Frequently asked questions

Not in the promo-code sense. Dexcom's real offers are a pharmacy discount for cash payers worth more than $200 off each 30-day supply, a free trial for people new to Dexcom, and an income-based assistance program — all issued free by Dexcom directly. There is no copay card that stacks on top of commercial insurance. Sites advertising secret Dexcom codes are repackaging one of these or handing out a generic pharmacy discount card.

Dexcom reports most people with CGM coverage pay $20 or less per month. Commercial copays commonly run $20–$89 depending on the plan and deductible — Dexcom itself advertises "as little as $89/month" for commercial plans with more cost-sharing. On Medicare with a supplement plan, many people pay $0.

Full retail is roughly $500–$580 for a month of sensors, but cash payers rarely need to pay that. Dexcom's pharmacy discount takes over $200 off each monthly supply, and discount cards like GoodRx have brought a month of the 15-day sensors to around $175 at participating pharmacies. Full breakdown in the cash price guide.

No. Federal law prohibits manufacturer copay assistance on any government insurance, including Medicare, Medicare Advantage, Medicaid, Tricare, and VA coverage. The good news is that Medicare and Medicaid coverage for the G7 is usually a better deal than any coupon.

Yes — GoodRx and similar cards (SingleCare and others) negotiate real cash prices and can save cash payers hundreds per month on the G7. Prices vary a lot by pharmacy, so compare a few. Note that discount cards can't be combined with insurance or with Dexcom's own discount; you use whichever single route is cheapest.

Yes. Medicare Part B covers the G7 as durable medical equipment for people with diabetes who use any insulin, or who have documented problematic hypoglycemia. After the Part B deductible you owe 20% coinsurance, which Medigap supplements typically cover in full. Sensors must come from a Medicare-enrolled DME supplier, and you need a diabetes-related doctor visit within six months of ordering. Full Medicare guide.

Most state Medicaid programs cover CGMs, generally for people who use insulin, and copays are usually zero or minimal. Exact criteria vary by state, which is why a benefits check is the fastest way to a definite answer for your situation.

Usually not. Most denials trace back to the claim going through the wrong benefit, or paperwork that didn't document insulin use or a recent visit. Those are fixable with a resubmission. Genuine criteria mismatches can be appealed with a letter of medical necessity, and appeals succeed more often than people expect. What to do after a denial.

It depends entirely on your plan. Pharmacies bill your pharmacy benefit, where copays can be low and predictable. DME suppliers bill the medical benefit, which on some plans — and most Medicare setups — is cheaper or the only covered route, and typically ships 90-day supplies to your door. The same sensors can differ significantly in price between the two, so the smart move is pricing both, which is what a benefits check does.

Yes, the G7 is prescription-only in the United States. Dexcom's over-the-counter sensor, Stelo, is a different product designed for adults not on insulin. If you don't have a G7 prescription yet, Medically Modern's free coverage check includes coordinating one with your doctor.

The G7 15 Day wears for up to 15.5 days instead of about 10, so a month takes two sensors instead of three, and it uses the same app experience. It is cleared for adults 18 and up; the 10-day sensor remains the option for ages 2+. For cash payers it often works out meaningfully cheaper per day; whether it is right for you and covered by your plan is worth confirming with your prescriber and a benefits check.

You fill out a short form with contact and insurance details — no payment information. Medically Modern's team verifies what your plan covers for the G7, compares the pharmacy and DME routes, checks which discount programs you can legally use, and tells you your actual monthly cost. There is no charge and no obligation to order.

Once benefits are verified and the prescription and any prior authorization are in place — often within days when the paperwork is handled proactively — sensors ship to your door, typically as a 90-day supply with free shipping and refill reminders.

This site is published by Medically Modern, a US home-delivery supplier of diabetes technology, as a free plain-English guide to G7 savings. It is not affiliated with or endorsed by Dexcom, Inc. When you use the coverage check, your request goes to Medically Modern's team. More on the about page.