7.3 Controlled Substance Prescribing (Chapter 152 + Federal)

7.3 Controlled Substance Prescribing (Chapter 152 + Federal)

Quick Answer: Controlled-substance prescribing is a dual-layer system: federal CSA/DEA rules (legitimate medical purpose, usual course of practice, schedule-specific refill and form rules, EPCS) plus Minn. Stat. ch. 152, especially §152.11. Schedule II: no refills. Schedule III–IV: Minnesota and federal law both cap dispensing/refills at five refills within six months of issue (with documented prescriber consent for refills under MN text). Electronic CS prescribing must meet federal EPCS and Minnesota e-prescribing standards. Pharmacists share corresponding responsibility and must integrate MN PMP checks (detailed in a later chapter). Acute-opiate quantity limits in §152.11, subd. 4 are high-yield Minnesota overlays.

Federal foundations in Chapter 2 taught schedules, Form 222, and federal refill floors. This section is the Minnesota CS prescribing interface you use at the bench and on Area 2/3 MPJE items.

Dual Compliance Model

Every CS prescription must satisfy:

1. Federal validity floor — 21 CFR 1306.04: issued for a legitimate medical purpose by a practitioner acting in the usual course of professional practice; pharmacist has corresponding responsibility
2. Minnesota §152.11 content, schedule-specific, ID, and quantity rules
3. Prescriber authority — practitioner status under §151.01, subd. 23 and current DEA registration for the schedule involved (mid-level authority must also match state practice acts)
4. Examination-based validity for listed high-risk drugs under §151.37, subd. 2(d) when applicable
5. Stricter rule wins — if Minnesota is tighter than federal, answer Minnesota on the MN MPJE

Who May Prescribe CS in Minnesota Practice

§152.11, subd. 1a (CII) and subd. 2 (CIII–IV) describe authorized prescribers as doctors of medicine, osteopathic medicine licensed to practice medicine, dental surgery/medicine, podiatry, and veterinary medicine, lawfully licensed to prescribe in this state or practitioners licensed to prescribe CS by the state where the prescription is issued, each with a current DEA registration number.

Additional nuances:

• Optometrists are addressed for Schedule IV in the CIII/IV subdivision’s limited language—do not assume unlimited optometric CII authority
• APRNs and PAs prescribe CS when their practice acts and DEA registration allow; verify mid-level authority on exam stems rather than assuming MD-only CS prescribing
• Out-of-state CS prescribers can be valid if licensed to prescribe CS where issued and DEA-registered, subject to Minnesota content/dispensing rules

Schedule II — No Refills; Strict Issuance

Federal and Minnesota law agree: no CII refills. §152.11, subd. 1a expressly states no Schedule II prescription may be refilled. Each new supply requires a new prescription (or a properly issued multiple same-day CII prescription set with earliest-fill dates under federal multiple-Rx rules—not “refills”).

Issuance modalities for CII

• Written (ink/printed with handwritten signature) or compliant electronic transmission
• Fax only when federal exceptions apply
• Emergency oral CII only as authorized by federal law: quantity limited to the emergency period; prompt reduction to writing; covering written/electronic prescription within the federal seven-day follow-up window; DEA notification if the covering Rx never arrives

Multiple CII prescriptions

Federally, a practitioner may issue multiple CII prescriptions on the same day authorizing up to a 90-day total supply if each is a legitimate separate prescription, contains earliest fill dates, and the prescriber concludes multiple Rxs do not increase abuse risk. These are not refills.

Schedule III and IV — Five Refills / Six Months

§152.11, subd. 2 aligns with the classic federal rule:

• No CIII/IV CS may be dispensed or refilled except with the documented consent of the prescriber
• In no event more than six months after the date of issue
• No such prescription may be refilled more than five times

After five refills or six months—whichever comes first—a new prescription is required. Partial fills of CIII–IV count against the total authorized quantity within the six-month window (federal partial-fill rules).

