FDA Medical Device Classification: Class I, II, III and How to Find Your Product Code

2026-07-07 · Caduvo Team

Understand FDA risk classes for medical devices, find your product code and classification using the FDA database, and learn which premarket requirements apply to Class I, II, and III devices.

If you're building a medical device, the FDA decides your regulatory path—your job is to figure out which one applies. The agency assigns every device a risk class based on its intended use and indications. That classification sets the submission type and the controls you'll live with for the life of the product. Getting it wrong isn't just a paperwork mistake; it can derail a timeline by months.

This post walks through the three FDA medical device classes, how they map to premarket requirements, and the exact steps to look up your product code and classification in the FDA's database.

The Three FDA Medical Device Classes

FDA risk classes are defined in 21 CFR 860. Class I, II, and III represent low, moderate, and high risk. The key factor is the level of control needed to provide reasonable assurance of safety and effectiveness.

Class I – Low risk. Most are exempt from premarket notification. General Controls alone are usually enough. Examples: tongue depressors, manual stethoscopes, elastic bandages, disposable scalpels (product code FMF).

Class II – Moderate risk. General Controls aren’t sufficient, so FDA adds Special Controls—performance standards, postmarket surveillance, guidance documents, and often a 510(k) clearance. Examples: powered wheelchairs (ITI), infusion pumps (FRN), surgical drapes, and pregnancy test kits.

Class III – High risk. These sustain life, prevent health impairment, or present a potential unreasonable risk. Most require a PMA (Pre-market Approval) with clinical data. Examples: implantable pacemakers, heart valves, and silicone breast implants. Any new device without a predicate device is automatically Class III by statute, which is why understanding classification early is non-negotiable.

How Classification Determines Your Premarket Path

The classification directly tells you what you'll file:

• Class I – Most are 510(k)-exempt. You still register your establishment and list the device. If the device is not exempt (a small subset), you submit a 510(k).
• Class II – Typically requires a 510(k) Pre-market Notification. You'll need to identify a predicate device that is legally marketed and show substantial equivalence. Some Class II devices are 510(k)-exempt.
• Class III – Requires a PMA unless it's a pre-amendment Class III device that FDA has not yet required to go through PMA. A PMA is the most data-intensive path: you'll submit clinical evidence proving safety and effectiveness. Only a small fraction of devices are Class III.

If your device has no predicate, it's automatically Class III. The De Novo pathway lets you reclassify a novel, low-to-moderate-risk device into Class I or II, avoiding the PMA burden. De Novo is common for first-of-a-kind products.

How to Find Your Product Code and Classification

The FDA Product Classification Database is free and doesn't require an account. Here's the workflow:

1. Go to the FDA Product Classification page.
2. Enter a device name in the "Device" field (e.g., "scalpel") or select a review panel.
3. The search returns a list of matching entries. Each row shows the regulation number, device class, and three-letter product code.
4. Click the device name to see the regulation text and any special controls.

Real example:

• Search for "scalpel" → see product code FMF for "Blade, Scalpel, Disposable," regulation number 880.5570, Class I, 510(k) exempt.
• Search for "infusion pump" → product code FRN, regulation 880.5725, Class II, requires 510(k).

The three-letter product code is the smallest unit of device categorization; it appears on FDA forms, listings, and many payer documents. You'll use it throughout the device's life. While the FDA database works well for single-device searches, teams managing multiple candidates sometimes use platforms that aggregate classification data and track changes across codes.

What Each Class Means for Ongoing Controls

Once you're on the market, the class defines what you must maintain:

Class I – General Controls

• Register the establishment and list the device.
• Follow FDA's Quality System Regulation (21 CFR 820).
• Meet labeling requirements.
• Submit Medical Device Reports (MDR) for adverse events.
• Premarket notification unless exempt.

Class II – General Controls plus Special Controls

• All General Controls apply.
• Special Controls may include mandatory performance standards, postmarket surveillance studies, patient registries, or guidance documents specific to the device type.
• For example, an infusion pump may require cybersecurity guidance as a Special Control.

Class III – General Controls plus PMA

• All General Controls apply.
• The PMA approval order itself acts as a control document; any change to device design, manufacturing, or labeling can require a PMA supplement.
• Post-approval studies are often mandated.
• Fewer devices but far heavier regulation.

Actionable Takeaways

• Find your device classification early—ideally before design freeze—so the regulatory timeline is factored into your development plan.
• Look up your product code in the FDA classification database and note the regulation number. That's your anchor point for all regulatory references.
• If you have no predicate device, start planning for a De Novo request; do not assume you can sneak through a 510(k).
• For Class II devices, predicate selection is a critical step that shapes your entire 510(k) strategy.
• Classification sets the premarket burden, not the reimbursement path. Reimbursement is a separate, parallel effort you should start early as well.