Recall Register

Food, drugs, devices › Tandem Diabetes Care Inc

Device recall: t:slim X2 insulin pump; t:slim X2 insulin pump with Dexcom G5; t:slim X2 insulin pump with Basal-IQ technology; t: slim

FDA enforcement event 90628 · Class II · initiated 24 May 2022 · status Ongoing

DeviceVoluntary: Firm initiated2 product recordsSan Diego, CA

Tandem Diabetes Care Inc (San Diego, CA) initiated this device recall on 24 May 2022; FDA lists 2 product records under event 90628, classified Class II.

FDA defines Class II as a situation in which use of or exposure to a violative product may cause temporary or medically reversible adverse health consequences or where the probability of serious adverse health consequences is remote. 88% of the 839 device enforcement events initiated in 2022 carry the same class.

Status: Ongoing. Initiation: voluntary: firm initiated. Tandem Diabetes Care Inc has 11 enforcement events on this register, with a median of 1 product record per event.

Recall classification reflects the relative degree of health hazard. Text in quotation marks is FDA's. openFDA export dated 28 Sep 2026.

Recalling firm

Tandem Diabetes Care Inc, San Diego, CA.

Reason for recall

"Insulin pumps may have the following issues: 1) Malfunction 6 Non-Volatile Memory, 2) Inaccurate (Fluctuating) Battery Life Display, 3) Touchscreen Staying On, 4) Unexpected Open Loop, that can be mitigated with a software update. Issues could result in hypoglycemia, hyperglycemia or diabetic ketoacidosis."

Distribution

"US: NC, OK, ME, NY, TX, LA, NE, FL, AZ, IL, OH, CA, AL, MI, UT, VA, MA, SC, MS, GA, NV, HI, MN, WA, IN, AR, ID, CO, IA, MO, MT, PA, WI, NH, MD, WV, KS, NM, OR, KY, DE, ND, CT, NJ, TN, WY, AK, SD,…"

Product records

Recall numberProductQuantityClassStatusReport date
Z-1811-2022t:slim X2 insulin pump; t:slim X2 insulin pump with Dexcom G5; t:slim X2 insulin pump with Basal-IQ technology; t: slim x2 insulin pump with the Control-IQ Technology31,100Class IIOngoing5 Oct 2022
Z-1812-2022t:slim X2 insulin pump; t:slim X2 insulin pump with Dexcom G5; t:slim X2 insulin pump with Basal-IQ technology; t: slim x2 insulin pump with the Control-IQ Technology8399Class IIOngoing5 Oct 2022

Context

88%of 2022 device events are Class II839 events that year
2product records in this eventfirm median: 1
11events on this register for the firm

Other enforcement events for Tandem Diabetes Care Inc

InitiatedProduct (first record)TypeClassRecords
30 Jan 2026Tandem pumps are battery-operated infusion pumps capable of both basal and bolus delivery of insulin. The pumps utilize DeviceClass II1
6 Oct 2025Tandem Mobi Insulin Pump: Description/Catalog: Tandem insulin pumps are battery-operated infusion pumps capable of both DeviceClass I1
5 Aug 2025t:slim X2 insulin pump with Interoperable Technology, Control-IQ+ technology, REF: 1014070, 1014071, 1014072, 1014073, aDeviceClass II1
21 Jul 2025Battery Operated infusion pumps. t:slim X2 G5, Replacement, Refurbished, REF: 1000911; t:slim X2 GS Classic, ReplacementDeviceClass I1
3 Jul 2025t:slim X2 Insulin Pump with Interoperable Technology (with Tandem t:slim mobile app)DeviceClass II1
27 Feb 2025t:slim X2 Insulin Pump with Interoperable TechnologyDeviceClass I2
5 Mar 2024t:connect mobile app used in conjunction with t:slim X2 insulin pump with Control-IQ technologyDeviceClass I1
10 Sep 2020t:slim X2 Insulin Pump with Dexcom G5 Mobile CGM, and t:slim X2 Insulin Pump with Basal-IQ TechnologyDeviceClass II1
23 Apr 2018t:slim G4 Insulin Pump with Dexcom G4 Platinum CGM Software version: 4.3.4.3, Firmware version: 004722, Firmware, Fuel GDeviceClass II1
10 Jan 2014T:slim Insulin Delivery System Insulin Infusion PumpDeviceClass I1

All 11 events for Tandem Diabetes Care Inc

Questions and answers

Why was this device recalled?

FDA's record gives the reason for recall as: "Insulin pumps may have the following issues: 1) Malfunction 6 Non-Volatile Memory, 2) Inaccurate (Fluctuating) Battery Life Display, 3) Touchscreen Staying On, 4) Unexpected Open Loop, that can be mitigated with a software update. Issues could result in hypoglycemia, hyperglycemia or diabetic ketoacidosis."

What does Class II mean?

FDA classifies recalls by relative degree of health hazard. Class II is a situation in which use of or exposure to a violative product may cause temporary or medically reversible adverse health consequences or where the probability of serious adverse health consequences is remote.

Where was the product distributed?

FDA's distribution pattern field reads: "US: NC, OK, ME, NY, TX, LA, NE, FL, AZ, IL, OH, CA, AL, MI, UT, VA, MA, SC, MS, GA, NV, HI, MN, WA, IN, AR, ID, CO, IA, MO, MT, PA, WI, NH, MD, WV, KS, NM, OR, KY, DE, ND, CT, NJ, TN, WY, AK, SD,…"

Is the recall still ongoing?

FDA lists the status as Ongoing. "Terminated" means FDA has determined that all reasonable efforts to remove or correct the product have been made.

Where does this data come from?

openFDA enforcement reports (food, drug and device), CC0, export dated 28 Sep 2026. Text in quotation marks is FDA's. The FDA enforcement report linked above is authoritative.

Provenance

Source: openFDA device enforcement reports (CC0), export dated 28 Sep 2026; records grouped by FDA event number. The class shown for the event is the most severe class among its records. Errors in processing are corrected at the next build; see corrections.