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Title 21

Displaying title 21, up to date as of 6/05/2026. Title 21 was last amended 6/05/2026.
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Title 21Food and DrugsPart / Section
Chapter IFood and Drug Administration, Department of Health and Human Services1 – 1299
Subchapter HMedical Devices800 – 898
Part 890Physical Medicine Devices890.1 – 890.5975
Subpart AGeneral Provisions890.1 – 890.9
§ 890.1Scope.
§ 890.3Effective dates of requirement for premarket approval.
§ 890.9Limitations of exemptions from section 510(k) of the Federal Food, Drug, and Cosmetic Act (the act).
Subpart BPhysical Medicine Diagnostic Devices890.1175 – 890.1925
§ 890.1175Electrode cable.
§ 890.1225Chronaximeter.
§ 890.1375Diagnostic electromyograph.
§ 890.1385Diagnostic electromyograph needle electrode.
§ 890.1450Powered reflex hammer.
§ 890.1575Force-measuring platform.
§ 890.1600Intermittent pressure measurement system.
§ 890.1615Miniature pressure transducer.
§ 890.1850Diagnostic muscle stimulator.
§ 890.1925Isokinetic testing and evaluation system.
Subpart C [Reserved]
Subpart DPhysical Medicine Prosthetic Devices890.3025 – 890.3940
Subpart E [Reserved]
Subpart FPhysical Medicine Therapeutic Devices890.5050 – 890.5975