National Library of Medicine Call Numbers: Home
National Library of Medicine Call Numbers
HSL uses the National Library of Medicine classification system to assign call numbers which organize books into broad subject areas.
Consult the Libraries' Catalog or The National Library of Medicine to identify books, journals, and media in your subject area. Be sure to check the Libraries' Catalog for local holdings.
Call Numbers with Corresponding Subject Areas
| NLM Call Number | NLM Subject Area |
|---|---|
| QS 1-132 | Human Anatomy |
| QS 504-532.5 | Histology |
| QS 604-681 | Embryology |
| QT 1-33.1 | Physiology (General) |
| QT 34-37.5 | Physics, Mathematics, and Engineering (Biomedical) |
| QT 104-172 | Human Physiology |
| QT 180-275 | Physiology and Hygiene |
| QT 261 | Sports Medicine |
| QU 1-220 | Biochemistry |
| QV 1-370 | Pharmacology (General) |
| QV 600-667 | Toxicology |
| QV 701-835 | Pharmacy and Pharmaceutics |
| QW 1-300 | Microbiology |
| QW 501-949 | Immunology |
| QX 1-675 | Parasitology |
| QY 1-350 | Clinical Pathology (General) |
| QY 400-490 | Blood |
| QZ 1-380 | Pathology |
| NLM Call Number | NLM Subject Area |
|---|---|
| W 1-96 | Health Professions (General) |
| W 100-275 | Medical, Dental, and Pharmaceutical Service Plans |
| W 322-323 | Medical Social Work and Medical Missions |
| W 601-925 | Forensic Medicine and Dentistry |
| WA 1-106 | Public Health (General) |
| WA 108-245 | Preventive Medicine |
| WA 250-292 | Prevention of Accident and Injury |
| WA 300-395 | Health Problems of Special Population Groups |
| WA 400-495 | Occupational Medicine, Health, and Hygiene |
| WA 525-590 | Health Administration and Organization |
| WA 670-847 | Sanitation and Environmental Control |
| WA 900-950 | Public Health Statistics and Surveys |
| WB 1-130 | Practice of Medicine (General) |
| WB 141-293 | General Diagnosis |
| WB 300-962 | Therapeutics |
| WB 400-449 | Diets and Dietetics |
| WB 460 | Physical Medicine and Physical Therapy |
| WB 555 | Occupational Therapy |
| WB 890-962 | Special Systems of Therapeutics. Alternative Medicine |
| WC 1-950 | Communicable Diseases |
| WC 140-185 | Sexually Transmitted Diseases |
| WC 195 | Infection. Cross Infections. Laboratory Infections. |
| WC 200-425 | Bacterial Infections |
| WC 450-475 | Mycoses |
| WC 500-593 | Virus Diseases |
| WC 503-503.7 | Acquired Immunodeficiency Syndrome. HIV Infections |
| WC 600-660 | Rickettsial and Chlamydial Infections. Tick-borne Diseases |
| WC 680 | Tropical Diseases |
| WC 695-900 | Parasitic Diseases |
| WC 950 | Zoonoses |
| WD 100-175 | Nutrition Disorders |
| WD 200-226 | Metabolic Diseases |
| WD 300-375 | Immunologic and Collagen Diseases. Hypersensitivity |
| WD 400-430 | Animal Poisons |
| WD 500-530 | Plant Poisons |
| WD 600-670 | Diseases and Injuries Caused by Physical Agents |
| WD 700-758 | Aviation and Space Medicine |
| NLM Call Number | NLM Subject Area |
|---|---|
| WE 1-190 | Musculoskeletal System (General) |
| WE 200-600 | Musculoskeletal System by Tissue |
| WE 700-890 | Musculoskeletal System by Region |
| WF 1-900 | Respiratory System (General) |
| WF 970-985 | Thorax and Thoracic Surgery |
| WG 1-170 | Cardiovascular System (General) |
| WG 200-460 | Heart |
| WG 500-700 | Blood Vessels |
| WH 1-700 | Hemic and Lymphatic Systems |
| WI 1-250 | Digestive System (General) |
| WI 300-387 | Stomach |
| WI 400-575 | Intestines |
| WI 600-650 | Anus and Rectum |
| WI 700-770 | Liver and Biliary Tract |
| WI 800-820 | Pancreas |
| WI 900-970 | Abdomen and Abdominal Surgery |
| WJ 1-190 | Urogenital System (General) |
