Quick answer: Yes. Medicare Part B covers the Dexcom G7 as durable medical equipment for people with diabetes who use insulin — any insulin, any amount — or who have a documented history of problematic hypoglycemia. After the Part B deductible ($283 in 2026), Medicare pays 80% and you owe 20% coinsurance; a Medigap supplement typically covers that 20%, and some Medicare Advantage plans reduce or eliminate it for in-network suppliers. The catch: sensors must come from a Medicare-enrolled DME supplier, and the paperwork has to be exactly right.
Who qualifies in 2026
Medicare's CGM criteria (set out in CMS coverage policy LCD L33822) loosened significantly in 2023 and have stayed patient-friendly since. You're eligible for a covered G7 if you have diabetes (type 1 or type 2), you're being treated by a doctor for it — and at least one of these is true:
- You take insulin. Any insulin: multiple daily injections, a pump, or even one basal shot a day. The old "three or more injections daily" rule is gone.
- You have a history of problematic hypoglycemia — even without insulin. Specifically, documentation of either a Level 2 low (glucose under 54 mg/dL) that recurred despite adjustments to your treatment plan, or a single Level 3 low severe enough that you needed another person's help.
There's one more logistical rule: you need to have seen the doctor who prescribes your CGM within the six months before the order (an in-person or telehealth visit both count), and then ongoing visits every six months while you use it.
What you'll actually pay
| Your setup | Typical G7 cost | Why |
|---|---|---|
| Original Medicare + Medigap | Usually $0 | Medicare pays 80%, your supplement picks up the 20% coinsurance |
| Original Medicare only | ~20% of the approved amount (often roughly $30–$50/mo) | You owe the coinsurance after the $283 annual Part B deductible |
| Medicare Advantage | $0 – ~$50/mo, plan dependent | Plans must match Part B coverage at minimum; some reduce or eliminate coinsurance for in-network DME suppliers — check your Evidence of Coverage |
| Medicare + Medicaid (dual eligible) | Usually $0 | What Medicaid pays toward the Medicare share varies by state, but suppliers can't bill Qualified Medicare Beneficiary (QMB) members for it |
Compare that with the $500+ retail price and it's clear why sorting out Medicare coverage beats any coupon on the internet.
The requirements that trip people up
When a Medicare G7 claim goes sideways, it's almost never because the person didn't qualify. It's one of these:
- The six-month visit window lapsed. Medicare wants a diabetes visit on file within six months of each ordering period. Miss it, and shipments pause until you've seen your doctor. A good supplier warns you before this happens.
- The chart notes don't say the magic words. Coverage rests on what's documented — insulin use, visit dates, hypoglycemia events. If your doctor's notes don't spell it out, the claim bounces even though you genuinely qualify.
- The sensors came from the wrong place. Part B pays DME suppliers, not retail pharmacy counters, for most setups. Buying at the register and hoping to get reimbursed later is a losing move.
- Using only a phone, with no receiver on file. Medicare's policy requires a covered receiver in the mix — CMS says the supply allowance isn't covered if you never use the durable receiver, even if you mostly use the phone app. Suppliers who work with Medicare daily know how to set this up correctly so it never becomes your problem.
Medicare Advantage notes
Advantage plans (Humana, UnitedHealthcare, Aetna, and the rest) must cover at least what Original Medicare covers, and some reduce or eliminate CGM cost-sharing when you use an in-network supplier — your plan's Evidence of Coverage has the actual number. Two Advantage-specific wrinkles:
- Your supplier must be in your plan's network, which is narrower than "enrolled with Medicare."
- Some plans route CGMs through the pharmacy benefit instead of DME. That can be perfectly fine — but it changes what you pay, so it's worth pricing both if your plan offers both.
Why there's no Medicare coupon (and why that's fine)
Manufacturer discount programs exclude government-insurance beneficiaries — federal anti-kickback rules are why every manufacturer writes that exclusion into its terms, and any site claiming otherwise is one to close immediately. But this matters less than it sounds: for a qualified Medicare patient, covered G7 sensors with a Medigap plan cost less than any couponed cash price anywhere. The "discount" for Medicare folks isn't a coupon — it's getting the coverage you already paid taxes for actually working.
Getting set up
The practical path: use a Medicare-enrolled DME supplier and let them run the process. Medically Modern (the team behind this site) does this every day — they verify your Part B or Advantage benefits, collect the visit documentation from your doctor's office, make sure the order meets Medicare's format, and ship 90-day supplies to your door with the six-month visit reminders built in.
It starts with the same two-minute form as everything else on this site: check my coverage. If you qualify, you'll know your exact out-of-pocket (usually $0 with a supplement) before anything ships.