Class II U.S. Food and Drug Administration

Brand Name: Dexcom ONE+ Continuous Glucose Monitoring System Product recall: A software defect in which a low-priority file I/O check blocks

Recall published 5 months ago

A software defect in which a low-priority file I/O check blocks the higher-priority thread responsible for processing estimated glucose values (EGVs) and trend arrows. When the app is running in the background, EGV notifications may queue up and then "replay" sequentially when the user brings the app to the foreground, causing the Glucose Compass to flicker through previous EGVs. In more severe instances, the app may perceive signal loss and deploy signal loss mitigations. This delay in EGV and alert processing creates a risk that users may miss detection of a hypoglycemic or hyperglycemic event, or make treatment decisions based on outdated glucose information.

The hazard: Device malfunction

A malfunction was identified in this device. What matters most is whether your particular unit falls inside the affected model, lot or serial range.

What the notice says: A software defect in which a low-priority file I/O check blocks the higher-priority thread responsible for processing estimated glucose values (EGVs) and trend arrows. When the app is running in the background, EGV notifications may queue up and then "replay" sequentially when the user brings the app to the foreground, causing the Glucose Compass to flicker through previous EGVs. In more severe instances, the app may perceive signal loss and deploy signal loss mitigations. This delay in EGV and alert processing creates a risk that users may miss detection of a hypoglycemic or hyperglycemic event, or make treatment decisions based on outdated glucose information.

Why it matters: The device may not perform as intended — a mechanical failure, a software defect, an inaccurate reading, or an alarm that does not sound. For a device someone depends on, the consequence of the failure is usually worse than the failure itself.

Symptoms and when to call a doctor

If the device supports a vital function, do not disable or remove it on your own judgement. Contact the clinician who prescribed or fitted it, and use the back-up arrangement they gave you. Go to an emergency department if the symptoms the device is meant to manage are getting worse, or if an implanted device gives an unexpected alarm or shock.

This page is general information, not medical advice. If you feel unwell, a clinician who can see you is the only person able to judge your case.

Recall details

Recall number
Z-2165-2026
Published
May 20, 2026
Risk level
Class II
Status
Ongoing
Issued by
U.S. Food and Drug Administration
Brand
Dexcom, Inc.
Product type
Medical devices
Units affected
70212
Distribution
Nationwide
Made in
United States
Lot / code info
Lot Code: SW14244 versions 1.5.0 and 1.6.0 - UDI-DI: 00386270004307
UPC codes
00386270004307

Products covered by this recall

Brand Name: Dexcom ONE+ Continuous Glucose Monitoring System Product Name: Dexcom ONE+ iOS CGM App Model/Catalog Number: SW14244 Software Version: versions 1.5.0 and 1.6.0 Product Description: Dexcom ONE+ iOS CGM App Component: Dexcom ONE+ Continuous Glucose Monitoring System

Check your product

The notice names 4 codes you can read straight off the package. Type the one printed on yours and the list below narrows to it.

UPC / barcode

Read the twelve digits under the barcode on the package.

  • 00386270004307

Lot or batch code

Usually ink-stamped near the seam, the cap or the bottom of the pack.

  • SW14244 versions 1.5.0
  • 1.6.0 - UDI-DI

Model or item number

On the rating label, the box or the instruction sheet.

  • SW14244 Software Version

Codes are lifted verbatim from the FDA — Device enforcement notice. A code that is missing here may still be covered — the official notice is the complete list.

What to do about Malfunction

Dexcom, Inc. — A malfunction was identified in this device. What matters most is whether your particular unit falls inside the affected model, lot or serial range.

  1. Match the model, catalogue, lot and serial numbers on your device against the identifiers listed on this page.
  2. If the device is implanted, or you depend on it daily, speak to your clinician before changing anything about how you use it.
  3. Check whether the remedy is a software update, and if so confirm afterwards in the device menu that the version actually changed.
  4. If you are a clinic or facility, quarantine affected stock and record the correction in your recall log.

Who pays for a device recall

The manufacturer funds the remedy. The practical question is usually which link in the chain executes it.

  • If a clinic fitted or supplied the device, start there — they hold the serial-number records the manufacturer needs.
  • Ask for written confirmation that the remedy was applied to your serial number. That is what an insurer or a future clinician will want to see.
  • If you bought it yourself online or from a pharmacy, go to the manufacturer’s recall page rather than the retailer; device claims are handled centrally.
  • Where the remedy is a software update, there is nothing to claim, but do confirm the version changed afterwards.

Company contact: Dexcom, Inc. — 6340 Sequence Dr, San Diego, CA, 92121-4356

The official notice

This page summarises a notice published by U.S. Food and Drug Administration. The agency notice is the authoritative version — read it before you act, and treat it as the final word if anything here looks different.

Open the FDA — Device enforcement record U.S. Food and Drug Administration recalls

Questions people ask about this recall

Why was Dexcom, Inc. medical devices recalled?

A software defect in which a low-priority file I/O check blocks the higher-priority thread responsible for processing estimated glucose values (EGVs) and trend arrows. When the app is running in the background, EGV notifications may queue up and then "replay" sequentially when the user brings the app to the foreground, causing the Glucose Compass to flicker through previous EGVs. In more severe instances, the app may perceive signal loss and deploy signal loss mitigations. This delay in EGV and alert processing creates a risk that users may miss detection of a hypoglycemic or hyperglycemic…

How do I know if I have the recalled product?

Match the codes printed on your package against the notice: UPC 00386270004307; lot code SW14244 versions 1.5.0, 1.6.0 - UDI-DI; model number SW14244 Software Version. If the code on your package is not on that list, your unit is outside the recall.

What should I do with it right now?

Match the model, catalogue, lot and serial numbers on your device against the identifiers listed on this page.

Can I get my money back?

If a clinic fitted or supplied the device, start there — they hold the serial-number records the manufacturer needs.

Where was the recalled product sold?

It was distributed nationwide.

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