### Question
What is the definition of controlled substance?


### Answer
The definition of **controlled substance** is as follows in *42 U.S.C. § 9919*:

> given the term in section 802 of title 21.

#### Citation:
  - *42 U.S.C. § 9919*
  - Heading: **CHAPTER 106-COMMUNITY SERVICES BLOCK GRANT PROGRAM**

