Dexcom G7 GSS 9500-155Recalls & reported problems

Summary

The FDA's MAUDE database contains 7,118 adverse event reports that list this exact device (DI 00386270003386), received between Jun 29, 2023 and Jan 3, 2026 — classified as 45 injuries, 7,073 malfunctions.

The most frequently reported specific device problem is “Wireless Communication Problem” (5,265 reports).

Reports come from manufacturers, hospitals and patients and are not verified by the FDA. A report does not prove the device caused the event, and counts can't be used to compare devices or estimate failure rates. What reports can and can't tell you · How this data works · Data updated Oct 16, 2026.

Most reported problems

Recent adverse event reports

The 25 most recent of 7,118 reports, in the reporter's own words as published by the FDA.

• MalfunctionJan 3, 2026Protective Measures Problem

  DEXCOM BECAME AWARE THAT THE USER EXPERIENCED A FAILURE BUT DID NOT RECEIVE THE EXPECTED SENSOR FAILURE ALERT ON THEIR G7 CGM APPLICATION. DATA WAS PROVIDED AND AN INVESTIGATION WAS PERFORMED. THE ROOT CAUSE WAS DETERMINED TO BE A CODING ISSUE. THE G7 CGM APPLICATION ONLY DETECTS THAT THE SESSION HAS ENDED, THUS, IT DOES NOT ALERT THE USER THAT THE SENSOR HAS FAILED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 23952876 ↗
• MalfunctionSep 11, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT A SIGNAL LOSS OCCURRED. NO PRODUCT OR DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND A PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 23030877 ↗
• MalfunctionSep 9, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT SIGNAL LOSS OCCURRED. PRODUCT HAS BEEN RECEIVED BUT IS PENDING EVALUATION. A FOLLOW UP REPORT WILL BE SUBMITTED UPON COMPLETION. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 23012325 ↗
• MalfunctionSep 5, 2025Premature End-of-Life Indicator; Premature End-of-Life Indicator

  IT WAS REPORTED THAT EARLY SENSOR EXPIRATION OCCURRED. THE SENSOR WAS INSERTED INTO THE ARM. NO PRODUCT OR DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND A PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22978618 ↗
• MalfunctionSep 3, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT SIGNAL LOSS OCCURRED. IT WAS INDICATED THE PATIENT STARTED THEIR TRANSMITTER PAST THE 'USE BY' DATE, WHICH IS MISUSE OF THE DEVICE. PERFORMANCE DATA WAS REVIEWED. THE ALLEGATION WAS CONFIRMED DUE TO THE FINDING OF SIGNAL LOSS OVER AN HOUR WITHIN THE INVESTIGATION WINDOW. THE PROBABLE CAUSE WAS THE TRANSMITTER AND APP WERE UNABLE TO ESTABLISH A CONNECTION. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22953415 ↗
• MalfunctionAug 29, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT A PAIRING ISSUE OCCURRED. PERFORMANCE DATA WAS REVIEWED. A PAIRING ISSUE WAS NOT FOUND WITHIN THE INVESTIGATION WINDOW. THE ALLEGATION WAS NOT CONFIRMED. HOWEVER, SIGNAL LOSS OVER AN HOUR WAS FOUND IN CONNECTION TO THE REPORTED ALLEGATION. THE PROBABLE CAUSE OF THE SIGNAL LOSS WAS DETERMINED TO BE THE TRANSMITTER AND APP WERE UNABLE TO ESTABLISH A CONNECTION. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22928435 ↗
• InjuryAug 27, 2025Low Readings; Low Readings

