MAUDE Adverse Event Report: DEXCOM, INC. DEXCOM G7 CONTINUOUS GLUCOSE MONITORING SYSTEM

Catalog Number	SW12300
Medical Device Problem Code	Defective Alarm (1014)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	09/19/2025
Type of Reportable Event	Malfunction
Event or Problem Description
It was reported that "alert/notification settings" occurred.No product or data was provided for investigation.The allegation and the probable cause cannot be determined.
Additional Manufacturer Narrative
(b)(4).
Additional Manufacturer Narrative
(b)(4).3004753838-2025-293014 was reported in error.Please disregard initial reporting of this event as this event has now been deemed not reportable.
Event or Problem Description
Subsequent to the initial mdr, it was determined that a report was submitted in error.Upon further review, it was determined that the patient allegation does not meet the criteria of a reportable event.

• Brand Name: DEXCOM G7 CONTINUOUS GLUCOSE MONITORING SYSTEM
• 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: 23330911
• Report Number: 3004753838-2025-293014
• Device Sequence Number: 15918412
• Product Code: QBJ
• UDI-Device Identifier: 00386270001917
• UDI-Public: (01)00386270001917
• Combination Product (Y/N): N
• Initial Reporter Country: US
• PMA/510(K) Number: K213919
• 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): 11/07/2025

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: SW12300
• 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: 09/19/2025
• Supplement Date Received by Manufacturer: 10/20/2025
• Initial Report FDA Received Date: 10/17/2025
• Supplement Report FDA Received Date: 11/07/2025
• 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: HUMALOG AND LANTUS; LANTUS AND HUMALOG
• Patient Age: 7 YR
• Patient Sex: Female
• Patient Weight: 27 KG