21 CFR § 874.1800 - Air or water caloric stimulator.

---
identifier: "/us/cfr/t21/s874.1800"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "21 CFR § 874.1800 - Air or water caloric stimulator."
title_number: 21
title_name: "Food and Drugs"
section_number: "874.1800"
section_name: "Air or water caloric stimulator."
chapter_name: "FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES"
subchapter_number: "H"
subchapter_name: "MEDICAL DEVICES"
part_number: "874"
part_name: "EAR, NOSE, AND THROAT DEVICES"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 351, 360, 360c, 360e, 360j, 360 371."
regulatory_source: "51 FR 40389, Nov. 6, 1986, unless otherwise noted."
cfr_part: "874"
---


# 874.1800 Air or water caloric stimulator.

(a) *Identification.* An air or water caloric stimulator is a device that delivers a stream of air or water to the ear canal at controlled rates of flow and temperature and that is intended for vestibular function testing of a patient's body balance system. The vestibular stimulation of the semicircular canals produce involuntary eye movements that are measured and recorded by a nystagmograph.

(b) *Classification.* Class I (general controls). The device is exempt from the premarket notification procedures in subpart E of part 807 of this chapter subject to § 874.9.

[55 FR 48440, Nov. 20, 1990, as amended at 65 FR 2316, Jan. 14, 2000]