. 114–255 substituted “to persons who inject drugs” for “regarding intravenous substance abuse” in heading and “for persons who inject drugs” for “for intravenous drug abuse” in text.