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Is Your AI-Powered Medical Device Covered Under Your Current Product Liability Policy?

An AI device keeps changing after it ships. Most product liability policies were written for a device that does not, which leaves post-market updates exposed.

3 min read · Medical Devices · May 25, 2026

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Maybe not, and the reason is timing. A traditional product is finished when it ships. An AI-powered device keeps changing, because the algorithm is updated, retrained, or tuned after it is cleared. Product liability policies were written for the first kind of product. The exposure that defines an AI device, that the version which caused harm may not be the version you sold, sits in the seam those policies do not address cleanly.

Why AI Devices Break the Product Liability Model

Product liability assumes a fixed product with a knowable condition at the time of sale. An AI device’s behavior can drift as its model is updated, so the product at the moment of an alleged injury may differ from what was cleared and from what the policy contemplated. That raises questions a standard form does not answer well: which version of the model was in use, whether a post-clearance update counts as a new product, and who is responsible when the change itself, rather than the original design, is what caused harm. When the product is software regulated as a medical device, the question is sharper still, because the software is the product and it is never truly finished.

Post-Market Modification Is the Gap

Each model update is arguably a change to the product. A policy that covers the device as cleared may not clearly respond to harm caused by a later modification, and that is exactly how an AI device evolves. This is also where product liability and Tech E&O meet, because an algorithm that produces a wrong output can look like a product defect or a professional service failure depending on who is arguing. Cybersecurity overlaps too, since the same connected, updatable nature that creates the modification question also creates the exposure behind Section 524B. When those changes are pre-authorized under a PCCP, the documented plan becomes its own exposure, covered in what a Predetermined Change Control Plan means for your device insurance. The wider question of whether a products policy follows any software update, not only an AI model change, is covered in whether your product liability policy covers software updates.

What to Confirm in the Policy

Read the policy for how it treats change. Does it cover the device as continuously modified, or only as it existed at clearance. Does it speak to software or algorithm updates at all, or is it silent. Is there a Tech E&O line to answer the output-and-service side of the exposure, coordinated with products liability so a claim does not fall between them. A silent policy is not a covered policy. With an AI device, silence on post-market modification usually means the most likely claim is the least clearly covered.

The practical risk is a quiet exclusion. A policy can cover the device as cleared and simply say nothing about updates, and silence on the most frequent change a software device makes is not protection. Underwriters are still catching up to continuously-learning products, which means two policies that read similarly can treat a model update very differently, and the difference only surfaces when a claim names a version you have already replaced. So ask the questions in writing and keep the answers. Does the form follow the device through its updates or freeze at clearance. Does it name software and algorithm changes at all. Is there a coordinated Tech E&O line for the output side. At claim time the argument will be about what the policy was understood to cover, and a written record of that understanding is worth more than a confident assumption.

What to Do Now

Treat each material model update the way you would treat a new product launch, and confirm the coverage keeps pace rather than freezing at the clearance date. Map the way your device changes over time to the policy language that would respond, and close the seam between products liability and Tech E&O before a claim finds it. A specialty review through Tower Street Insurance can confirm your program covers the device you ship today, not the one you cleared last year.

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