510(k) Report

FDA product code · Neurology

Index-Generating Electroencephalograph Software

OLWClass II21 CFR 882.1400510(k) required40 decisions since 19960 recalls

40 FDA decisions since 1996. 510(k) reviews decided 2021–2025 took a median of 424 days (half between 345 and 549). No recall names this code. The most-cited predicate is K040183, named by 10 later devices.

Analyze electrical activity of the brain by transformation of electroencephalograph signals into a dimensionless index number for use and interpretation by a qualified user.

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, neurology panel

Twenty years of OLW 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 · OLW

1in 2024

2007: 32008: 22015: 12018: 12021: 12022: 12023: 12024: 12026 (partial year): 2
2007high 3 (2007) · low 0 (2009)2026

2026 to Oct 25, outlined.

Median 510(k) review, days · OLW

105in 2007

2007: 105 days median
2007high 105 (2007)2026

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

Recalls per year · OLW

No recall names OLW since 2007.

Adverse event reports per year · OLW

73in 2025

2017: 32018: 32019: 62020: 152021: 152022: 272023: 182024: 932025: 73
2007high 93 (2024) · low 0 (2007)2025

MAUDE reports naming product code OLW, 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
2007310500
20082—00
20090—00
20100—00
20110—00
20120—00
20130—00
20140—00
20151—00
20160—00
20170—03
20181—03
20190—06
20200—015
20211—015
20221—027
20231—018
20241—093
20250—073
20262—0—
FIG. 1 — OLW by year, 2007–2026Sources: FDA decision databases, recall and enforcement reports, MAUDE · Data through Oct 25, 2026

Planning a device in OLW? 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 882.1400.