Federal Requirements
Core concepts
Know the Controlled Substances Act schedules I–V, DEA registration, and federal recordkeeping. Schedule II has no refills; schedules III–IV allow up to five refills within six months of the issue date; schedule V refills follow state law. Understand DEA Form 222/CSOS for CII ordering, biennial inventory, theft/loss reporting, and secure storage. Also know HIPAA minimum necessary, FDA recall classes, DSCSA transaction documentation, REMS, and Poison Prevention Packaging Act requirements.
Traps
Questions mix refill count with time limit, or federal with stricter state rules. A CIII prescription written January 1 can have at most five refills and cannot be filled after June 30. Emergency CII dispensing requires specific follow-up. CII transfers are generally limited; CIII–V transfer rules depend on state law and DEA guidance. Do not confuse a partial fill with a refill. Recall Class I means reasonable probability of serious harm or death; Class II temporary/reversible; Class III unlikely harm.
Worked example
A prescriber writes a schedule III order on March 1 with “refill PRN.” Federal limits: maximum five refills, and all refills must occur within six months of the issue date-so the last permissible fill date is August 31, provided the fifth refill has not already been used. Check both the count and the calendar.
Rule of thumb
For CIII–IV, remember 5 refills / 6 months, whichever comes first. Always apply the stricter of federal or state law.