Medicare Part B coverage of Dexcom G7 sensors

Medicare Part B covers Dexcom G7 sensors, but only if your doctor prescribes them and you meet specific medical criteria. Part B treats the sensors as durable medical equipment (DME), the same category as wheelchairs and oxygen supplies. You will pay 20 percent of the approved amount after you meet your Part B deductible, and your supplier must be enrolled with Medicare.

The coverage is real, but the path to getting it paid is not automatic. Your doctor has to document that you have diabetes and that you meet the clinical criteria Medicare uses — usually that you use insulin multiple times daily or have a history of severe low blood sugar episodes. Once your doctor submits the prescription and supporting medical records, Medicare reviews the request before approving it.

Key Takeaways

  • Your doctor must prescribe Dexcom G7 and submit medical records showing you use insulin multiple times daily or have documented severe low blood sugar episodes.
  • You pay 20 percent of Medicare's approved amount for the sensors after meeting your Part B deductible; the supplier bills Medicare directly.
  • The supplier you use must be a Medicare-enrolled DME provider, not just any pharmacy or retailer that sells Dexcom.
  • Medicare covers the sensors themselves but not the transmitter, which Dexcom typically replaces under its own warranty program.
  • The approval process takes time — expect two to four weeks from the date your doctor submits the prescription and medical records.

What your doctor needs to submit

Your doctor does not straightforward write a prescription and send it to the pharmacy. For Medicare to cover Dexcom G7, your doctor must submit a detailed request that includes your medical records showing your diabetes type, your current insulin regimen, and your blood sugar history. If you have had severe low blood sugar episodes (hypoglycemia), those records help support the request.

The request goes to a Medicare-enrolled DME supplier, not to Medicare directly. The supplier handles the paperwork submission on your behalf. Your role is to make sure your doctor has the information Medicare needs and to authorize the supplier to request your medical records from your doctor's office. Without those records, the request will be delayed or denied.

How much you will pay

Your out-of-pocket cost depends on two things: whether you have met your Part B deductible for the year, and what Medicare's approved amount is for the sensors in your region. Medicare does not set a single national price; the approved amount varies. Once you know the approved amount, you pay 20 percent of it.

If you have not met your Part B deductible (which is set each year and varies), you pay the full approved amount until the deductible is satisfied, then 20 percent after that. Dexcom G7 sensors come in a box of 30 (a month's supply), so you will receive a bill for one month at a time. Some people reach their deductible quickly; others spread the cost across several months of sensor orders.

If you have a Medigap or Medicare Advantage plan, your coverage may be different. Medigap plans vary in what they cover after Medicare pays its share. Medicare Advantage plans set their own rules for DME, so check your plan documents or call the plan before ordering.

Choosing a Medicare-enrolled supplier

Not every retailer or pharmacy that sells Dexcom is set up to bill Medicare. You must use a supplier that is enrolled with Medicare as a DME provider. Dexcom maintains a list of authorized suppliers on its website, and you can filter by those that accept Medicare. You can also call Dexcom's customer service and ask which suppliers in your area are Medicare-enrolled.

Once you choose a supplier, give them your doctor's name and contact information. The supplier will request your medical records directly from your doctor's office and submit the Medicare request on your behalf. This is the supplier's job — you should not have to chase down paperwork yourself, though you may need to sign an authorization form so your doctor can release your records.

What happens after your doctor submits the request

Medicare reviews the request and either approves it, denies it, or asks for more information. The review usually takes two to four weeks. During this time, you can ask the supplier for an update, but Medicare does not notify you directly — the supplier receives the decision and tells you.

If Medicare approves the request, the supplier will ship your first box of sensors and bill Medicare and you for your share. You will then receive sensors on a regular schedule — typically one box per month. If Medicare denies the request, the supplier will tell you why and may ask your doctor to submit additional information or clarification.

If you disagree with a denial, you have the right to appeal. The appeal process is separate from the initial request and can take several months. Your supplier or your doctor can help you file an appeal, but you can also do it yourself by contacting Medicare directly.

Transmitter coverage and what is not included

Medicare covers the sensors but not the transmitter — the small device that sits on top of the sensor and sends readings to your phone or receiver. Dexcom typically replaces the transmitter under warranty if it fails, so you usually do not pay out of pocket for a replacement. However, if you lose or damage the transmitter, Dexcom charges a fee to replace it, and Medicare will not cover that fee.

Medicare also does not cover the receiver device (if you use one instead of a phone) or any accessories. You pay for those separately. The sensors themselves are what Medicare covers under Part B as DME.

Frequently Asked Questions

Does my Medicare Advantage plan cover Dexcom G7 the same way Part B does?

No. Medicare Advantage plans set their own rules for DME coverage. Some cover Dexcom G7 with the same 20 percent cost-sharing as Part B; others cover it differently or may not cover it at all. Check your plan's formulary or call the plan before ordering to find out what you will pay.

What if my doctor says I do not meet Medicare's criteria?

Medicare requires documentation that you use insulin multiple times daily or have a history of severe low blood sugar. If your doctor believes you meet these criteria but has not documented it clearly, ask your doctor to review your records and add notes about your insulin use or low blood sugar episodes. If your doctor does not think you meet the criteria, you can discuss other options with them or seek a second opinion.

Can I use Dexcom G7 while I wait for Medicare's decision?

Yes. You can purchase sensors out of pocket while the Medicare request is being reviewed. If Medicare approves the request, you can submit your out-of-pocket receipts to see if you are may have access to to reimbursement, though Medicare does not always reimburse for sensors purchased before approval. Ask your supplier or Medicare about reimbursement before you buy.

What if the supplier I want to use is not Medicare-enrolled?

You will need to use a different supplier to have Medicare pay. If you have a strong preference for a particular pharmacy or retailer, ask them if they are enrolled or if they plan to enroll. If they are not and do not plan to, you can purchase from them out of pocket, but Medicare will not cover the cost.

Do I need prior authorization before my doctor prescribes Dexcom G7?

Yes. Medicare requires prior authorization, which means your doctor must submit the request and get approval before you start using the sensors. Your supplier handles this step, but it means there is a waiting period between when your doctor writes the prescription and when you receive your first box of sensors.