MAUDE Adverse Event Report: TANDEM DIABETES CARE T:SLIM X2 INSULIN PUMP WITH CONTROL-IQ TECHNOLOGY; ALTERNATE CONTROLLER ENABLED INSULIN INFUSION PUMP

Model Number	1002717
Medical Device Problem Code	Pumping Stopped (1503)
Health Effect - Clinical Code	Hyperglycemia (1905)
Date of Event	06/30/2026
Type of Reportable Event	Serious Injury
Event or Problem Description
It was reported that pump experienced malfunction alarm.Customer¿s blood glucose (bg) level was displayed as "high"; however, specific value was not provided.Elevated bg was addressed by correction insulin injection and did not require assistance from a third-party.Technical support confirmed malfunction code was resettable, guided customer through pump reset process, verified malfunction did not recur after reset, advised customer that pump could continue to be used, and instructed customer to call back if malfunction alarm appeared again.

• Brand Name: T:SLIM X2 INSULIN PUMP WITH CONTROL-IQ TECHNOLOGY
• Common Device Name: ALTERNATE CONTROLLER ENABLED INSULIN INFUSION PUMP
• Manufacturer (Section D): TANDEM DIABETES CARE; 12400 high bluff drive; san diego CA 92130
• Manufacturer Contact: john connell ; 12400 high bluff drive; san diego, CA 92130 ; 858 224-6281
• MDR Report Key: 25762488
• Report Number: 3013756811-2026-122997
• Device Sequence Number: 15899563
• Product Code: QFG
• UDI-Device Identifier: 00389152286815
• UDI-Public: (01)00389152286815(22)1012965(11)231208
• Combination Product (Y/N): N
• Initial Reporter State: MN
• Initial Reporter Country: US
• PMA/510(K) Number: K203234
• 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
• Report Date (Section B): 07/09/2026

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: Yes
• Is this a Product Problem Report?: Yes
• Operator of Device: Lay User/Patient
• Device Model Number: 1002717
• Device Catalogue Number: 1012868
• Was Device Available for Evaluation?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 06/30/2026
• Initial Report FDA Received Date: 07/09/2026
• Was Device Evaluated by Manufacturer? (Y/N): No
• Date Device Manufactured: 12/08/2023
• 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: Reuse
• Patient Sequence Number: 1
• Outcome Attributed to Adverse Event: Other
• Patient Age: 23 YR
• Patient Sex: Female