510(k) Report

FDA product code · Radiology

Media, Coupling, Ultrasound

MUIClass II21 CFR 892.1570510(k) required34 decisions since 19823 recalls

34 FDA decisions since 1982. 510(k) reviews decided 2021–2025 took a median of 57 days (half between 54 and 85). 3 recalls name this code, 0 of them Class I. The most-cited predicate is K181363, named by 4 later devices.

Data to Oct 25, 2026 (FDA decisions) Oct 12, 2026 (recalls) Sep 30, 2026 (MAUDE) refreshed weekly, last Nov 3, 2026 Download the data (CSV)

FIG. A — Illustration, radiology panel

Twenty years of MUI at a glance: how often FDA decides these devices, how long 510(k) reviews take, how often they are recalled, and how many adverse event reports name the code.

FDA decisions per year · MUI

2in 2024

2007: 12009: 12011: 22012: 22013: 22014: 12016: 12017: 12018: 52019: 12021: 12022: 12023: 12024: 22026 (partial year): 2
2007high 5 (2018) · low 0 (2008)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · MUI

434in 2018

2018: 434 days median
2007high 434 (2018)2026

Receipt to decision; years with fewer than 3 clearances left blank.

Recalls per year · MUI

1in 2023

2012: 22023: 1
2007high 2 (2012) · low 0 (2007)2026

Class I (0 since 2007) Class II/III not classified

Adverse event reports per year · MUI

25in 2025

2008: 22009: 22010: 62012: 12013: 12014: 22018: 22019: 22020: 22021: 132022: 12023: 22024: 22025: 25
2007high 25 (2025) · low 0 (2007)2025

MAUDE reports naming product code MUI, not matched to any one device; reports are not rates.

View these four charts as a table
YearDecisionsMedian 510(k) review, daysRecalls (Class I)MAUDE reports
20071—00
20080—02
20091—02
20100—06
20112—00
20122—21
20132—01
20141—02
20150—00
20161—00
20171—00
2018543402
20191—02
20200—02
20211—013
20221—01
20231—12
20242—02
20250—025
20262—0—
FIG. 1 — MUI by year, 2007–2026Sources: FDA decision databases, recall and enforcement reports, MAUDE · Data through Oct 25, 2026

Planning a device in MUI? A 510(k) Report ranks candidate predicates in this code by lineage, citations and recall history, with the review-time outlook.

See the 510(k) Report

Related product codes

Other codes under 21 CFR 892.1570.