FDA Recognizes 14 Updated Medical Device Standards

FDA has modified the list of consensus standards it recognizes for medical device premarket review, publishing Recognition List Number 066 in the Federal Register on 24 August 2026. Fourteen standards were updated across electrosurgery, neurology, cardiovascular devices, and dialysis. The document is routine in form — FDA issues these lists two or three times a year — and consequential in effect: a recognized standard is the shortcut that lets a manufacturer declare conformity instead of building the evidence from scratch, and the list is what decides which version of that shortcut still works.

What a recognition list actually does

Under the FDA Modernization Act of 1997, FDA maintains a list of national and international consensus standards it recognizes for use in premarket submissions. A manufacturer that elects to conform to a recognized standard can submit a declaration of conformity in place of the underlying test data, which shortens both the submission and the review. Nothing about the scheme is mandatory — conformity is voluntary, and a sponsor can always meet a requirement another way — but in practice the recognized list is the default route for the parts of a device file that are well-trodden.

The list is not static. Standards bodies revise their documents, and FDA periodically publishes a modification notice that does four things: adds standards, withdraws standards and names their replacements where applicable, corrects errors in previously recognized entries, and revises the supplemental information sheets that describe how far a recognition reaches. Recognition List Number 066 is the current instalment. The list is FDA's own numbering for the modifications, not a version of the standards themselves.

What is in list 066

• Electrosurgery: IEC 60601-2-2, the corrected 2025 consolidated edition on safety and essential performance of high-frequency surgical equipment and accessories, recognized completely.
• Neurology: IEC 80601-2-26, first edition, on the basic safety and essential performance of electroencephalographs, recognized partially.
• Cardiovascular: ISO 5840-2 (surgically implanted heart valve substitutes) and ISO 5840-3 (transcatheter heart valve substitutes) recognized completely; ISO 5840-1, the general requirements for cardiac valve prostheses, recognized partially.
• Dialysis: all five parts of the ISO 23500 series on preparation and quality management of fluids for haemodialysis and related therapies. Parts 2, 3 and 5 — water treatment equipment, water quality, and dialysis fluid quality — recognized completely; parts 1 and 4 — general requirements and concentrates — recognized partially.

Partial recognition is the operative detail

The split between complete and partial recognition is where a submission plan either holds or does not. A complete recognition means a declaration of conformity to the standard as published is acceptable on its face. A partial recognition means FDA has carved something out — a clause, an annex, a test method it does not consider adequate for the requirement in question — and the carve-out lives in the standard's supplemental information sheet, not in the Federal Register notice. A sponsor relying on a partially recognized standard has to read the sheet and, where the exception touches its device, supply the evidence itself.

That matters most for the three families in this list where partial recognition appears. ISO 5840-1 sets the general requirements every heart valve substitute is measured against, so its exceptions ripple into files that also cite the completely recognized 5840-2 and 5840-3. The ISO 23500 series is read as a set, and parts 1 and 4 sit upstream of the three parts recognized completely. And IEC 80601-2-26 is a first edition, which is precisely the situation where an agency tends to hold something back.

What to do with it

For a device file in preparation, the practical step is unglamorous: pull each cited standard from FDA's searchable recognized-standards database, confirm the recognition number now in force, and read the supplemental information sheet for the transition period and the exceptions. Transition periods are not uniform — FDA sets them per standard according to how much the revision changed, and the sheet is the only place the length is stated. Continuing to declare conformity to a superseded version is permitted inside that window; assuming a window exists, or guessing its length, is not a plan. The same discipline applies to design files already closed: a standard withdrawn today does not invalidate a cleared device, but it does change what the next submission can lean on.