Reported Reactions

Devices › Automated insulin dosing , threshold suspend

Device brand name · Automated insulin dosing threshold suspend

T Slim X2 Basal-Iq Mg/Dl: medical device reports filed with FDA

435 reports name it, 2019–2021. Manufacturer given most often on reports: Tandem Diabetes Care. Product code OZO.

435
device reports naming the brand
0% of all MAUDE reports · about 64 a year
0
reports, 12 months to August 2026
0 in the 12 months before
97.2%
classified as malfunction
79% across the product code
0%
classified as death, as reported
0 reports · not verified by FDA

435 medical device reports received by FDA name the brand "T Slim X2 Basal-Iq Mg/Dl" (automated insulin dosing threshold suspend); the manufacturer given most often on reports is Tandem Diabetes Care; received from October 2019 to October 2021. Brand names are as the reporter or manufacturer wrote them, so one product can appear under several spellings.

0 reports arrived in the 12 months to August 2026, and none in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are malfunction (97.2%) and injury (2.8%); across all automated insulin dosing , threshold suspend reports (product code OZO) death is recorded in 0.3% and malfunction in 79%. Event type is the reporter's classification of the report, not a verified outcome.

The device problems coded most often are pumping stopped (37.9%), charging problem (14%) and failure to sense (13.3%). The patient problems coded most often are hyperglycemia, hypoglycemia and loss of consciousness. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Reports by month, five years

01530Sep 2021: 30Oct 2021: 23Nov 2021: 0Dec 2021: 02022Jan 2022: 0Feb 2022: 0Mar 2022: 0Apr 2022: 0May 2022: 0Jun 2022: 0Jul 2022: 0Aug 2022: 0Sep 2022: 0Oct 2022: 0Nov 2022: 0Dec 2022: 02023Jan 2023: 0Feb 2023: 0Mar 2023: 0Apr 2023: 0May 2023: 0Jun 2023: 0Jul 2023: 0Aug 2023: 0Sep 2023: 0Oct 2023: 0Nov 2023: 0Dec 2023: 02024Jan 2024: 0Feb 2024: 0Mar 2024: 0Apr 2024: 0May 2024: 0Jun 2024: 0Jul 2024: 0Aug 2024: 0Sep 2024: 0Oct 2024: 0Nov 2024: 0Dec 2024: 02025Jan 2025: 0Feb 2025: 0Mar 2025: 0Apr 2025: 0May 2025: 0Jun 2025: 0Jul 2025: 0Aug 2025: 0Sep 2025: 0Oct 2025: 0Nov 2025: 0Dec 2025: 02026Jan 2026: 0Feb 2026: 0Mar 2026: 0Apr 2026: 0May 2026: 0Jun 2026: 0Jul 2026: 0Aug 2026: 0

Reports by the month FDA received them. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.

By year received

01172332019: 920192020: 23320202021: 1932021

Event type and report source

Event type, as classified on the report

Death0%0
Injury2.8%12
Malfunction97.2%423
Other0%0
Not given0%0

Who filed the report

Manufacturer report100%435
Voluntary report0%0
User facility report0%0
Distributor report0%0
Not given0%0

Grey bar: all 439,495 reports carrying product code OZO. Event type is the filer's classification and is not verified by FDA.

Device problems coded

Device problem (FDA code)ReportsShareShare across product code
Pumping stopped16537.9%6.5%
Charging problem6114%3%
Failure to sense5813.3%2.2%
Crackthe device cracked4811%2.1%
False alarm276.2%1.1%
Mechanical problema mechanical problem163.7%4.1%
Breakthe device broke102.3%9.5%
Data problem102.3%1%
Device displays incorrect message102.3%12.9%
Leak/splashthe device leaked92.1%0.6%
Communication or transmission problemthe device could not communicate or transmit81.8%1.3%
Incorrect measurementthe device measured wrongly81.8%3.2%
Obstruction of flow81.8%7.1%
Device sensing problem71.6%0.8%
Low impedance61.4%0%
Poor quality image61.4%0.6%
Battery problema problem with the battery51.1%4.1%
Material split, cut or torn40.9%0%
Filling problem30.7%1.4%
Material separation30.7%0.1%

FDA's device problem codes as entered on the report; one report can carry several. Generic codes such as "no apparent adverse event" are left out.

Patient problems coded

Patient problem (FDA code)ReportsShare
Hyperglycemiahigh blood sugar51.1%
Hypoglycemialow blood sugar40.9%
Loss of consciousnesspassing out20.5%
Vomitingbeing sick20.5%
Elevated ketones/ diabetic ketoacidosis10.2%
Fatiguetiredness10.2%
Headachehead pain10.2%
No patient involvement10.2%

Patient problem codes are present mainly in reports filed since 2019 and are often blank.

In context

MeasureT Slim X2 Basal-Iq Mg/DlProduct code OZOAll MAUDE reports
Reports435439,49526,136,888
Share of that pool—0.1%0%
Classified as death, per 1,000 reports039
Classified as injury2.8%20.6%36.2%
Classified as malfunction97.2%79%62.3%
Filed by the manufacturer100%100%94.9%

Shares are of reports, not of devices in use. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."

Other brands with product code OZO

BrandReportsLatest 12 monthsClassified as death
t:slim X2 Insulin Pump with Basal-IQ Technology142,6411,9160%
630G Insulin PUMP MMT-1715K 630G BLACK MG86,0165830.4%
530g Insulin Pump59,08300.8%
630G Insulin PUMP MMT-1715KL 630G35,0959450.5%
Sensor Enlite17,97800%
Pump Mmt-1715km 630g 3ml Black Medi16,204180.8%
Pump Mmt-1714k 630g Black Mmol Canada12,875730.2%
530g Insulin Pump Mmt-751nas12,062320.6%
Sensor Enlite Mmt-7008a10,133130.3%
530G Insulin Pump MMT-751LNAS9,062310.3%
630G Insulin PUMP MMT-1715KR 630G5,1261610.8%
530g Insulin Pump Mmt-751nal4,75310.4%
530G Insulin Pump MMT-551NAS4,32280.3%
530g Insulin Pump Mmt-751nab3,86660.4%
530g Insulin Pump Mmt-751nap3,59630.4%

Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA also states that "common products may have a higher number of adverse events due to the higher total number of people using the product."

Questions about T Slim X2 Basal-Iq Mg/Dl reports

How many FDA reports name T Slim X2 Basal-Iq Mg/Dl?

435 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 0 in the latest 12 months.

What kinds of events are reported?

malfunction (97.2%) and injury (2.8%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.

What device problems are coded?

pumping stopped (37.9%), charging problem (14%), failure to sense (13.3%), crack (11%) and false alarm (6.2%). These are FDA's device problem codes as entered on the report.

Who files these reports?

manufacturer reports (100%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.

Do these reports show that T Slim X2 Basal-Iq Mg/Dl was at fault?

No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA adds that "a causal relationship cannot be established between product and reactions listed in a report."

How do I report a problem with a medical device?

Through FDA MedWatch (Form FDA 3500 for health professionals and consumers), or to the manufacturer. See the guide on how to report.

Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. A report counts here when any device it lists carries this brand name after punctuation and capitalisation are normalised. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.

Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.