CSOS is the only electronic method allowed for ordering Schedule I and II controlled substances.

• A. True
• B. False
• C. Not specified
• D. Only for Schedule III-V substances.

Answer: (A)

CSOS, the Controlled Substances Ordering System, is the electronic path specifically created for ordering Schedule I and II controlled substances. It works as the secure electronic alternative to the old paper DEA Form 222, using digital certificates to verify identity and provide an auditable order trail. The DEA recognizes CSOS as the electronic method for those high-risk schedules, while the paper Form 222 remains available for orders that aren’t submitted electronically. Because of that, the statement that CSOS is the only electronic method allowed for ordering Schedule I and II is correct. It’s worth noting that CSOS does not apply to Schedule III through V in the same way; those substances can be ordered electronically by other means, but CSOS itself is targeted at Schedule I and II.