What drugs are most commonly diverted in hospitals and pharmacies?

Opioids — including fentanyl, hydromorphone, oxycodone, and morphine — are the most frequently diverted controlled substances in healthcare settings because of their high abuse potential and widespread presence in hospital formularies. Benzodiazepines, stimulants (such as amphetamines), and certain sedative-hypnotics are also diverted at significant rates. Non-controlled substances with abuse or resale value are occasionally diverted as well, though DEA recordkeeping and accountability requirements create stronger deterrents for scheduled drugs.

How is drug diversion detected in healthcare facilities?

Diversion is detected through a combination of methods: automated data analytics that flag statistical anomalies in waste, override, and dispense patterns; physical inventory counts and reconciliation that reveal quantity discrepancies; direct observation and peer reports; and investigation of behavioral red flags in individual employees. The most effective programs layer multiple detection methods, since diversion that evades one layer is often caught by another.

Who investigates drug diversion in a hospital or pharmacy?

Internal investigations are typically led by the pharmacy diversion prevention program, often in partnership with human resources, legal counsel, and security. When investigation findings suggest criminal conduct or when a DEA Form 106 reportable theft or significant loss is identified, the DEA Diversion Control Division is the primary federal investigative authority. State boards of pharmacy and state law enforcement may also become involved, depending on the jurisdiction and the nature of the diversion.

What happens when a healthcare employee is caught diverting drugs?

Consequences depend on the severity of the diversion, the applicable state law, the facility's policies, and whether the employee self-reported or was discovered through investigation. Outcomes range from employment termination and state board reporting to criminal prosecution for drug theft. Facilities are generally required to report licensed healthcare professionals who divert controlled substances to the applicable state licensing board. DEA registration, where applicable, may be surrendered or revoked. Many individuals with substance use disorders underlying their diversion are offered referral to treatment programs, though employment consequences typically proceed in parallel.

What Is Drug Diversion in Healthcare? Definition,…

Q: How common is drug diversion in healthcare?

Drug diversion is recognized as a widespread problem in healthcare settings, including hospitals, pharmacies, nursing homes, and outpatient clinics. Because most diversion goes undetected for a period before discovery — and because organizations have historically underreported — precise prevalence figures are difficult to establish. What is clear is that virtually every type and size of healthcare facility is at risk, and programs that invest in active surveillance routinely find more diversion than those that rely on passive reporting.

Drug diversion in healthcare refers to the unauthorized redirection of a medication away from its intended patient to someone or something else. In a hospital or pharmacy, that means a controlled substance prescribed for a patient ends up being stolen, tampered with, or used by someone who was not the intended recipient — most often a healthcare worker with access to the medication supply chain. Understanding what diversion is, how it happens, and what warning signs look like is the foundation of any prevention program.

A Plain-Language Definition

Drug diversion occurs when a controlled substance (or other medication with abuse or resale value) is taken for a use other than its authorized patient-care purpose. In a healthcare facility context, this broadly includes:

Theft — physically removing a controlled substance from its point of storage or custody
Tampering — replacing a legitimate drug with a substitute (water, saline, another substance) while leaving the original packaging intact, so the theft is not immediately obvious
Waste falsification — documenting that a drug was wasted in front of a witness when it was not, allowing the documenter to keep or use the drug
Prescription fraud — generating unauthorized or forged prescriptions to obtain controlled substances for personal use or resale
Patient-diversion — redirecting a drug that was legitimately prescribed for a patient but intercepted before it reached the patient

The unifying characteristic is that a medication intended for patient care ends up somewhere else — in a healthcare worker's pocket, in an unauthorized person's hands, or destroyed but not honestly documented. The patient does not receive what they were supposed to receive.

How Diversion Happens in Healthcare Settings

Diversion exploits the gaps and opportunities that exist wherever controlled substances move, are stored, or are administered. The most common methods in hospital and pharmacy settings include:

Theft from medication dispense cabinets: Accessing medications beyond what is needed for the current patient, using legitimate access credentials to pull extra doses, or accessing medications for patients not under one's care.
Waste falsification: Withdrawing a full dose from a medication dispense cabinet, administering a partial dose (or no dose) to the patient, and falsely documenting that the remainder was wasted. This is the most common method of diversion by nurses and anesthesia providers.
Tampering: Replacing the contents of a vial, syringe, or IV bag with an inert substance while leaving the external appearance intact. Patients who receive tampered medications receive no drug effect — or, more dangerously, receive a potentially harmful substitute. Tampering is the method most directly associated with patient harm and bloodborne disease transmission.
Prescription fraud: Healthcare professionals with prescribing authority may write prescriptions for controlled substances in patients' names (without clinical justification) or under falsified information, then fill those prescriptions for personal use. Pharmacy technicians may access the dispensing system to generate fraudulent dispense records.
Returns manipulation: Falsifying documentation of returned medications to patient care units or reverse distributors to create a paperwork surplus that the diverter can then physically take.

