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What is an FDA 510(k)?

An FDA 510(k) is a premarket submission made to the U.S. Food and Drug Administration (FDA) to demonstrate that a medical device is substantially equivalent to a legally marketed predicate device.


It’s named after Section 510(k) of the Federal Food, Drug, and Cosmetic Act, which requires device manufacturers to notify the FDA at least 90 days before marketing a device in the United States.

510(k) Premarket Notification Process (Step by Step)

1. Determine if a 510(k) is Applicable

Use the FDA Product Classification database:

o Identify product code, device classification (I, II, or III), and regulation number.

o Confirm that a 510(k) is the correct path (typically for most Class II devices and some Class I).

2. Identify a Predicate Device

Must be legally marketed in the U.S. (pre-1976 or cleared via 510(k)).

Must have the same intended use and technological characteristics, or if different, the differences must not raise new safety/effectiveness concerns.

3. Develop the Device and Gather Data

Ensure the device complies with applicable standards and guidelines.

Perform bench testing, biocompatibility, electrical safety, software validation, and clinical studies if needed.

4. Prepare the Device and Gather Data

Structure (can vary by format):

Cover Letter

Table of Contents

Indications for Use Statement

510(k) Summary or Statement

Device Description (materials, components, software, etc.)

Substantial Equivalence Comparison Table

Labeling (Instructions for Use, packaging, labels)

Performance Data

o Bench testing (e.g., mechanical, electrical)

o Software documentation (Level of Concern)

o Biocompatibility

o Clinical data (if applicable)

Sterilization and Shelf Life (if sterile)

Electromagnetic compatibility (EMC) & Electrical safety

Risk Analysis (per ISO 14971)

5. Use eSTAR or Traditional Format

eSTAR: Interactive PDF template. Required for many Class II submissions.

Traditional PDF is still allowed for exempt categories.

6. Pay FDA User Fee (MDR Annual Update Required)

MDUFA V FY2025 fee for 510(k): ~$22,500 (small business: ~ $5,600)

Register establishment & list device.

7. Submit the 510(k) to FDA

Submit electronically via CDRH Portal or ESG.

8. Administrative & Acceptance Review (Day 0-15)

FDA checks:

o Completeness (per RTA checklist)

o Formatting and required sections

9. Substantive Review (Day 15-90)

Review team evaluates:

o Substantial equivalence to predicate

o Completeness and adequacy of testing

10. Final Decision

Substantially Equivalent (SE) → 510(k) Clearance Letter (K######)

Not Substantially Equivalent (NSE) → Consider De Novo or PMA

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