  IT WAS REPORTED THAT AN INACCURACY BETWEEN THE CONTINUOUS GLUCOSE MONITOR (CGM) AND THE BLOOD GLUCOSE (BG) METER OCCURRED. THE WEARABLE WAS INSERTED INTO THE ARM ON (B)(6) 2025. ON (B)(6) 2025, THE PATIENT WAS SHOWING SYMPTOMS OF DIABETIC KETOACIDOSIS (DKA). SHE FELT LIGHTHEADED, "SMELLING OF KETONES", NAUSEA AND VOMITING. THE CGM WAS DISPLAYING 315 MG/DL WHILE THE BG WAS OVER 600 MG/DL. THE PATIENT WAS TAKEN TO THE EMERGENCY DEPARTMENT AND TREATED WITH IV FLUIDS. LABORATORY TESTS WERE ALSO DONE. RESULTS SHOWED THAT THE PATIENT WAS NOT IN DKA. THE PATIENT WAS DISCHARGED THE SAME EVENING WHEN THEY STABILIZED. NO DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND THE PROBABLE CAUSE COULD NOT BE DETERMINED. THE REPORTED GLUCOSE VALUES FALL WITHIN THE B ZONE OF THE PARKES ERROR GRID. NO ADDITIONAL PATIENT OR EVENT INFORMATION IS AVAILABLE.

  Patient problems: Dizziness; Hyperglycemia; Nausea; Vomiting

  MAUDE report 22909680 ↗
• MalfunctionAug 27, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT A PAIRING ISSUE OCCURRED. PERFORMANCE DATA WAS REVIEWED. A PAIRING ISSUE WAS NOT FOUND WITHIN THE INVESTIGATION WINDOW. THE ALLEGATION WAS NOT CONFIRMED. HOWEVER, SIGNAL LOSS OVER ONE HOUR WAS FOUND IN CONNECTION TO THE REPORTED ALLEGATION. THE PROBABLE CAUSE OF THE SIGNAL LOSS COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22906156 ↗
• MalfunctionAug 27, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT A PAIRING ISSUE OCCURRED. PERFORMANCE DATA WAS REVIEWED. A PAIRING ISSUE WAS NOT FOUND WITHIN THE INVESTIGATION WINDOW. THE ALLEGATION WAS NOT CONFIRMED. HOWEVER, SIGNAL LOSS OVER AN HOUR WAS FOUND IN CONNECTION TO THE REPORTED ALLEGATION. THE PROBABLE CAUSE OF THE SIGNAL LOSS WAS DETERMINED TO BE THE TRANSMITTER AND APP WERE UNABLE TO ESTABLISH A CONNECTION. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22905651 ↗
• MalfunctionAug 27, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT A PAIRING ISSUE OCCURRED. PERFORMANCE DATA WAS REVIEWED. A PAIRING ISSUE WAS NOT FOUND WITHIN THE INVESTIGATION WINDOW. THE ALLEGATION WAS NOT CONFIRMED. HOWEVER, SIGNAL LOSS OVER ONE HOUR WAS FOUND IN CONNECTION TO THE REPORTED ALLEGATION. THE PROBABLE CAUSE OF THE SIGNAL LOSS COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22903023 ↗
• MalfunctionAug 20, 2025Break; Break

  IT WAS REPORTED THAT A BROKEN SENSOR WIRE OCCURRED. THE SENSOR WAS INSERTED INTO THE ARM ON (B)(6) 2025. NO PRODUCT OR DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND A PROBABLE CAUSE COULD NOT BE DETERMINED. NO SERIOUS OR PROLONGED PATIENT HARM OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: Foreign Body In Patient; Pain

