Selling Dexcom sensors is legally risky and, in many circumstances, outright illegal. Dexcom continuous glucose monitors are classified by the FDA as Class II prescription medical devices, which means they sit in a heavily regulated category with strict rules about who can distribute them. While no single federal law flatly bans one person from handing a sensor to another, the web of federal and state regulations surrounding prescription devices, insurance reimbursement, and distribution licensing makes selling them a legal minefield for individuals.
Why Dexcom Sensors Are Heavily Regulated
The FDA reviewed and classified the Dexcom G6 system as a Class II prescription device. That “prescription” designation is key: it means the device is intended to be obtained through a licensed prescriber and dispensed through authorized channels like pharmacies or durable medical equipment (DME) suppliers. The entire supply chain, from manufacturer to patient, is supposed to flow through entities that hold the proper licenses and registrations.
Individuals don’t hold those licenses. When you buy or receive Dexcom sensors through a pharmacy or DME supplier, you’re the end user. Turning around and reselling them places you in the role of an unlicensed distributor of a prescription medical device, which triggers problems under both federal and state law.
Federal Laws That Apply
The Federal Food, Drug, and Cosmetic Act governs the distribution of medical devices through two relevant sections: Subchapter III, which defines prohibited acts and penalties, and Subchapter V, which covers drugs and devices specifically. Distributing a prescription device outside of authorized channels can constitute a prohibited act under this framework. The penalties vary depending on intent and scale, but they can include both civil fines and criminal charges.
Beyond distribution rules, if your Dexcom sensors were paid for by Medicare, Medicaid, or private insurance, selling them opens the door to fraud charges. The False Claims Act makes it illegal to submit claims for payment to federal health programs that are false or fraudulent. If you received sensors through insurance and then sold them, the original claim that those sensors were for your personal medical use becomes arguably false. Penalties under this law reach up to three times the program’s financial loss plus $11,000 per false claim filed. A criminal version of the same statute can result in prison time.
The Anti-Kickback Statute adds another layer. It prohibits paying or receiving anything of value to generate business involving items payable by federal health programs. Buying someone’s insurance-covered Dexcom sensors for cash, then reselling them, fits squarely within this prohibition. Violations carry fines up to $50,000 per occurrence, jail time, and permanent exclusion from federal health care programs.
State Laws Add More Risk
Many states have their own statutes that go beyond federal requirements. Florida, for example, criminalizes violations of its device distribution laws. A first offense related to unauthorized device sales is a second-degree misdemeanor. A repeat offense escalates to a first-degree misdemeanor, and certain specific violations qualify as third-degree felonies. Other states with large diabetes populations, including California and Texas, maintain their own licensing requirements for anyone distributing medical devices.
The practical reality is that state enforcement varies widely. Some states actively investigate “cash for diabetic supplies” operations, while others focus resources elsewhere. But the legal exposure exists regardless of whether enforcement is aggressive in your area.
What About Giving Them Away?
Donating unused sensors is a grayer area. Several states have laws permitting the donation of unexpired, unopened medical supplies to charitable organizations or directly to other patients. No money changes hands, which removes the fraud and kickback concerns. Some diabetes community groups facilitate these exchanges informally.
That said, even free transfers of prescription devices aren’t explicitly authorized under federal law. The legal risk is dramatically lower than selling, but it’s not zero. If the sensors were insurance-funded, giving them away still raises the question of whether they were obtained under false pretenses if you knew you wouldn’t use them when you ordered the refill.
Online Platforms Prohibit These Sales
If you’re thinking about selling on Facebook Marketplace, eBay, or similar platforms, their policies already block you. Facebook’s commerce policy is explicit: “Commerce content may not promote the buying, selling or trading of medical and healthcare products and services, including medical devices.” Listings for Dexcom sensors get flagged and removed. eBay and Amazon have similar restrictions on prescription medical devices.
Craigslist and smaller forums are harder to police, and you’ll find Dexcom sensors listed on them. The fact that listings exist doesn’t make the sales legal. It just means they haven’t been caught yet.
“Cash for Strips” Companies
You’ve probably seen ads from businesses that buy unused diabetic testing supplies. Some of these operations have expanded to include CGM sensors. These companies present themselves as legitimate recyclers of medical supplies, but their legal standing is questionable. Selling prescription devices to a middleman who then resells them doesn’t insulate you from liability. If the original supplies were insurance-funded, both the seller and the buyer can face scrutiny under federal fraud statutes.
Some of these businesses hold state-level wholesale distribution licenses, which gives them a stronger legal footing than an individual seller. But the person selling to them, typically the patient, rarely has any legal protection in the transaction. If an investigation targets the company, its supplier records become evidence.
Why People Sell and What the Risks Really Look Like
Most people who sell Dexcom sensors aren’t trying to commit fraud. They switched devices, their prescription changed, or they accumulated extras from auto-ship programs. The sensors are expensive (often $300 or more per month without insurance), and it feels wasteful to throw them away when someone else needs them. That’s an understandable impulse, but the law doesn’t carve out a “leftover supplies” exception.
For a one-time, small-scale sale between individuals, the realistic chance of federal prosecution is low. Enforcement agencies focus on organized resale operations, not someone offloading a couple of boxes. But “unlikely to be prosecuted” is different from “legal.” The legal exposure is real, and if your sensors were insurance-funded, the financial penalties for even a small-scale violation can be steep. A single false claim can trigger an $11,000 penalty before the tripled damages are even calculated.
If you have unused Dexcom sensors and want to help someone, connecting with a nonprofit that facilitates medical supply donations is the safest path. If you’re considering selling them for profit, understand that you’re operating outside the law regardless of how common the practice appears online.