Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Skip to main content
National Library of Medicine logo

Classification 2025 Summer Edition

Worldwide source of medical classification resources

Class Index

non-alpha A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

General
Biography
Collective
Individual
As a profession
Veterinary medicine
SF 757.8
See also Radiation
See also Radiologists
General
Biography
Collective
Individual
General
Equipment
General
Cerebral
Other specific organ or system, by site
General
Cardiovascular diseases (General)
Localized, by site or disease
Adverse effects
Diagnostic use
Therapeutic use
Used for special purposes, by subject