  MAUDE report 22857151 ↗
• MalfunctionAug 18, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT SIGNAL LOSS OCCURRED. PERFORMANCE DATA WAS REVIEWED. THE ALLEGATION WAS CONFIRMED DUE TO THE FINDING OF SIGNAL LOSS OVER AN HOUR WITHIN THE INVESTIGATION WINDOW. THE PROBABLE CAUSE WAS THE TRANSMITTER AND APP WERE UNABLE TO ESTABLISH A CONNECTION. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22835499 ↗
• MalfunctionAug 6, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT SIGNAL LOSS OCCURRED. IT WAS INDICATED THE PATIENT STARTED THEIR TRANSMITTER PAST THE 'USE BY' DATE, WHICH IS MISUSE OF THE DEVICE. PERFORMANCE DATA WAS REVIEWED. THE ALLEGATION WAS CONFIRMED DUE TO THE FINDING OF SIGNAL LOSS OVER AN HOUR WITHIN THE INVESTIGATION WINDOW. THE PROBABLE CAUSE WAS THE TRANSMITTER AND APP WERE UNABLE TO ESTABLISH A CONNECTION. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22730215 ↗
• MalfunctionJul 30, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT SIGNAL LOSS OCCURRED. IT WAS INDICATED THE PATIENT STARTED THEIR TRANSMITTER PAST THE 'USE BY' DATE, WHICH IS MISUSE OF THE DEVICE. PERFORMANCE DATA WAS REVIEWED. THE ALLEGATION WAS CONFIRMED DUE TO THE FINDING OF SIGNAL LOSS OVER AN HOUR WITHIN THE INVESTIGATION WINDOW. THE PROBABLE CAUSE WAS THE TRANSMITTER AND APP WERE UNABLE TO ESTABLISH A CONNECTION. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22666504 ↗
• MalfunctionJul 29, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT A NO READINGS/ SENSOR ERROR/ BRIEF SENSOR ISSUE OCCURRED. PERFORMANCE DATA WAS REVIEWED. NO READINGS/ SENSOR ERROR/ BRIEF SENSOR ISSUE WAS NOT FOUND WITHIN THE INVESTIGATION WINDOW. THE ALLEGATION WAS NOT CONFIRMED. HOWEVER, SIGNAL LOSS OVER AN HOUR WAS FOUND IN CONNECTION TO THE REPORTED ALLEGATION. THE PROBABLE CAUSE OF THE SIGNAL LOSS WAS DETERMINED TO BE THE TRANSMITTER AND APP WERE UNABLE TO COMPLETE A DATA TRANSFER. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22646382 ↗
• MalfunctionJul 28, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT NO READINGS/ SENSOR ERROR/ BRIEF SENSOR ISSUE OCCURRED. PERFORMANCE DATA WAS REVIEWED. NO READINGS/ SENSOR ERROR/ BRIEF SENSOR ISSUE WAS NOT FOUND WITHIN THE INVESTIGATION WINDOW. THE ALLEGATION WAS NOT CONFIRMED. HOWEVER, SIGNAL LOSS OVER ONE HOUR WAS FOUND IN CONNECTION TO THE REPORTED ALLEGATION. THE PROBABLE CAUSE OF THE SIGNAL LOSS COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22625535 ↗
• MalfunctionJul 25, 2025Detachment of Device or Device Component; Detachment of Device or Device Component

