What Is a 510(k)?
A 510(k) is a premarket submission made to the FDA to demonstrate that the device to be marketed is at least as safe and effective — that is, substantially equivalent — to a legally marketed device (the predicate device) that was not subject to Premarket Approval (PMA).
The name comes from Section 510(k) of the Federal Food, Drug, and Cosmetic Act. It is the most common pathway to market for Class II medical devices and some Class I devices.
Key Facts About 510(k)
- Used for: Most Class II and some reclassified Class I devices
- Standard review time: 90 days (FDA goal)
- Actual average time: 3–6 months in practice
- FDA user fee (FY2025): $19,870 for standard 510(k)
- Small businesses: 50% fee reduction may apply
The Three Types of 510(k) Submissions
1. Traditional 510(k)
The standard submission type. Requires a full performance comparison with the predicate device and includes substantial technical documentation.
2. Special 510(k)
Used when you are modifying your own previously cleared device. A streamlined review process — typically completed in 30 days — but only applies when the change does not affect intended use or fundamental scientific technology.
3. Abbreviated 510(k)
Relies on FDA-recognized standards to demonstrate substantial equivalence. Reduces the amount of data required by referencing specific performance standards rather than a predicate device comparison for every element.
Finding a Valid Predicate Device
The most critical step in a 510(k) is identifying an appropriate predicate device. Your predicate must:
- Have the same intended use as your device
- Have the same or similar technological characteristics
- Have been legally marketed in the U.S. (cleared via 510(k) or marketed before 1976)
- Not have been found to be substantially non-equivalent or withdrawn from the market
What Goes Into a 510(k) Submission?
- 1Device description Complete description of your device including materials, design specifications, and all intended uses.
- 2Substantial equivalence comparison Side-by-side comparison of your device vs. the predicate, covering intended use and technological characteristics.
- 3Performance testing data Bench testing, biocompatibility (ISO 10993), electrical safety, software validation (if applicable), sterilization validation, and shelf-life testing.
- 4Labeling Complete proposed labeling including device name, intended use, directions for use, warnings, and contraindications.
- 5Manufacturing information Description of manufacturing processes and quality system information.
Timeline: What to Expect
- Day 0: Submission received by FDA
- Days 1–15: FDA performs Acceptance Review — checks for completeness
- Days 15–30: Substantive Review begins if accepted. If not accepted, you receive a Refuse to Accept (RTA) letter.
- Days 30–90: Full substantive review. FDA may issue an Additional Information (AI) request (formerly called an Interactive Review). This pauses the clock.
- Day 90 (goal): FDA issues Substantially Equivalent (SE) decision or Not Substantially Equivalent (NSE) decision
After Clearance: What You Must Do
Receiving 510(k) clearance doesn't mean you're done with FDA compliance. Post-clearance obligations include:
- Annual establishment registration renewal (October–December)
- Medical Device Reporting (MDR) for adverse events
- UDI compliance and GUDID listing
- Quality System Regulation (21 CFR Part 820) compliance
- Reporting significant device modifications to FDA before implementing them