Brief · Use case · Regulatory
Regulatory Pathway Decision.
LiveDecision MemoChoose between a 510(k), a De Novo request and waiting for more evidence, with each route scored on cost, time, evidence burden and risk, and the one fact that would change the answer.
Regulatory Pathway Decision is a ready-made use case for Regulatory. It ships under the Decision Memo template.
For regulatory and product leads facing a pathway choice that is expensive to reverse. The memo states the decision, names who decides, scores the routes side by side, charts the ranking and tests the recommendation against a pre-mortem. Fees and review goals are cited to their sources or marked as gaps.
Add it to your library to reuse from New → From template. Edit the saved copy in your library on the service form.
The decision
Which US premarket pathway for an AI-based software as a medical device that flags diabetic retinopathy from retinal images: a 510(k) against a predicate, a De Novo request, or delaying to generate more evidence?
The three routes on the table
The memo scores each route on the same five criteria, so the choice rests on your constraints and not on habit.
| Route | What it asks of you | It fits when | FDA user fee, fiscal year 2027 |
|---|---|---|---|
| 510(k) against a predicate | Show that the device is substantially equivalent to a legally marketed predicate. FDA must issue an order finding equivalence before you can market.1,2 | A legally marketed device with the same intended use exists, and your technology is the same or raises no new questions of safety and effectiveness. | $28,653 standard; $7,163 small business |
| De Novo request | Ask FDA to classify a novel device under section 513(f)(2) of the Federal Food, Drug, and Cosmetic Act. If granted, the device can serve as a predicate for later 510(k) submissions.3 | The device is novel and there is no legally marketed predicate to compare it with. | $191,020 standard; $47,755 small business |
| Delay to generate more evidence | Hold the submission, generate the evidence, then choose a route. Nothing is filed, so no FDA fee is paid. | The evidence you hold would not carry either route, or the predicate question is still open. The memo prices the delay in time, runway and competitive position. | None until you file |
Fiscal year 2027 runs from 1 October 2026 to 30 September 2027. FDA fees change each year, so check the schedule for the year you file.4
What the memo does with them
A predicate check, not a guess. The memo says where it searched and what it found. FDA advises choosing the primary predicate closest to your device in indications for use and technological characteristics, and searching its 510(k) database by product code. The memo also looks at FDA’s list of authorized AI-enabled devices. When no defensible predicate turns up, it says so, and what that does to the 510(k) option.2,8
Five criteria, scored the same way for all three routes. Cost, time to decision, evidence burden, regulatory risk and commercial risk. Fees are cited to FDA’s schedule and review times to FDA’s report on its review goals. The scores themselves are analyst judgment, and the memo labels them that way.4,5
The software checks. For an AI-enabled function the memo reads FDA’s January 2025 draft guidance on lifecycle management and marketing submissions, and its final guidance on predetermined change control plans, which let a manufacturer specify planned model changes in the submission. It says plainly that the lifecycle guidance is still a draft.6,7
The software’s risk, in IMDRF terms. The memo describes the software’s risk using the IMDRF framework for software as a medical device, so the regulatory case and the risk case use the same vocabulary.9
How it could fail. The pre-mortem probes the failures this decision tends to invite: the predicate is challenged late, the evidence you hold is not what FDA asks for, the AI model changes before clearance, or the submission window closes while you generate evidence. Each gets an early warning and an owner.
Recommended length
Comprehensive
The decision is expensive to reverse, and the predicate and fee assumptions carry the answer. Comprehensive adds the table that tests each assumption.
You can pick another length on the form. The other two stay available.
Assumptions the memo tests
A Comprehensive memo lists the assumptions that carry the answer, each with a test and a date. A Standard memo carries the main ones in its section on what would change the answer. Examples for this decision:
- A legally marketed device with the same intended use exists.
- The performance evidence you hold is the evidence FDA will ask for.
- The review timeline fits the submission window you set for 30 April 2027.
- The commercial case holds if a route takes longer than planned.
Standards, guidance and sources
FDA pathways
Fees and timing
AI and software guidance
- Draft guidance on AI-enabled device software functions: lifecycle management and marketing submission recommendations, January 2025. It is a draft and does not yet bind FDA or sponsors.6
- Final guidance on marketing submission recommendations for a predetermined change control plan for AI-enabled device software functions.7
- FDA’s list of authorized AI-enabled medical devices, which FDA says is not exhaustive.8
Risk framework
- IMDRF categorization of software as a medical device by the significance of the information it provides and the healthcare situation.9
The decision practice behind the memo itself is on the template page.
What gets flagged
Whether a defensible predicate exists, every fee and review time that is not tied to a current FDA source, and the one fact that would move the recommendation.
What arrives
- Decision requested
- Recommendation
- Context and framing
- Options considered
- Why this option wins
- What must be true
- What would change the answer
- Risks and the pre-mortem
- Path and what we do not know
What it will not do
It does not tell you whether your device qualifies for a route, and it does not predict what FDA will decide. FDA makes that determination. The memo sets out the evidence for and against each route.
It does not replace regulatory counsel or a conversation with FDA.
It does not make the decision. The named decider does.
Scores and weights are analyst judgment from an AI specialist, not measurements. They show how the options compare on the criteria you chose; change the weights and the ranking can change.
It is one specialist’s answer. When you need several specialists to disagree in the open, run a Panel.
Facts the specialist could not source appear as gaps. Regulatory fees, review goals, reference prices and probabilities are cited to their sources or left open. Check any figure you will act on against its primary source.
References
- [1] U.S. Food and Drug Administration. Premarket Notification 510(k). Page last updated 22 August 2024.
- [2] U.S. Food and Drug Administration. How to Find and Effectively Use Predicate Devices. Content current as of 4 September 2018.
- [3] U.S. Food and Drug Administration. De Novo Classification Request. Page last updated 30 September 2025.
- [4] U.S. Food and Drug Administration. Medical Device User Fee Amendments (MDUFA): Fees. Fiscal year 2027 amounts. Fees change each fiscal year. Check the page for the year of your submission.
- [5] U.S. Food and Drug Administration. Performance Report to Congress: Medical Device User Fee Amendments, fiscal year 2025.
- [6] U.S. Food and Drug Administration. Artificial Intelligence-Enabled Device Software Functions: Lifecycle Management and Marketing Submission Recommendations. Draft guidance, January 2025. Docket FDA-2024-D-4488. Draft, not for implementation. Check whether it has been finalized.
- [7] U.S. Food and Drug Administration. Marketing Submission Recommendations for a Predetermined Change Control Plan for Artificial Intelligence-Enabled Device Software Functions. Final guidance, December 2024. Summarized from FDA’s announcement and webinar pages; read the guidance for its content requirements.
- [8] U.S. Food and Drug Administration. List of Artificial Intelligence-Enabled Medical Devices. Updated periodically; FDA reports more than 1,600 authorized devices as of September 2026. FDA says the list is not exhaustive.
- [9] International Medical Device Regulators Forum. Software as a Medical Device: Possible Framework for Risk Categorization and Corresponding Considerations. IMDRF/SaMD WG/N12, 2014. IMDRF has said it intends to revise this document.
Links checked 9 October 2026
These are the sources the template drew on. None of their authors or issuers has reviewed it.
About the Brief service
A Brief is a written answer from one specialist, at the depth you asked for. It arrives with its sources, and it closes by saying plainly what would change the conclusion. Nothing is hidden behind a summary, and anything the expert could not source is marked as a gap rather than filled in.
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