Yes, it's legal to sell unused, personally-purchased Dexcom sensors in the United States. If you paid out-of-pocket or through private insurance, own the box outright, and the supplies are factory-sealed and unexpired, you're on solid legal ground. What makes a sale illegal is a different set of facts: supplies paid for by Medicare, Medicaid, the VA, or another federal program can't be resold, no matter how many boxes you have.
That short answer covers most people who reach out to us. The longer answer, the one worth understanding before you ship anything to any buyer, comes down to three legal frameworks working together: federal law, the first-sale doctrine, and state-specific rules that occasionally add extra steps. This guide walks through each of them so you can sell your extra Dexcom supplies with confidence, or know for certain when you can't. If you'd rather skip ahead and see what your specific supplies are worth right now, our Dexcom collection page lists current payout rates by product.
ValueCGM has been buying diabetic supplies for 15 years. We're BBB accredited, we hold 900+ five-star reviews on Trustpilot, and we've built that record in part by refusing to buy a single box we're not legally allowed to buy. That compliance line protects you as much as it protects us.
What Federal Law Actually Says About Selling CGMs
No federal statute prohibits a private individual from reselling a Dexcom sensor they own outright. Dexcom sensors are FDA-regulated medical devices, and the FDA's authority under the Federal Food, Drug, and Cosmetic Act covers manufacturing, labeling, and commercial distribution. It does not reach into private, secondary sales of sealed products by individual owners.
The regulatory direction over the past two years has been toward broader access, not tighter restriction. In March 2024, the FDA cleared Dexcom's Stelo Glucose Biosensor System as the first over-the-counter continuous glucose monitor for adults not on insulin. The agency later expanded that OTC clearance to children. When a category of medical device becomes available without a prescription at all, the case for restricting private resale of already-sealed inventory gets weaker, not stronger.
What supports your right to resell is a much older principle called the first-sale doctrine. Once you've lawfully purchased a product, you generally have the right to resell it. It's the same principle that lets you sell a used car, a phone, or an unopened bottle of over-the-counter medicine at a garage sale. Ownership transfers the right to resell, subject to a few important exceptions we cover below.
The Three Rules That Determine Whether Your Sale Is Legal
Every legitimate Dexcom sale rests on three questions.
1. Who paid for the supplies?
This is the question that trips up the most sellers. If you paid out-of-pocket or through private insurance, including an employer plan or an Affordable Care Act marketplace plan, the supplies are yours to resell. If Medicare, Medicaid, TRICARE, CHAMPVA, or another federal or state health program paid for them, you cannot resell them. Doing so exposes you to risk under federal fraud and abuse statutes, including the Anti-Kickback Statute at 42 U.S.C. § 1320a-7b and related civil penalty provisions.
Copays don't change the analysis. If Medicare paid $190 for the box and you paid a $10 copay, the box was funded by Medicare and cannot be resold. The rule is about the source of funding, not who wrote the last check at the pharmacy counter.
2. Are the supplies unopened and unexpired?
Only factory-sealed boxes with meaningful shelf life left qualify. ValueCGM requires at least 3 months to expiration, factory seal intact, and no writing, tape, or damage on the outer box. Opened, expired, or short-dated supplies aren't just off-limits at our door. They may violate state consumer-protection statutes if sold at all.
3. Are the supplies free of restricted-distribution labeling?
Manufacturer sample kits, "NOT FOR RESALE" boxes, institutional-use packaging, and DME-channel Dexcom boxes are distributed under agreements or programs that specifically limit resale. If any of those markings appear on your box, the sale isn't legal regardless of how you personally paid for the item.
When It's Absolutely Not Legal to Sell Your Dexcom Sensors
The clearest illegal-sale scenarios are the ones we turn away every week:
-
Medicare-paid supplies. Whether covered under Part B (durable medical equipment channel) or Part D (pharmacy benefit), Medicare-funded Dexcom sensors are not yours to resell.
-
Medicaid-paid supplies. Any Dexcom sensors dispensed under a state Medicaid program fall into the same category.
-
VA-issued supplies. Sensors dispensed by the Department of Veterans Affairs cannot be resold.
-
TRICARE, CHIP, or other federal-program supplies. Same rule.
-
Opened, expired, damaged, or short-dated boxes. Even if you paid cash, we can't buy these, and no reputable buyer will either.
-
Anything labeled "NOT FOR RESALE," "SAMPLE," or "NFR." Manufacturer sample kits move under agreements that specifically prohibit resale.
Our post on Avoiding Scams When Selling Dexcom Supplies walks through what a legitimate buyer's compliance intake looks like, and what to watch for when a buyer isn't asking these questions.
The Real-World Scenarios Where Selling Is Clearly Legal
Every week we see the same handful of stories, and every one of them falls squarely inside the legal line.
You upgraded from Dexcom G6 to G7 and have three unopened G6 boxes sitting in a drawer. You paid for them through your commercial insurance plan. That's a legal sale.
Your endocrinologist switched you from Dexcom to FreeStyle Libre after your last A1C reading. You had two G7 3-packs left from your last pharmacy refill, paid out-of-pocket after your deductible. Legal sale.
