(1) “Controlled substance” means a drug, substance or immediate precursor in Schedules I through V of subchapter II of this chapter.

(2) “Fentanyl” means as defined in § 4716(c)(6) of this title.

(3) “Opiate” means any controlled substance having an addiction-forming or addiction-sustaining liability similar to morphine or being capable of conversion into a drug having addiction-forming or addiction-sustaining liability and is a prescription drug.

(4) “Overdose death” means a death caused, in whole or in part, by the consumption or use of a controlled substance.

(5) “Prescription drug” means as defined in § 4701 of this title.