Dexcom G7 15 Day and Medicare

Last reviewed August 20, 2026 by the Medically Modern coverage team. Product coverage status changes as Medicare and suppliers update their listings — verify before ordering.

Here is the careful version of the answer, because this is a case where being confidently wrong could cost you real money.

Medicare's coverage policy for continuous glucose monitors (LCD L33822 and its policy article) sets criteria for CGMs as a category. It does not maintain a model-by-model approved list in the policy text, and it does not impose different clinical criteria on a 15-day sensor than on a 10-day one. In that sense, nothing about the G7 15 Day changes whether you qualify.

The criteria that apply either way

Whichever sensor you end up with, Medicare asks the same things. You must have diabetes mellitus, and meet one of:

• You are treated with insulin — any insulin, any regimen.
• Or you have documented problematic hypoglycemia: recurrent (more than one) level 2 events with glucose below 54 mg/dL that persist despite treatment changes, or one level 3 event below 54 mg/dL with altered mental or physical state requiring third-party assistance.

Plus the visit requirement that causes most denials: an in-person or approved telehealth visit with your treating practitioner within the six months before the order, and another every six months afterward documenting adherence. A pharmacist does not count. Full detail on the Medicare page.

What it costs on Medicare

Part B cost sharing does not vary by sensor model. In 2026 you pay the $283 annual Part B deductible, then 20% coinsurance on the Medicare-allowed amount. A Medigap policy typically covers that 20%. Medicare Advantage plans set their own cost sharing and may require prior authorization or a specific supplier.

One practical note: because a month of 15-day sensors is two sensors rather than three, the supply allowance billing differs from the standard G7 even though the monthly supply period is the same 30 days. Your supplier handles that; it is not something you need to manage.

Savings programs and Medicare: the short answer is no

• Dexcom's free trial excludes government health plans. Medicare, Medicaid and VA beneficiaries are not eligible — and for adults 18 and over the trial is precisely the product that ships, which makes this exclusion easy to trip over.
• The Patient Assistance Program may not include the 15-day sensor yet. Dexcom has indicated it joins the program a few months after launch.
• The pharmacy savings coupon requires opting out of insurance for that fill — on Medicare, that means paying cash instead of using coverage that is almost certainly cheaper.

What actually reduces your Medicare cost is supplemental coverage and using a supplier that accepts Medicare assignment. See the savings programs page for the full picture.

How to confirm coverage before you order

1. Ask your supplier to verify the specific product

   Not “does Medicare cover Dexcom” but “is this exact item billable for this beneficiary today.” The distinction matters.

2. Confirm your visit documentation is current

   If your last qualifying visit was more than six months ago, fix that first — it is the most common denial reason regardless of model.

3. If you have Medicare Advantage, call the plan

   Advantage plans set their own rules, formularies and supplier networks. Original Medicare's answer is not automatically theirs.

4. Get the answer before delivery, not after

   A denied claim after the sensors arrive is a much worse position than a delayed order.

Frequently asked questions

If Medicare covers the G7, does it automatically cover the G7 15 Day?

Not something you should assume. Medicare's clinical criteria are model-agnostic, but whether a specific item is currently billable depends on product coding and listings that update on their own schedule. Verify the exact product.

Can I stay on the standard G7 instead?

Yes. Dexcom states the G6 and G7 are Medicare-covered, and there is no requirement to move to a newer sensor. If coverage certainty matters more to you than fewer sensor changes, staying put is reasonable.

I am under 18. Does this page apply to me?

No — the G7 15 Day is cleared for adults 18 and over. Younger patients use the standard Dexcom G7. See the comparison page.

Why we are being careful rather than definitive

It would be easy to write “yes, Medicare covers it” and rank for the query. Here is why we are not.

Medicare's coverage policy sets clinical criteria for CGMs as a category, and the products that can actually be billed are governed separately — through product coding and the listings maintained for durable medical equipment. Those listings update on their own timetable after a product launches. So there is a real window in which a product is FDA-cleared, on the market, and still not confirmed as billable to Medicare. Given that Dexcom's own Medicare page lists the G6 and G7 and not the G7 15 Day, we treat this as a question to verify rather than to answer from a web page.

If you are on Medicare and want the 15-day sensor, the five minutes it takes to confirm is much cheaper than a denied claim after delivery.

Exactly what to ask, and who to ask

• Ask a DME supplier: “Is the Dexcom G7 15 Day currently billable to Medicare for me, today?” Suppliers deal with this daily and will know before a general web page reflects it.
• Ask Medicare directly at 1-800-MEDICARE if you want it from the source.
• If you have Medicare Advantage, ask the plan. Advantage plans maintain their own formularies and supplier networks; Original Medicare's answer is not automatically theirs.
• Ask what happens if it is not covered: whether the standard G7 is available to you instead, and whether switching later is straightforward.

If you are told it is not covered

You have three reasonable options, and none of them is paying full retail out of frustration:

1. Take the standard Dexcom G7

   Dexcom states it is Medicare-covered. You get the same platform with 10-day sensors, which for most people is a minor difference compared with the cost difference.

2. Ask again next quarter

   Product listings and formularies change. A no in one quarter is not permanent.

3. Price it as a cash purchase, carefully

   Understand first that paying cash means giving up Medicare's contribution for those sensors, and that manufacturer coupons require opting out of insurance. That is roughly $180–$320 a month versus a 20% coinsurance share — usually a bad trade if you qualify for coverage.

The requirement to keep an eye on either way

Whichever sensor you end up with, Medicare coverage continues only while the visit requirement is satisfied: a treating-practitioner visit within six months before the order, and another every six months afterward documenting adherence to your CGM regimen and diabetes treatment plan. A pharmacist does not satisfy it. This is the most common reason a Medicare CGM claim fails, and it has nothing to do with which sensor you chose.

Sources: CMS LCD L33822, CMS Policy Article A52464, CMS 2026 Part B premiums & deductibles, Dexcom Medicare FAQ, Dexcom — G7 15 Day offers FAQ.

Related guides