Dexcom sensor replacements

As I was getting ready for bed last night my strap knocked my sensor off of my upper arm, so I called for a replacement - something I haven’t needed to do in a very long time. Some of us have used Dexcom long enough to remember when replacements were if not limitless, very generous, and did not require much review - you simply explained the problem and they sent another.

The following is not new news - I first read about it here a while ago but I had forgotten, so for those of us who have been using them for (cough cough) a while I thought it would be good to remind that replacements of G6 or G7 sensors (I believe Dexcom One is in Europe) may be limited now or might require greater review than in the past.

The text from their website is below, but in a nutshell, if you need more than 3 replacements in a 12 month period they may need to do “further study” (my term) first.

And of particular note for me - in the past if I had to remove a sensor for a radiology test, I simply called for a new one. Under the newer policy they will provide education to minimize these replacements, which I take to mean we should try to schedule those tests on or around the date the sensor is expiring. I suggest if something happens near the expiration date, don’t request a replacement - save that call for failures earlier in sensor life.

The actual process went easily although I had to speak with a rep because I was having issues with the form. They asked if my doctor had approved my wearing the sensor on my arm and she had, so they proceeded. They also asked for the sensor serial number - I had the box but told them I did not have it with me. Below it says it is required but they did continue - I don’t know how often they will allow that so it might be good to note the sensor serial number when you insert it. They also asked for the transmitter ID, which is easy enough to find.

Just sharing some things to know and keep in mind.

Their policy is below. Italics are mine.


Sensor Replacement Policy for Dexcom CGM Products

As we rapidly expand our presence across the globe to make our life changing CGM technology available to millions of people who may otherwise not have access to it, we work hard to treat users fairly and ensure a positive experience with Dexcom.

Dexcom’s sensors are single use, disposable supplies intended for use up to 10 days before being discarded.

In that regard, Dexcom has implemented a replacement policy for our sensors when there is a failure of the sensor during the intended use time for the consumable sensor. There may be legal and contractual obligations for replacing defective products in some markets. Dexcom will replace all sensors that we confirm as failures during the intended lifetime of the sensors through investigation.

In the event a user requests a replacement for a non-defective sensor (sensor removed for a procedure, user application errors, etc.), the user will be provided with educational materials in the hopes of preventing future issues. In addition, as a gesture of goodwill, Dexcom will provide replacements if needed to ensure continued sensor supply, in a limited quantity each year.

Under these circumstances:

  • G-Series: Dexcom will provide a maximum of three (3) goodwill replacement sensors in a twelve (12) month period*.

  • Dexcom ONE* / Dexcom ONE+*: Dexcom will provide a maximum of two (2) goodwill replacement sensors in a twelve (12) month period.

Any requests for additional goodwill replacement sensors above these thresholds, will be handled by Technical Support leadership team according to their processes. Dexcom reserves the right to change these thresholds at any time at its discretion.

Sensor serial numbers are required for all replacements. For Dexcom G6 and Dexcom ONE replacements, transmitter serial numbers are required in lieu of sensor serial numbers.

It is important to understand that Dexcom is only limiting specific replacements that fall under “voluntary” which include inaccurate sensors and sensors that need to be removed for medical procedures. A sensor accidentally ripped out, I suppose, falls into this category.

Dexcom does not count sensor failure as voluntary and will replace failed sensors, as many as actually fail, for example a sensor that stops working during the 10 day cycle (not grace but the 10 days during the normal sensor cycle).

Yes the serial number is required so I keep the box top. G7 serial number is the number identified by the (21) prefix

Thank you for sharing the text of the email from Dexcom.

Thank you Dorie for posting the [very generous] Dexcom Sensor replacement policy for us.

The two main points for us to keep in mind:
1. Following investigation, Dexcom will replace all defective sensors - there isn’t a stated limit - serial number requested only for G6;
2. Dexcom will replace up to three (3) “non-defective” sensors per year as a goodwill gesture. G5, G6, G7 all included.

I believe “what you read a while ago” on here was a Member’s “assumption” based on rumor or something else that the maximum number replaced in a three month period would be three (3) sensors. If you think about it, needing more than three implies a “failure rate” of greater than 44%. If I had failures at that rate, I would know that I had selected the wrong device and common sense would direct me to change my management - nothing is designed to work well in every body.

Thank you as always Dennis for your reply, and for your investigation. I read it differently so appreciate your further study. Take care!

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Thanks for sharing this update, Dorie! For added security, you might want to try using a patch to cover your Dexcom sensor. This can help prevent accidental knocks and reduce the chances of needing a replacement.

Thank you. I used to have Simpatches but need to get more. Dexcom is sending some overpatches with the replacement.
Thanks again!