Controlled Substances and Drug Enforcement
Two layers of law
Controlled substances are governed by federal law (the Controlled Substances Act and DEA regulations) and Arizona law (statute, Board rules, and the Arizona Controlled Substances Prescription Monitoring Program). Where Arizona is stricter, Arizona controls. Questions frequently present a practice that is federally permissible but state-restricted, or vice versa.
Registration and ordering
A pharmacy needs a DEA registration to handle controlled substances, and practitioners need their own registration to prescribe. Schedule II substances are ordered on the required order forms; records must reconcile receipts, dispensing, and destruction. The trap: assuming a state pharmacy registration alone permits controlled-substance handling.
Prescribing and dispensing limits
Schedule II prescriptions cannot be refilled. Schedule III and IV substances have refill limits and time windows. Oral orders are restricted by schedule and setting. Partial fills are permitted in defined circumstances, including patient or prescriber request and LTCF/terminally ill patients, with documentation of the balance. Emergency oral Schedule II orders require written follow-up within the regulatory window.
The PMP
Arizona requires prescribers and dispensers to query and report to the PMP under defined conditions. Dispensing data must be submitted timely. Questions test who must check, when, and what exceptions exist.
Security and loss
Controlled substances must be stored securely, access limited, and theft or significant loss reported to DEA and the Board. Perpetual inventory or equivalent accountability for Schedule II is expected. Diversion by staff is both a criminal and a licensure matter.
Rule of thumb
For any controlled-substance item, run the schedule → refills → form → documentation sequence. If the schedule is Schedule II, the refill answer is almost always zero.
Worked example
A prescriber telephones a Schedule II order for a hospice patient. Emergency oral orders are permitted only within narrow conditions, and the prescriber must furnish a written prescription within the required window; the pharmacist documents the emergency and the follow-up.