4 Controlled-Substance Prescriptions and Dispensing

Legal standards and responsibility

Federal controlled-substance prescription rules set minimum standards for prescribing and dispensing. State law may impose stricter requirements, so pharmacists must follow both applicable federal and state law. The requirements covered here are federal requirements and do not include every state-specific rule.

A controlled-substance prescription must be issued for a legitimate medical purpose by a practitioner acting in the usual course of professional practice. The prescriber is responsible for proper prescribing, and the pharmacist who fills the prescription has a corresponding responsibility for proper dispensing.

Required prescription information

Federal regulations generally require a controlled-substance prescription to include:

• The date issued.

• The patient’s full name and address.

• The drug name, strength, dosage form, quantity, and directions.

• The practitioner’s name, address, and DEA registration number.

A paper prescription must be signed by the practitioner. A valid-looking signature alone does not establish that the prescription is legitimate. For example, if the quantity or directions appear inconsistent with the patient’s treatment, the pharmacist should assess the concern before dispensing.

Prescription forms by schedule

The permitted prescription form depends on the schedule of the controlled substance. Federal rules generally allow more prescription forms for Schedules III–V than for Schedule II.

• Schedule II: Generally requires a written, manually signed prescription or a compliant electronic prescription. An oral prescription is allowed only in a qualifying emergency. Federal rules do not require electronic prescribing in every case, although state law may.

• Schedules III–V: May generally be prescribed by signed paper, compliant electronic prescription, or oral order. The pharmacist must promptly reduce an oral prescription to writing with the required information.

A Schedule II emergency oral prescription is limited to the amount needed to treat the patient during the emergency period. The pharmacist documents the order. The prescriber must provide a signed prescription for the emergency quantity within seven days, marked “Authorization for Emergency Dispensing.”

Refill limits

A Schedule II prescription cannot be refilled. A practitioner may issue multiple separate Schedule II prescriptions for a total of up to a 90-day supply if each prescription is for a legitimate medical purpose, includes any required earliest-fill date, and complies with state law and the other federal conditions. This is permission, not a requirement to prescribe a 90-day supply at a time.

Schedules III and IV may be refilled only when authorized by the prescriber, up to five times within six months of the issue date. Schedule V has a different federal refill rule; do not automatically apply the Schedule III–IV limit to Schedule V. Confirm the applicable federal and state requirements.

Schedule II partial fills

A Schedule II partial fill is not a refill. Federal rules permit Schedule II partial fills under specified conditions.

When the pharmacy cannot supply the full quantity, the remainder generally must be dispensed within 72 hours of the first partial fill. If it cannot be dispensed within that period, the prescriber must be notified, and a new prescription is needed for any further quantity.

Separate federal rules permit patient- or prescriber-requested partial fills. In these cases, the remaining quantity generally has a 30-day deadline. These rules apply under their specified conditions.

Transfers between pharmacies

Federal rules distinguish transfers for refill dispensing from transfers for initial filling.

Transfer for refill dispensing

An eligible Schedule III–V prescription may generally be transferred between pharmacies once for refill dispensing. Pharmacies sharing a real-time, online database may transfer the information as allowed by federal rules. The transfer must be communicated directly between pharmacists and properly documented.

Transfer for initial filling

A compliant electronic prescription for a Schedule II–V drug may be transferred once between DEA-registered retail pharmacies for initial filling, at the patient’s request. The prescription must remain electronic and unaltered, and the transfer must be communicated directly between pharmacists.

These are distinct permissions. A Schedule II prescription cannot be refilled, but a qualifying electronic Schedule II prescription may be transferred once for initial filling. State law may be more restrictive.

The pharmacist’s dispensing check

Before dispensing, the pharmacist should confirm that the prescription is complete and legally permissible, that the prescriber is authorized, and that the prescription appears consistent with legitimate treatment. If something raises concern, the pharmacist should make a reasonable inquiry and document relevant steps according to applicable requirements and policy.

If a concern remains unresolved, the pharmacist should not dispense. The pharmacist’s corresponding responsibility is not satisfied merely by accepting the prescriber’s order.

• Refill transfer

• Initial-filling transfer

• Schedule III–IV refill limit