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
WA 250 - WA 288
In health facilities
WX 185
In occupational settings
WA 485 - WA 491
In specific types of facilities, class with type of facility in the number for administration if number for safety or accident prevention is unavailable
In the general works number if safety or accident prevention numbers are lacking
See also Radiation Protection