IMJClass II

Diathermy, Shortwave, For Use In Applying Therapeutic Deep Heat

21 CFR 890.5290 / Physical Medicine

IMJ is the FDA product code for Diathermy, Shortwave, For Use In Applying Therapeutic Deep Heat, a class II device type, regulated under 21 CFR 890.5290. As of 2026-09-10, FDA records hold 45 510(k) clearances under this code, the most recent dated 2026-06-12, and one recall.

Classification record

Product code: IMJ
Device name: Diathermy, Shortwave, For Use In Applying Therapeutic Deep Heat
Regulation: 21 CFR 890.5290
Device class: Class II
Review panel: Physical Medicine
Submission type: 510(k)
Implant: No
Life sustaining or supporting: No
GMP exempt: No
Third party review eligible: Yes
Ingested clearances: 45
Ingested recalls: 1

Clearances, product code IMJ

By decision year

45 clearances under product code IMJ with a decision year between 1977 and 2026, 1986 the highest year at 9.

Show the numbers

510(k) clearances under FDA product code IMJ by decision year
Year	Clearances
1977	1
1978	4
1984	2
1985	3
1986	9
1987	2
1995	1
1997	3
1998	1
2002	2
2003	2
2004	1
2009	1
2012	1
2014	3
2016	3
2018	1
2019	1
2023	1
2025	2
2026	1

Applicants with the most clearances

Product code IMJ

Applicants holding the most 510(k) clearances under product code IMJ
Applicant	Clearances
BTL Industries, Inc	3
Rich-Mar Corp.	3
Ehti Medical Corp.	2
General Theraphysical, Inc.	2
Henley Intl.	2
Intl. Medical Electronics, Ltd.	2
Mettler Electronics Corp	2
Nemectron Medical, Inc.	2
Selicor, Inc.	2
Viatherm Therapeutics, LLC	2

Companies listing this code with FDA

Companies whose registered establishments list this code

12 of 14 companies shown, in name order