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

In specific topics, by subject
See also Harm Reduction
Used in evaluation of quality of health care
General
Hospitals and health facilities
Special topics, by subject
Methods
Specific topics, by topic
In a particular subject, with the subject