MAUDE Adverse Event Report: DEXCOM, INC. DEXCOM FOLLOW APP; CONTINUOUS GLUCOSE MONITOR

Catalog Number	SW10497
Medical Device Problem Codes	No Audible Alarm (1019); Display or Visual Feedback Problem (1184)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	09/17/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
(b)(4).
Event or Problem Description
It was reported that an alert/notification settings issue occurred.Data has been received but is pending evaluation.A follow up report will be submitted upon completion.No injury or medical intervention was reported.
Additional Manufacturer Narrative
(b)(4).
Event or Problem Description
It was reported that an alert/notification settings occurred.Performance data was reviewed.The allegation was undetermined via data.However, it was found that egvs not updating issue occurred within the investigation window.The probable cause could not be determined.No injury or medical intervention was reported.

• Brand Name: DEXCOM FOLLOW APP
• Common Device Name: CONTINUOUS GLUCOSE MONITOR
• Manufacturer (Section D): DEXCOM, INC.; 6340 sequence dr.; san diego CA 92121
• Manufacturer Contact: ashley spoto ; 6340 sequence dr.; san diego, CA 92121 ; 8582000200
• MDR Report Key: 23352009
• Report Number: 3004753838-2025-296810
• Device Sequence Number: 9131552
• Product Code: QBJ
• UDI-Device Identifier: 00386270001931
• UDI-Public: (01)00386270001931
• Combination Product (Y/N): N
• Initial Reporter State: NJ
• Initial Reporter Country: US
• PMA/510(K) Number: DEN170088
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Consumer
• Initial Reporter Occupation: Other
• Type of Report: Initial,Followup
• Report Date (Section B): 11/11/2025

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Lay User/Patient
• Device Catalogue Number: SW10497
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: No
• Type of Report(Section G): Follow-Up
• Initial Date Received by Manufacturer: 09/26/2025
• Supplement Date Received by Manufacturer: 10/27/2025
• Initial Report FDA Received Date: 10/21/2025
• Supplement Report FDA Received Date: 11/11/2025
• Was Device Evaluated by Manufacturer? (Y/N): No
• Is the Device Labeled for Single Use? (Y/N): No
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Concomitant Medical Products and Therapy/Usage Dates: TANDEM MOBI INSULIN PUMP
• Patient Age: 16 YR
• Patient Sex: Male