Classification-Index

Classification 2025 Summer Edition

Worldwide source of medical classification resources

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Class Index

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Unknown Primary Neoplasms See Neoplasms, Unknown Primary

Unknown Primary Tumors See Neoplasms, Unknown Primary

Unlawful Behavior See Criminal Behavior

Unmarried See Single Person

Unmarried Fathers See Illegitimacy

Unmarried Mothers See Illegitimacy

Unmedicated IUDs See Intrauterine Devices

Unnecessary Procedures

General

W 84

Specific procedure, by procedure

Unnecessary Surgery See Unnecessary Procedures

Uno-Vit See Tocopherols

Unplanned Hospital Readmissions See Patient Readmission

Unplanned Pregnancy See Pregnancy, Unplanned

Unplanned Readmission See Patient Readmission

Unprofessional Behavior See Professional Misconduct

Unprotected Intercourse See Unsafe Sex

Unprotected Sex See Unsafe Sex

Unsafe Sex

General

WM 620

As a cause of pregnancy

WQ 200

In adolescents

WS 462

As a cause of a specific diseases with the disease

Unsaturated Dietary Fats See Dietary Fats, Unsaturated

Unsaturated Fat See Fats, Unsaturated

Unsaturated Fats See Fats, Unsaturated

Unsaturated Fatty Acid See Fatty Acids, Unsaturated

Unsaturated Hydrocarbons See Hydrocarbons

Unsaturated Oils See Fats, Unsaturated

Unstable Angina See Angina, Unstable

Unstructured Protein See Intrinsically Disordered Proteins

Unstructured Proteins See Intrinsically Disordered Proteins

Untrained Personnel See Volunteers

Untufted Capuchins See Cebus

Unventilated Spaces See Confined Spaces

Unwanted Births See Child, Unwanted

Unwanted Children See Child, Unwanted

Unwanted Pregnancies See Pregnancy, Unwanted

UPLC See Chromatography, High Pressure Liquid

Upper Aerodigestive Tract Neoplasm See Head and Neck Neoplasms

Upper Aerodigestive Tract Neoplasms See Head and Neck Neoplasms

Upper Arm See Arm

Upper Extremity WE 805

See also names of specific parts of the upper extremity