510(k) Report

FDA product code · Physical medicine

Pack, Hot Or Cold, Water Circulating

ILOClass II21 CFR 890.5720510(k) exempt93 decisions since 197620 recalls

FDA lists ILO as exempt from 510(k): a device of this type needs no clearance unless one of the limits in 21 CFR 890.9 applies, such as a new intended use or a different fundamental technology. 93 FDA decisions since 1976. 510(k) reviews decided 2021–2025 took a median of 259 days (half between 259 and 259). 20 recalls name this code, 0 of them Class I. The most-cited predicate is K964799, named by 2 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, physical medicine panel

Twenty years of ILO 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 · ILO

1in 2022

2007: 22008: 12009: 12022: 1
2007high 2 (2007) · low 0 (2010)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · ILO

Too few ILO 510(k)s in any year since 2007 to give a median.

Recalls per year · ILO

1in 2021

2009: 22011: 12013: 82017: 12021: 12026 (partial year): 4
2007high 8 (2013) · low 0 (2007)2026

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

Adverse event reports per year · ILO

9in 2025

2007: 142008: 122009: 172010: 1712011: 2412012: 652013: 602014: 492015: 602016: 442017: 432018: 402019: 292020: 72021: 142022: 102023: 122024: 102025: 9
2007high 241 (2011) · low 7 (2020)2025

MAUDE reports naming product code ILO, 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
20072—014
20081—012
20091—217
20100—0171
20110—1241
20120—065
20130—860
20140—049
20150—060
20160—044
20170—143
20180—040
20190—029
20200—07
20210—114
20221—010
20230—012
20240—010
20250—09
20260—4—
FIG. 1 — ILO by year, 2007–2026Sources: FDA decision databases, recall and enforcement reports, MAUDE · Data through Oct 25, 2026

Planning a device in ILO? 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