A parent passed away, and among their supplies were four unopened Dexcom G6 boxes purchased through their private employer plan. As long as those were not Medicare-funded, the estate can sell them.
You bought a Dexcom Stelo three-pack over the counter at a pharmacy and decided the daily insight wasn't for you. Sealed, unexpired, cash purchase. Legal sale.
Your insurance changed effective January 1 and your new plan requires a different CGM. The remaining Dexcom sensors from your prior coverage year, if they were dispensed through the pharmacy benefit and not through Medicare or Medicaid, are yours to sell.
You have a family member who was newly diagnosed and received free trial sensors from their endocrinologist's office in a starter kit. Those sample kits are labeled "NOT FOR RESALE" and cannot be sold. Anything dispensed by the pharmacy on that same person's private insurance in the weeks that followed can be sold if unused.
State-Level Variance You Should Know About
Federal law sets the floor. A few states add rules on top.
The state-by-state variance is real but rarely a blocker for private sellers. Most states treat unused, unexpired diabetic supplies the same way federal law does. A handful of states apply consumer-protection statutes to medical device resale that add extra requirements, and those requirements almost always fall on commercial buyers rather than individual sellers. Nevada, Tennessee, and Wyoming, for example, treat diabetic test strips as taxable for individual purchasers rather than exempt medical equipment, which affects sales tax at retail but doesn't restrict private resale.
A few practical notes on state-level considerations:
Business licensing. Most states require commercial buyback companies to hold appropriate business licenses. That's on us as a buyer, not on you as a seller.
Sales tax at resale. Sales tax rules apply to the buyer's transaction with the eventual end purchaser, not to your sale to the buyback company. You don't collect sales tax when you sell your unused supplies.
Income tax. Occasional personal-property sales are generally not taxable income. If you're selling a large quantity regularly, a tax professional can advise on your specific situation. We aren't tax advisors and can't give guidance beyond that general framing.
State-specific inspection rules. No state we know of prohibits an individual from selling an unused, sealed CGM box that meets the federal criteria above. If you have questions specific to your state, a call to your state's Department of Health or Attorney General consumer-protection line will confirm the current position in about ten minutes.
If you're selling to a licensed, compliant buyer, most of the state-level burden shifts to them. That's part of what you're evaluating when you look at a buyback company's credentials: track record, BBB accreditation, published compliance policy, and clear intake questions about how your supplies were funded.
A Simple Compliance Flowchart Before You Sell
Before you box anything up, walk through these five questions in order.
Question 1. Was the box paid for out-of-pocket or by private insurance? Yes: move to Question 2. No (Medicare, Medicaid, VA, or another federal program paid): stop. You can't sell these.
Question 2. Is the box factory-sealed with the manufacturer's original seal intact? Yes: move to Question 3. No (opened, damaged, resealed): stop.
Question 3. Is the expiration date at least 3 months out? Yes: move to Question 4. No: stop.
Question 4. Is the box free of "NOT FOR RESALE," "SAMPLE," "NFR," or restricted-distribution labels? Yes: move to Question 5. No: stop.
Question 5. Does the box come from a retail or mail-order pharmacy channel (not DME)? Yes: you're clear to sell. No: the box was likely dispensed through a Medicare-adjacent channel and can't be resold.
Working through those five questions takes about 30 seconds and eliminates most of the legal risk in a sale. Our post on Best Practices for First-Time Dexcom Sellers has a longer checklist for anyone selling for the first time.
How ValueCGM's Compliance Framework Protects You
Every box we receive goes through a documented compliance intake before we release a payment. We verify the NDC or REF number matches an eligible retail or pharmacy-channel Dexcom product. We check the seal, the expiration date, and the outer packaging for tampering or restricted-distribution labels. We ask sellers to confirm the funding source at quote submission, and we retain that record.
The intake exists for three reasons.
First, it protects sellers. When your supplies pass our compliance intake, you can sell them without spending the next six months wondering whether you were allowed to. The record we retain shows that the funding source was disclosed, the box was verified, and the transaction was documented on both sides.
Second, it protects the secondary market. Every box we buy is resold to an end purchaser who wants to know the product they're receiving is sealed, unexpired, and legitimately sourced. A weak intake at our end puts every downstream buyer at risk.
Third, it keeps us BBB accredited and worth working with. Our 900+ five-star Trustpilot reviews reflect a decade and a half of consistent compliance, transparent pricing, and prompt payment. That reputation is a moat we've spent 15 years building, and no single questionable box is worth losing it over.
Selling extra Dexcom supplies isn't a legal gray area when you do it correctly. It's an established, well-understood transaction protected by long-standing property law and bounded by a small set of clear federal rules. The question isn't whether you can legally sell your Dexcom sensors. The question is whether the specific boxes you're holding meet the criteria, and now you know exactly how to check.
Ready to see what your Dexcom supplies are worth? Get an instant quote here. The form asks the same compliance questions we've walked through above, and you'll see your payout upfront before you ship a single box.
Written by the ValueCGM compliance team. This article is general information about the legality of reselling personally-owned diabetic supplies and is not legal advice. If you have questions specific to your situation, consult a qualified attorney.