---
title: "t:slim X2 Insulin Pump with Interoperable Technology — FDA record Z-1519-2025 | Is It on Recall"
description: "A software defect in Version 7.9 of the pump software for Tandem t:slim X2 and Tandem Mobi pumps, when used with Control IQ+ technology, will cause the pump to"
url: https://isitonrecall.com/recall/fda-device-z-1519-2025-t-slim-x2-insulin-pump-with-interoperable-technology/
updated: 2026-10-01
site: "Is It on Recall"
language: en
---

[Recall archive](https://isitonrecall.com/archives/) / FDA device enforcement

# t:slim X2 Insulin Pump with Interoperable Technology — FDA record Z-1519-2025

Reported ongoing

Status as reported in the agency record. FDA warns that enforcement status may not track the current recall lifecycle; check the current official notice.

Source date Feb 27, 2025. Retrieved Oct 1, 2026. Last updated Oct 1, 2026.

Archive changed Oct 1, 2026. USDA FSIS records are unavailable; [check FSIS directly](https://www.fsis.usda.gov/recalls). [Source coverage and dates](https://isitonrecall.com/sources/).

## What the record says

- **Product**: t:slim X2 Insulin Pump with Interoperable Technology
- **Reason**: A software defect in Version 7.9 of the pump software for Tandem t:slim X2 and Tandem Mobi pumps, when used with Control IQ+ technology, will cause the pump to incorrectly interpolate glucose trends when the Estimated Glucose Value (EGV) is above 255 mg/dL at the start or end of a gap in data collection due to a lapse in connection from a paired continuous glucose monitor (CGM) sensor, which can lead to under-delivery or over-delivery of insulin based on inaccurate result leading to severe cases of hypoglycemia or hyperglycemia.
- **Classification**: Class I
- **Recalling firm**: Tandem Diabetes Care, Inc.
- **Quantity**: 63 units
- **Agency-reported status**: Ongoing
- **Source record identifier**: Z-1519-2025

[Open the official record](https://api.fda.gov/device/enforcement.json?search=recall_number%3A%22Z-1519-2025%22)

[What the recall classes mean](https://isitonrecall.com/guides/recall-classes/). Classification is an agency assessment, not individual medical advice.

## Lot and product identifiers

| Label field | Details supplied by the agency |
| --- | --- |
| Lot, code or applicability | Software versions 7.9/UDI: 00389152407012 |

Match all identifying details in the current notice. A brand name alone is not enough.

## Distribution

US: AZ, CA, CO, CT, FL, HI, IA, ID, IL, IN, MD, ME, MI, MO, MS, NC, ND, NE, NJ, NM, NV, NY, OH, PA, TX, UT, VA, WA, WI OUS: N/A

States below are derived from the distribution text, including nationwide wording. They are not inferred from the firm's address.

- [Arizona](https://isitonrecall.com/state/arizona/)
- [California](https://isitonrecall.com/state/california/)
- [Colorado](https://isitonrecall.com/state/colorado/)
- [Connecticut](https://isitonrecall.com/state/connecticut/)
- [Florida](https://isitonrecall.com/state/florida/)
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- [Iowa](https://isitonrecall.com/state/iowa/)
- [Idaho](https://isitonrecall.com/state/idaho/)
- [Illinois](https://isitonrecall.com/state/illinois/)
- [Indiana](https://isitonrecall.com/state/indiana/)
- [Maryland](https://isitonrecall.com/state/maryland/)
- [Maine](https://isitonrecall.com/state/maine/)
- [Michigan](https://isitonrecall.com/state/michigan/)
- [Missouri](https://isitonrecall.com/state/missouri/)
- [Mississippi](https://isitonrecall.com/state/mississippi/)
- [North Carolina](https://isitonrecall.com/state/north-carolina/)
- [North Dakota](https://isitonrecall.com/state/north-dakota/)
- [Nebraska](https://isitonrecall.com/state/nebraska/)
- [New Jersey](https://isitonrecall.com/state/new-jersey/)
- [New Mexico](https://isitonrecall.com/state/new-mexico/)
- [Nevada](https://isitonrecall.com/state/nevada/)
- [New York](https://isitonrecall.com/state/new-york/)
- [Ohio](https://isitonrecall.com/state/ohio/)
- [Pennsylvania](https://isitonrecall.com/state/pennsylvania/)
- [Texas](https://isitonrecall.com/state/texas/)
- [Utah](https://isitonrecall.com/state/utah/)
- [Virginia](https://isitonrecall.com/state/virginia/)
- [Washington](https://isitonrecall.com/state/washington/)
- [Wisconsin](https://isitonrecall.com/state/wisconsin/)

## Dates in the source

- **Report date**: Apr 23, 2025
- **Recall initiation date**: Feb 27, 2025
- **Center classification date**: Apr 11, 2025

FDA company pages use the listing date; enforcement records use initiation dates; CPSC uses recall date; NHTSA uses report-received date. These dates are not interchangeable.

## What to do next

Read the official notice for the action that applies to your exact product.

[Read the current instructions](https://api.fda.gov/device/enforcement.json?search=recall_number%3A%22Z-1519-2025%22)

## Related records

[Medical devices records](https://isitonrecall.com/category/medical-devices/) [Tandem Diabetes Care Inc records](https://isitonrecall.com/brand/tandem-diabetes-care-inc/)