5.3 Controlled Substance Prescriptions: Schedules II–V, EPCS, Emergency Orders & Oregon's CV Limit

Why this matters

Controlled substance prescriptions are a large part of the MPJE. Oregon follows the federal CSA framework through ORS 475.185 and OAR 855-080-0085, which adopts 21 CFR by reference, and adds stricter limits. The most important Oregon difference is that Schedule V prescription drugs are capped at 6 months and 5 refills, like Schedules III and IV.

Elements of a controlled substance prescription

Federal rule 21 CFR 1306.05 requires the prescription to be dated and signed on the day it is issued, and to contain:

• The patient's full name and address.
• The drug's name, strength, dosage form and quantity.
• Directions for use.
• The practitioner's name, address and DEA registration number.

Oregon adds the patient's date of birth and the prescriber's phone number (OAR 855-041-1105). Signature rules (OAR 855-041-1105(2)(g)(B)):

Agents may prepare a controlled substance prescription for the prescriber's signature, but only the prescriber may sign it.

Schedule II rules

• Written or electronic prescription required (ORS 475.185(1); 21 CFR 1306.11(a)). No refills.
• Fax as the original is allowed only for:
  1. A Schedule II narcotic compounded for home infusion or IV pain therapy.
  2. Any Schedule II drug for a long-term care facility (LTCF) resident.
  3. A Schedule II narcotic for a hospice patient, certified by Medicare or licensed by the state.
• Multiple prescriptions (21 CFR 1306.12(b)): a practitioner may issue several Schedule II prescriptions on the same day for up to a 90-day supply. Each must bear the actual issue date and written instructions for the earliest fill date, and the practitioner must find no undue risk of diversion.
• No federal or Oregon expiration date applies to Schedule II prescriptions. A pharmacist presented with a months-old order uses corresponding responsibility, covered in section 5.5.

Emergency oral Schedule II orders (21 CFR 1306.11(d); ORS 475.185(1)(b))

In a true emergency, meaning immediate administration is needed, no appropriate alternative exists, and a written order cannot be provided first, a pharmacist may dispense on an oral order. The conditions are:

1. The quantity is limited to the amount adequate to treat the patient during the emergency period.
2. The pharmacist immediately reduces the order to writing with every required element except the signature.
3. The pharmacist makes a reasonable effort to verify an unknown prescriber, for example by calling back on a published number.
4. Within 7 days, the prescriber delivers a written or electronic prescription marked "Authorization for Emergency Dispensing" with the date of the oral order. A mailed prescription must be postmarked within the 7 days.
5. If it does not arrive, the pharmacist must notify the nearest DEA office. Failing to do so voids the authority under which the drug was dispensed.

Oregon has no separate shorter deadline. The federal 7-day rule applies through OAR 855-080-0085.

Schedules III, IV and V

Changing a controlled substance prescription

The patient's name, the controlled substance prescribed (except a permitted generic substitution) and the prescriber's signature can never be changed. A wrong patient name, a missing signature or a different drug requires a new prescription. Other defects, such as strength, dosage form, quantity, directions or a missing DEA number, may be clarified with the prescriber, with the conversation documented. Under OAR 855-041-1115, any unauthorized alteration makes a written order invalid.

Oregon scheduling notes

• Oregon's schedules generally track the federal schedules (OAR 855-080-0021 to -0026). Schedule I adds state-specific structural classes.
• Pseudoephedrine and ephedrine are Schedule V in Oregon. They may be sold without a prescription only under ORS 475.230 (Chapter 9).
• Gabapentin is not scheduled, but Oregon requires PDMP reporting for it (ORS 431A.855).
• Federal marijuana status changed in 2026. A final order signed April 22, 2026 moved FDA-approved marijuana drug products and marijuana handled under a state medical-marijuana license to Schedule III. Adult-use marijuana remains Schedule I, and broader rescheduling was paused in late September 2026. Psilocybin remains federally Schedule I, although Oregon licenses psilocybin services under ORS chapter 475A. Pharmacies do not dispense marijuana items or psilocybin.

Exam scenario

On Friday evening a hospice physician phones in hydromorphone 2 mg #20 for a home-hospice patient in a pain crisis. The pharmacist reduces the order to writing and dispenses an amount adequate for the emergency period. The written prescription marked "Authorization for Emergency Dispensing" is due within 7 days. If it never arrives, the pharmacist must notify DEA. Separately, a prescription for hydromorphone for a hospice patient may be faxed as the original if the faxed document carries the prescriber's manual signature.