### Question
How does the law define controlled substance?


### Answer
Under *42 U.S.C. § 280g*, **controlled substance** is defined as:

> a controlled substance (as defined in section 802 of title 21) in schedule II, III, or IV of section 812 of such title

#### Citation:
  - *42 U.S.C. § 280g*
  - Heading: **CHAPTER 6A-PUBLIC HEALTH SERVICE > SUBCHAPTER II-GENERAL POWERS AND DUTIES > Part P-Additional Programs**

