The Hidden Savings of Getting Medication Right in Pharmacy Benefit Management

Key Takeaway: Medication errors in pharmacy benefit management are not just clinical problems. They are also a major source of avoidable cost. In this article, Dr. Martty Martinez-Fraticelli shows how dosing errors, duplicate therapies, and drug interactions often move forward under models built to process claims rather than evaluate them in real time. Earlier clinical review helps protect patients, reduce complications, and lower unnecessary spend.

Some of the most consequential failures in healthcare don’t happen in operating rooms. They happen in the everyday flow of prescribing and dispensing, at the pharmacy counter, across disconnected systems, between providers who aren’t seeing the same picture.

A dose slightly too high. Two therapies that should never be combined. A drug that works, until another one cancels it out.

Each year in the United States, more than 100,000 medication errors are reported to the FDA. Millions more go unreported. The result: as many as 9,000 deaths, over a million people harmed, and more than $40 billion in avoidable cost, much of it tied to problems that could have been caught earlier or prevented entirely.

Today, we have more data than ever before, yet pharmacy remains fragmented. Oversight is often retrospective. Intervention comes too late.

The Limitation of Today’s Pharmacy Benefit Model

Pharmacy is rich in data and poor in coordination. Prescriptions are written in one system, adjudicated in another and reviewed, if they are reviewed, somewhere downstream. By the time a safety problem is identified, the medication has already been dispensed. The patient’s already been exposed. And the system is no longer preventing risk, it’s responding to it.

This is the limitation of most pharmacy benefit models today. They’re built to process transactions efficiently, not to evaluate them clinically in real time. That matters, because many of the most expensive events in healthcare—the hospitalizations, complications, or treatment failures—can often be traced back to small, correctable issues at the point of prescribing or dispensing.

Common drug-related problems include:

• Drug-drug interactions
• Incorrect dosing
• Duplicate therapies
• Misaligned or non-recommended treatment combinations

Where Medication Errors Occur in Pharmacy Benefit Management

To understand where the system begins to break, it helps to look at the kinds of decisions that happen every day, often routine, rarely questioned, and easy to overlook.

• A 58-year-old patient with cardiovascular disease is prescribed clopidogrel to reduce clotting risk. At the same time, he is given omeprazole, an acid-reducing medication known to interfere with how clopidogrel is metabolized. Both prescriptions are common. Together, they reduce the effectiveness of a critical therapy.

• A 33-year-old patient is prescribed Phenergan DM syrup at twice the recommended dose, increasing the risk of respiratory depression and other adverse effects. The prescription is processed as written.

• A 64-year-old patient with a history of congestive heart failure is prescribed both immediate-release and extended-release metoprolol, creating duplication in therapy and unnecessary complexity in management.

• A 41-year-old patient is prescribed a combination of Trulicity and Trijardy XR—a GLP-1 and DPP-4 pairing that clinical guidelines do not recommend.

These cases reflect the kinds of prescribing patterns that occur every day, so common, in fact, that studies have found prescribing errors occur in as many as 41% of outpatient cases. What makes them consequential is how easily they move through the system without being questioned, until the consequences show up somewhere else.

And when they do, the impact is felt on both sides of the equation: the patient assumes the clinical risk, while the plan absorbs the cost of what follows: complications, additional treatments, avoidable utilization.

Real-Time Intervention in Pharmacy Benefit Management

The question isn’t whether these issues exist. It’s whether the system is built to catch them in time.

For years, pharmacy benefit management has functioned as a processing engine. Claims move efficiently, but clinical insight is often applied too late, after a medication has already been dispensed, after the patient has already been exposed.

That timing is where both risk and cost begin. A more effective model shifts protection upstream, bringing clinical intelligence into the moment a prescription is evaluated, at the point of sale, where there is still time to question, adjust, and correct.

At PharmPix, this approach is built into how pharmacy benefits are managed. Our OneArk platform, paired with the HyperCare program, identifies drug-related problems—issues like dosing errors, duplications, and interactions—in real time and enables intervention before they develop into larger clinical or financial consequences.

When those issues are addressed early, the impact is tangible. It shows up in fewer adverse events, fewer escalations in care, and fewer avoidable costs. Clinical programs built around this model have demonstrated pharmacy savings, often in the range of 5% to 25%, by protecting patients and preventing unnecessary utilization for the plan.

This is where the conversation around pharmacy begins to change. Not just what a medication costs, but what happens because of it. The most meaningful savings in healthcare show up in what doesn’t happen: the complication that never occurs, the hospitalization that’s avoided, the therapy that works as intended the first time.

Getting medication right may seem like a small moment. In reality, it’s often the one that determines everything that follows. For organizations rethinking how pharmacy benefits are managed, the question is no longer whether these issues exist, but whether your model is designed to catch them.

FAQs

What medication errors can occur in pharmacy benefit management?

Common problems include drug-drug interactions, incorrect dosing, duplicate therapies and treatment combinations that do not align with clinical guidelines.

Why does real-time pharmacy review matter?

Real-time review occurs before a medication is dispensed, when a pharmacist or prescriber can still evaluate and correct a potential problem. Retrospective review may identify an issue only after the member has already been exposed.

How can medication safety reduce total healthcare costs?

Addressing drug-related problems early can help prevent complications, treatment changes, emergency care and other avoidable costs that may follow an inappropriate prescription.