National Library of Medicine Classification Schedule

Medicine and Related Subjects

Anesthesia WO 200-460
Cardiovascular System WG
Communicable Diseases WC
Dentistry & Oral Surgery WU
Dermatology WR
Digestive System WI
Endocrine System WK
Forensic Medicine & Dentistry W 601-925
Geriatrics WT
Gynecology WP
Health Professions W
Hemic & Lymphatic Systems WH
History of Medicine WZ
Hospitals & Other Health Facilities WX
Immunologic & Collagen Diseases WD 300-375
Metabolic Diseases WD 200-226
Musculoskeletal System WE
Neoplasms QZ 200-380
Nervous System WL
Nuclear Medicine WN 440
Nursing WY
Nutrition Disorders WD 100-175
Obstetrics WQ
Ophthalmology WW
Orthopedics WE 168-190
Otolaryngology WV
Pediatrics WS
Pharmacy & Pharmaceutics QV 701-835
Practice of Medicine WB
Preventive Medicine WA 108-245
Psychiatry WM
Public Health WA
Radiology & Diagnostic Imaging WN
Respiratory System WF
Sports Medicine QT 261
Surgery WO
Therapeutics WB 300-962
Urogenital System WJ

Preclinical Sciences

Biochemistry QU
Clinical Pathology QY
Embryology QS 604-681
Histology QS 504-532.5
Human Anatomy QS 1-132
Immunology QW 501-949
Microbiology QW 1-300
Nutrition QU 145-220
Parasitology QX
Pathology QZ
Pharmacology QV 1-370
Physiology QT
Psychology BF
Toxicology QV 600-699