Drug Distribution Systems, Inventory Control, and Controlled Substance Accountability
This domain covers how drugs enter, move through, and leave the pharmacy, and how controlled substances are counted and reconciled. Questions often ask which record proves a specific movement.
Purchasing and receiving
- Obtain legend drugs and controlled substances only from appropriately licensed or registered sources (DEA-registered distributors, New York-registered wholesalers). Invoices must identify drug, strength, quantity, date, and source, and are kept with the required records.
- Schedule II transfers between registrants use the DEA 222 form or CSOS; keep the executed copies.
Inventories and counts
- A new registrant takes an initial inventory on the date it begins business; thereafter a biennial inventory is taken on a date the registrant selects. Exact counts are required for Schedule II; estimated counts are acceptable for Schedules III–V unless a container holds more than 1,000 units.
- A perpetual Schedule II count reconciled at shift change is the standard accountability practice; discrepancies are investigated, not overwritten.
Diversion control
- Report theft or significant loss to DEA in writing on Form 106 within one business day of discovery, and to the New York Bureau of Narcotic Enforcement. Use Form 41 for destruction, whether on-site with witnesses or through a reverse distributor.
- Expired, recalled, or adulterated stock is segregated and quarantined until disposition. Never return a dispensed prescription to stock or borrow stock from another pharmacy.
PMP and prescriptions out
- Controlled substance dispensings are reported to the PMP by the next business day; the registry is consulted before dispensing Schedule II–IV.
Worked example
A reconciliation shows 12 tablets of oxycodone 15 mg missing. Recount, review the last shift's dispensing records and CSOS receipts, and if the discrepancy remains, document the investigation and file the loss report rather than adjusting the count sheet to make it balance.
Traps
Reporting a loss to only one agency; estimating Schedule II counts; keeping invoices but not executed CSOS records; assuming a reverse distributor pickup eliminates the need for a destruction record.