Schedule V

Schedule V products remain controlled. Federal refill rules for CV are more flexible than the hard 5/6 CIII–IV cap, but Minnesota still treats CV as CS for content, ID, recordkeeping, and PMP reporting. Never treat CV as “basically OTC” on the MPJE.

Electronic Prescribing of Controlled Substances (EPCS)

Electronic CS orders are void under §152.11, subd. 1(b) unless they comply with:

• Minnesota §62J.497 e-prescribing standards, and
• Federal EPCS security rules (identity proofing, two-factor authentication, certified application, audit trail)

EPCS is preferred in many health systems and may be required by payer or institutional policy; know the compliance test: not every “electronic message” is a valid EPCS prescription.

Corresponding Responsibility in Minnesota Practice

Corresponding responsibility means you cannot hide behind a DEA number and a signature. Practical CS red flags include:

• Early refill patterns without clinical explanation
• Cash payment for high-dose opioids from distant clinics
• Cocktail prescriptions (opioid + benzodiazepine + carisoprodol)
• Altered quantities or multiple pharmacy shopping patterns
• Prescriber writing outside specialty with no exam relationship

Actions: verify DEA and identity, contact prescriber, review MN PMP (see Chapter 10), document, and refuse when legitimacy fails. Partial filling a clearly illegitimate opioid to “avoid conflict” is still a violation.

Minnesota Acute Opiate Quantity Limits — §152.11, subd. 4

When used for acute pain, prescriptions for opiates/narcotic pain relievers in Schedules II–IV shall not exceed:

• Seven-day supply for an adult
• Five-day supply for a minor under 18

For acute dental pain (including wisdom teeth extraction) or acute pain associated with refractive surgery, the limit is a four-day supply.

Acute pain means pain from disease, trauma, surgery, or another cause that the practitioner reasonably expects to last only a short time. It excludes chronic pain and pain treated as part of cancer care, palliative care, hospice, or other end-of-life care.

Clinical override: if professional clinical judgment requires more than the limit to treat the patient’s acute pain, the practitioner may issue a prescription for the quantity needed. Exam items often test the default limits first; watch for language that triggers the override.

Photo ID and Labeling

• §152.11, subd. 2d photo ID at purchase (unless known)
• §152.11, subd. 1(e) requires the CS container label to bear the directions from the prescription

PMP Interplay (Cross-Reference)

Minn. Stat. §152.126 requires PMP reporting and creates use expectations for Minnesota pharmacists. Operational details—registration, when to query, what is reported (Schedules II–V, butalbital, gabapentin)—belong to the PMP chapter. For prescribing validity, treat unexplained CS patterns on the PMP as corresponding-responsibility data, not optional background noise.

Worked Example

A 34-year-old pays cash for oxycodone 30 mg #120 with directions “1–2 tabs q4h PRN,” written by an out-of-state pain clinic the patient has never visited in person, with no covering diagnosis narrative and a PMP showing three other pharmacies filled similar scripts this month. Even if every blank on the Rx form is complete, legitimate medical purpose and §151.37 exam-based validity are in doubt. The correct sequence is verify, contact, PMP review, document, and refuse if legitimacy cannot be established—not “fill half to be nice.”

Common Exam Traps

• Allowing CII “refills”
• Applying 5/6 only to CII or forgetting it for CIII/IV
• Ignoring Minnesota acute opiate day-supply limits
• Treating EPCS as optional free-text email
• Forgetting corresponding responsibility when the form looks complete
• Demanding DEA numbers on non-CS prescriptions

Study Checklist

1. State CII no refill and emergency oral follow-up timing
2. Apply CIII–IV 5 refills / 6 months under §152.11
3. Recite adult/minor/dental-refractive acute opiate limits and the clinical override
4. Define corresponding responsibility in one sentence
5. Cross-link CS validity to PMP and §151.37 exam rules without dumping full PMP operations here

CS prescribing is where federal schedule math meets Minnesota statute—master both layers.