Who Is Typically Involved

Diversion is committed by individuals who have legitimate authorized access to controlled substances as part of their professional role. The individuals most commonly identified in healthcare diversion cases include:

Nurses — who have bedside access to medications, administer doses, and document waste. Nurses represent the largest single professional category in identified healthcare diversion cases, by virtue of their direct patient care role and the volume of controlled substance transactions they handle daily.
Pharmacy technicians — who handle controlled substance receiving, counting, filling, and returns in the dispensing environment.
Anesthesia providers — who prepare and administer high-concentration controlled substances in the operating room with limited real-time oversight.
Pharmacists — who have broad access to controlled substance storage and ordering systems.
Physicians and other prescribers — who may exploit prescribing authority to generate unauthorized prescriptions.

Diversion is not limited to individuals with known substance use histories. Clinicians with no prior behavioral indicators divert for reasons including active addiction, financial distress, and personal use outside a formal addiction pattern. The absence of a visible risk factor does not mean a person cannot divert.

Why Healthcare Professionals Divert

The motivations behind healthcare diversion vary but broadly fall into several categories:

Addiction and substance use disorder: The most common driver. Healthcare professionals with opioid or other substance use disorders often divert primarily to supply their own use. Addiction is a disease, and the clinical environment provides access that makes self-supply possible for those who develop dependency.
Financial motivation: Some controlled substances have street value, and a small number of diversion cases involve theft for resale rather than personal use.
Personal use without a formal addiction diagnosis: Recreational use, self-treatment of pain or anxiety, or use of stimulants for performance enhancement outside a formal addiction pattern.
Diverting for another person: Occasionally, a healthcare professional steals medications to supply a family member, partner, or close contact with a substance use disorder.

Impact on Patients

The patient harm potential from healthcare diversion ranges from under-treatment of pain to direct physical harm:

Under-treatment: A patient whose pain medication was diverted before administration receives inadequate analgesia. In surgical and intensive care settings, this represents real clinical harm, not just a documentation problem.
Disease transmission: Tampering diversion — where a diverter withdraws medication from a vial and replaces it with a contaminated substance — has caused healthcare-associated outbreaks of bloodborne pathogens including hepatitis C when the diverter uses the same needle or syringe for their own injection and then reseals or re-fills the vial. These outbreaks represent some of the most serious patient safety consequences of healthcare diversion.
Administration of a substitute: A patient who receives saline instead of fentanyl during a painful procedure suffers inadequate anesthesia. A patient who receives a contaminated substitute may suffer a direct toxic or infectious harm.

The Role of the Diversion Prevention Program

A diversion prevention program exists to create an environment where diversion is difficult to carry out, likely to be detected, and consistently investigated when identified. The program's core functions are deterrence (making potential diverters aware that surveillance is active), detection (identifying diversion when it occurs), investigation (establishing what happened and who was responsible), and remediation (addressing the root cause and closing the gaps that allowed diversion to occur).

For a structured overview of what a complete program requires, see our 10 components of a diversion prevention program guide. For how organizations detect diversion at scale — the software categories and what they can and can't prove — see our drug diversion monitoring software guide.

Warning Signs to Monitor

Healthcare diversion rarely occurs without producing some observable signal. The warning signs fall into behavioral, documentation, and inventory categories:

Volunteering for extra shifts or insisting on handling medications without assistance
Refusing to take breaks during shifts or leaving the medication area infrequently
Documenting waste without a witness present, or co-signing waste without direct observation
High rates of dispense transactions relative to peers covering similar patient populations
Frequent medication override transactions without documented clinical justification
Inventory discrepancies concentrated around specific shifts, access points, or individuals
Patient complaints about inadequate pain control following administration by a specific provider

For a full list of 15 behavioral, documentation, and inventory red flags, see our medication diversion red flags guide.

Frequently Asked Questions

How common is drug diversion in healthcare?

Drug diversion is recognized as a widespread problem across healthcare settings. Because much diversion goes undetected for a period before discovery — and organizations have historically underreported — precise prevalence figures are difficult to establish. Programs that invest in active surveillance routinely find more diversion than those that rely on passive reporting alone.

What drugs are most commonly diverted?

Opioids — fentanyl, hydromorphone, oxycodone, and morphine — are the most frequently diverted controlled substances in healthcare settings. Benzodiazepines, stimulants, and certain sedative-hypnotics are also diverted at meaningful rates. DEA scheduling creates stronger accountability requirements for scheduled substances, but those requirements do not eliminate diversion opportunity.

How is diversion detected?

Detection requires layered methods: data analytics flagging statistical anomalies, physical inventory reconciliation revealing quantity discrepancies, peer observation and reports, and investigation of behavioral red flags. No single method catches all diversion — effective programs combine multiple approaches.

Who investigates drug diversion?

Internal investigations are led by the diversion prevention program, in coordination with pharmacy, HR, legal, and security. For reportable theft or significant loss, the DEA Diversion Control Division is the primary federal investigative authority. State boards of pharmacy and law enforcement may also become involved.

What happens when a diverter is caught?

Consequences include employment termination, mandatory state licensing board reporting, and potential criminal prosecution for drug theft. Facilities are generally required to report licensed professionals to the applicable state board. DEA registration may be surrendered or revoked. Many programs also offer referral to substance use disorder treatment, though employment consequences typically proceed in parallel.

What Is Drug Diversion in Healthcare? Definition, Examples & Warning Signs