### Question
How is the term controlled substance defined?


### Answer
The term **controlled substance** is defined in *42 U.S.C. § 1396w* as the following:

> a drug that is included in schedule II of section 812(c) of title 21 and, at the option of the State involved, a drug included in schedule III or IV of such section

#### Citation:
  - *42 U.S.C. § 1396w*
  - Heading: **CHAPTER 7-SOCIAL SECURITY > SUBCHAPTER XIX-GRANTS TO STATES FOR MEDICAL ASSISTANCE PROGRAMS**