  IT WAS REPORTED THAT A DETACHED OR MISSING SENSOR WIRE OCCURRED. THE SENSOR WAS INSERTED INTO THE ARM ON (B)(6) 2025. PRODUCT HAS BEEN RECEIVED BUT IS PENDING EVALUATION. A FOLLOW UP REPORT WILL BE SUBMITTED UPON COMPLETION. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22612484 ↗
• MalfunctionJul 22, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT UNSPECIFIED ERROR MESSAGE OCCURRED. THE SENSOR WAS INSERTED INTO THE ARM ON (B)(6) 2025. DATA WAS EVALUATED AND THE ALLEGATION WAS CONFIRMED AS SIGNAL LOSS GREATER THAN AN HOUR WAS CONFIRMED. THE PROBABLE CAUSE WAS DETERMINED TO BE SIGNAL LOSS. THE PROBABLE CAUSE OF THE SIGNAL LOSS COULD NOT BE DETERMINED. THE REPORTED EVENT OF A UNSPECIFIED ERROR MESSAGE IS REPORTABLE BASED ON THE FINDING OF SIGNAL LOSS GREATER THAN AN HOUR. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22570024 ↗
• MalfunctionJul 22, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT SIGNAL LOSS OCCURRED. PERFORMANCE DATA WAS REVIEWED. THE ALLEGATION WAS CONFIRMED DUE TO THE FINDING OF SIGNAL LOSS OVER AN HOUR WITHIN THE INVESTIGATION WINDOW. THE PROBABLE CAUSE WAS THE TRANSMITTER AND APP WERE UNABLE TO ESTABLISH A CONNECTION. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22566893 ↗
• MalfunctionJul 17, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT A SIGNAL LOSS OCCURRED. NO PRODUCT OR DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND A PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22536146 ↗
• MalfunctionJul 17, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT NO READINGS/ SENSOR ERROR/ BRIEF SENSOR ISSUE OCCURRED. PERFORMANCE DATA WAS REVIEWED. NO READINGS/ SENSOR ERROR/ BRIEF SENSOR ISSUE WAS NOT FOUND WITHIN THE INVESTIGATION WINDOW. THE ALLEGATION WAS NOT CONFIRMED. HOWEVER, SIGNAL LOSS OVER ONE HOUR WAS FOUND IN CONNECTION TO THE REPORTED ALLEGATION. THE PROBABLE CAUSE OF THE SIGNAL LOSS COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22535570 ↗
• MalfunctionJul 14, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT SIGNAL LOSS OCCURRED. PERFORMANCE DATA WAS REVIEWED. THE ALLEGATION WAS CONFIRMED DUE TO THE FINDING OF SIGNAL LOSS OVER AN HOUR WITHIN THE INVESTIGATION WINDOW. THE PROBABLE CAUSE WAS THE TRANSMITTER AND APP WERE UNABLE TO ESTABLISH A CONNECTION. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22502618 ↗
• MalfunctionJul 14, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT A PAIRING ISSUE OCCURRED. PERFORMANCE DATA WAS REVIEWED. A PAIRING ISSUE WAS NOT FOUND WITHIN THE INVESTIGATION WINDOW. IT WAS INDICATED THE PATIENT STARTED THEIR TRANSMITTER PAST THE 'USE BY' DATE, WHICH IS MISUSE OF THE DEVICE. THE ALLEGATION WAS NOT CONFIRMED. HOWEVER, SIGNAL LOSS OVER AN HOUR WAS FOUND IN CONNECTION TO THE REPORTED ALLEGATION. THE PROBABLE CAUSE OF THE SIGNAL LOSS WAS DETERMINED TO BE THE TRANSMITTER AND APP WERE UNABLE TO ESTABLISH A CONNECTION. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22501176 ↗
• MalfunctionJul 10, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT A SIGNAL LOSS OCCURRED. IT WAS INDICATED THE PATIENT STARTED THEIR TRANSMITTER PAST THE 'USE BY' DATE, WHICH IS MISUSE OF THE DEVICE. NO PRODUCT OR DATA WAS PROVIDED FOR EVALUATION. THE ALLEGATION AND A PROBABLE CAUSE COULD NOT BE DETERMINED. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22472545 ↗
• MalfunctionJun 11, 2025Wireless Communication Problem; Wireless Communication Problem

  IT WAS REPORTED THAT SIGNAL LOSS OCCURRED. THE PRODUCT WAS EVALUATED. AN EXTERNAL VISUAL INSPECTION WAS PERFORMED AND PASSED. PERFORMANCE DATA WAS NOT PROVIDED FOR EVALUATION. THE ALLEGATION COULD NOT BE DETERMINED. A PROBABLE CAUSE COULD NOT BE DETERMINED AS THE ALLEGATION WAS NOT FOUND. NO INJURY OR MEDICAL INTERVENTION WAS REPORTED.

  Patient problems: No Clinical Signs, Symptoms or Conditions

  MAUDE report 22185726 ↗