An Abbreviated 510(k) uses summary reports of compliance with relevant FDA guidance documents, special controls, or recognized consensus standards in lieu of submitting full underlying test data. It can shorten preparation and review when suitable standards exist. FDA can still ask for the underlying data, so complete test reports should be kept in the design history file.

Why it matters

Useful for well-understood device types where standards substantially cover safety and performance. Reviewers still expect summary information demonstrating conformance.

Common pitfalls

•A common pitfall is the assumption that no testing data is required; instead, summary reports demonstrating conformance to recognized standards or special controls are necessary.
•Failing to adequately cite or demonstrate compliance with all applicable sections of relevant guidance documents or standards can lead to delays.
•Manufacturers sometimes incorrectly assume that an Abbreviated 510(k) is suitable for novel devices without clear predicate devices or recognized standards.
•Submitting an Abbreviated 510(k) without a thorough understanding of the specific requirements for summary reports can result in a request for additional information or a refuse to accept decision.

Sources

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Regulatory

Special 510(k)(Special 510(k))

In one line

Streamlined 510(k) for modifications to a manufacturer's own legally marketed device.

Definition

A Special 510(k) relies on design control procedures to support a determination of substantial equivalence for changes to the submitter's own predicate, with a target FDA review goal of 30 days. A Special 510(k) suits a change to the manufacturer's own cleared device where the methods used to evaluate the change are well established and the results can be reviewed in a summary or risk analysis format. FDA aims to complete review within 30 days. If the change needs a novel test method or detailed data review, a Traditional 510(k) is usually required instead. FDA's 2019 guidance on the Special 510(k) Program sets out the criteria.

Why it matters

Best when the modification's effects can be assessed via verification and validation methods with well-established performance criteria. Not appropriate for changes to indications for use.

Common pitfalls

•A common pitfall is submitting a Special 510(k) for changes that significantly alter the device's technology or intended use, leading to a rejection or a request for a Traditional 510(k).
•Misjudging the appropriate level of verification and validation needed for the modification can result in an incomplete submission.
•Failing to clearly document the link between the design changes and the supporting verification and validation activities is a frequent mistake.
•Assuming a 30-day review timeline is guaranteed, as the actual review time can be longer if deficiencies are identified.
•Submitting a Special 510(k) for modifications that introduce new risks or significantly impact patient safety is inappropriate and will be rejected.

Sources

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Why compare MedTech terms side by side?

MedTech terminology is full of pairs that look interchangeable but carry very different regulatory, clinical, and commercial consequences. Picking the wrong framework, pathway, or standard early in a project can add months to a submission, invalidate clinical evidence, or trigger an audit finding. Side-by-side comparison is the fastest way to surface those differences before they become costly mistakes.

Each comparison on this page pulls from the same vendor-neutral, sourced definitions used throughout the MedTech Terms glossary. You see the one-line summary, the formal definition, why it matters in practice, common pitfalls, and the primary sources (FDA guidance, EU MDR/IVDR articles, ISO/IEC standards, MDCG documents, IMDRF principles) that back each entry. That makes the comparison defensible in regulatory strategy memos, design reviews, and submission narratives.

Common comparison patterns

Regulatory pathway choice - 510(k) vs PMA, 510(k) vs De Novo, Abbreviated vs Special 510(k).
Quality systems - QSR vs ISO 13485, QMSR vs QSR.
Software classification - SaMD vs SiMD, Locked vs adaptive AI.
EU frameworks - MDR vs IVDR, CE Mark vs UKCA.
Cybersecurity artifacts - SPDX vs CycloneDX SBOM, CVE vs CVSS.
Post-market actions - Recall vs field action, Removal vs correction.

How to use this tool

Pick term A and term B from the dropdowns, or click a preset above. The URL updates with both slugs so you can bookmark or share the exact comparison with a colleague, a notified body reviewer, or your regulatory consultant. Click Open full page on either side for the complete entry, including FAQs, related terms, and the full citation list. If you are not sure which term to start with, browse the Categories view or the A-Z index.

MedTech Terms is a vendor-neutral community resource sponsored by Blue Goat Cyber. Definitions are written for educational use and are not legal or regulatory advice.