| WJ 300-378 | Kidney |
| WJ 400 | Ureter |
| WJ 500-504 | Bladder |
| WJ 600 | Urethra |
| WJ 700-875 | Male Genitalia |
| WK 1-190 | Endocrine System (General) |
| WK 200-280 | Thyroid Gland |
| WK 300 | Parathyroid Glands |
| WK 350 | Pineal Body |
| WK 400 | Thymus Gland |
| WK 500-590 | Pituitary Gland |
| WK 700-790 | Adrenal Glands |
| WK 800-885 | Islets of Langerhans |
| WK 900-920 | Gonads |
| WL 1-203 | Nervous System (General) |
| WL 300-405 | Central Nervous System |
| WL 500-544 | Peripheral Nerves |
| WL 600-610 | Autonomic Nervous System |
| WL 700-710 | Sense Organs |
| NLM Call Number | NLM Subject Area |
|---|---|
| WM 1-611 | Psychiatry |
| WM 170-184 | Neuroses |
| WM 200-220 | Psychoses |
| WM 270-290 | Substance Dependence. Substance Abuse. |
| WM 400-460.7 | Therapy |
| WM 475-476.6 | Communicative Disorders. Speech-language Pathology. |
| WN 1-160 | Radiology, Diagnostic Imaging (General) |
| WN 180-240 | Diagnostic Imaging. Radiography. |
| WN 250-250.5 | Radiotherapy |
| WN 300-340 | Radium |
| WN 415-665 | Radioactivity (Excluding Roentgen Rays and Radium) |
| WO 1-75 | Surgery (General) |
| WO 100-149 | General Surgery |
| WO 162-198 | Surgical Procedures and Armamentarium |
| WO 200-460 | Anesthesia |
| WO 500-517 | Operative Surgery and Surgical Techniques |
| WO 600-640 | Plastic Surgery |
| WO 660-690 | Transplantation |
| WO 700-820 | Traumatic, Industrial, and Emergency Surgery |
| WO 925-950 | Surgery in Special Age Groups |
| WP 1-390 | Gynecology (General) |
| WP 400-480 | Uterus and Cervix Uteri |
| WP 505-660 | Physiology and Functional Disorders |
| WP 800-910 | Breast |
| NLM Call Number | NLM Subject Area |
|---|---|
| WQ 1-175 | Obstetrics (General) |
| WQ 200-260 | Pregnancy |
| WQ 300-330 | Labor |
| WQ 400-450 | Obstetrical Surgery |
| WQ 500-505 | Puerperium |
| WR 1-660 | Dermatology |
| WS 1-141 | Pediatrics (General) |
| WS 200-463 | Diseases of Children |
| WS 260-368 | Pediatrics by System |
| WS 405-463 | Pediatrics by Age Group |
| WT 1-39 | Geriatrics (General) |
| WT 100-166 | Geriatrics |
| WT 500 | Chronic Disease |
| WU 1-290 | Dentistry, Oral Surgery (General) |
| WU 300-360 | Operative Dentistry |
| WU 400-440 | Orthodontics |
| WU 470-490 | Special Groups |
| WU 500-530 | Prosthodontics |
| WU 600-640 | Oral Surgery |
| WV 1-190 | Otolaryngology |
| WV 200-290 | Ear |
| WV 300-358 | Nose and Paranasal Sinuses |
| WV 400-440 | Pharyngeal Region |
| WV 500-540 | Larynx |
| WW 1-100 | Ophthalmology |
| WW 101-170 | Eye |
| WW 202-290 | Parts of the Eye |
| WW 300-320 | Refraction and Errors of Refraction |
| WW 350-358 | Corrective Devices |
| WW 400-460 | Neuromuscular Mechanism |
| WW 475-480 | Problems Associated with Eye Diseases |
| WW 505-525 | Occupational and Traumatic Ophthalmology |
| WW 600-620 | Age Groups |
| WW 704-722.1 | Optometry |
| WX 1-147 | Hospitals and Other Health Facilities |
| WX 150-190 | Hospital Administration |
| WX 200-225 | Clinical Departments and Units |
| WY 1-100.5 | Nursing (General) |
| WY 101-145 | Special Fields in Nursing |
| WY 150-164 | Nursing Techniques in Special Fields of Medicine |
| WY 191-200 | Other Nursing Services |
| WY 300 | Nursing by Country |
| WZ 1-40 | History of Medicine (General) |
| WZ 51-80.5 | History, by Period, Locality, etc. |
| WZ 100-150 | Biography |
| WZ 220-225 | Manuscripts |
| WZ 230-260 | Early Printed Books |
| WZ 270 | Americana |
| WZ 290-294 | Modern Editions and criticism of Early Works |
| WZ 305-350 | Miscellany Relating to Medicine |
| Z plus NLM or LC Class Number | Bibliography |
