Classification-Index

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.

Classification 2025 Summer Edition

Worldwide source of medical classification resources

Class Index

← Previous

...

Umbilical Arteries WG 595.U6

Umbilical Cord WQ 210

Umbilical Cord Blood See Fetal Blood

Umbilical Cord Blood Stem Cell Transplantation See Cord Blood Stem Cell Transplantation

Umbilical Hernia See Hernia, Umbilical

Umbilical Veins

General

WI 720

Obstetrics

WQ 210

Umbilicus WE 757

See also Alcohol Drinking in College

Underarm See Axilla

Underemployment See Employment

Undergraduate Medical Education See Education, Medical, Undergraduate

Underground Lakes See Groundwater

Underground Streams See Groundwater

Underground Water See Groundwater

Underinsured See Medically Uninsured

Undernutrition See Malnutrition

Underpopulation See Population Density

Undersea and Hyperbaric Medicine See Diving and Hyperbaric Medicine

Undersea Medicine See Diving and Hyperbaric Medicine

Undertaking See Mortuary Practice

Underuse, Health Services See Health Services Misuse

Underwater and Hyberbaric Medicine See Diving and Hyperbaric Medicine

Underwater Medicine See Diving and Hyperbaric Medicine

Underweight See Thinness

Undescended Testis See Cryptorchidism

Undifferentiated Connective Tissue Disease See Undifferentiated Connective Tissue Diseases

Undifferentiated Connective Tissue Diseases QZ 192

Undifferentiated Lymphoma See Lymphoma, Non-Hodgkin

Undulant Fever See Brucellosis

Unemployment HD 5707.5 - HD 5710.22

Unfractionated Heparin See Heparin

Unguent See Ointments