### Question
How is the term encephalopathy defined?


### Answer
The term **encephalopathy** is defined in *42 U.S.C. § 300aa* as the following:

> any significant acquired abnormality of, or injury to, or impairment of function of the brain

#### Citation:
  - *42 U.S.C. § 300aa*
  - Heading: **CHAPTER 6A-PUBLIC HEALTH SERVICE > SUBCHAPTER XIX-VACCINES > Part 2-National Vaccine Injury Compensation Program > subpart a-program requirements**

