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Health Sciences Library Classification Scheme

For information on a specific book or subject, consult the Arrangement of Classified Collections (by subject), the Catalog, or ask for assistance at the User Services Desk, (919) 962-0800.

SubjectCall Number Range  SubjectCall Number Range
Accident and InjuryWA 250-295Hospitals and Health FacilitiesWX
AIDSWC 503-503.7HypersensitivityWD 300-375
Allergy and ImmunologyQW 501-949InformaticsW 26.5
Alternative MedicineWB503-507Insurance, HealthW 100-275
AnatomyQSInternal MedicineWB 115
AnesthesiologyWO 200-460Laboratory MedicineQY
BacteriologyQW 1-155Maternal Welfare, ServicesWA 310
BiochemistryQUMedicaidW 250
BiographyWZ 100Medical PracticeWB
Biology, Molecular BiologyQHMedical ProfessionW
BiostatisticsWA 950MedicareWT 31
BiotechnologyQT 34, TMedicinal PlantsQV 766-770
Birth DefectsQS 675Metabolic DiseasesWD 200
Cardiovascular SystemWGMicrobiologyQW 1-300
CensusHAMilitary MedicineUH 201-570
ChemistryQDMolecular BiologyQH 506
Child Welfare, Abuse, ServicesWA 310-325Musculoskeletal SystemWE
Chronic DiseaseWT 500Neoplasms (general)QZ200-380
Communicable DiseasesWCNervous System; NeurologyWL
Deficiency DiseasesWD 105-155NursingWY
DemographicsHANutritionQU 145-220
Dentistry and Oral SurgeryWUObstetricsWQ
DermatologyWROccupational Health and HygieneWA 400-495
Diagnostic ImagingWNOphthalmologyWW
Dictionaries (general medical)W 13OrthopedicsWE
Dietetics, Diet TherapyWB 400-449OtolaryngologyWV
Digestive SystemWIParisitologyQX
DisabilityHV; WB 320PathologyQY-QZ
DrugsQV 1-370PediatricsWS
Economics of Medicine and Health CareW 74-80PharmacologyQV
EmbryologyQS -681PhysiologyQT
Endocrine SystemWKPreventive MedicineWA 108-245
Environmental Health, Pollution, ControlWA 670-847Psychiatry, Mental HealthWM
Environmental Science and TechnologyWA 105-106PsychologyBF
Ethics (medical)W 50Public HealthWA
Family HealthWA 308RadiologyWN
Forensic MedicineW 601-925RehabilitationWB 320
Gastrointestinal SystemWIRespiratory SystemWF
GeneticsQH 426-470, QZ 50Social IssuesHV
GeriatricsWTSpeech and HearingWV
GynecologyWPSports MedicineQT 260-261
Health of Special PopulationsWA 300-495Statistics, Health SurveysW 2, WA 900-950
Health Policy, Planning, AdminWA 525-590Substance AbuseWM 270
Health ProfessionsW 21SurgeryWO
Health ServicesW 84-84.9ToxicologyQV 600-667; WA 465
HematologyWHUrogenital SystemWJ
HistologyQS504-539Veterinary MedicineSF
History of MedicineWZWomen's HealthWA 309

Arrangement of Classified Collections (by subject)

National Library of Medicine Classification Outline

Preclinical Sciences

QS........Human Anatomy  QW.......Microbiology and Immunology
QT........PhysiologyQX........Parasitology
QU........BiochemistryQY........Clinical Pathology
QV........PharmacologyQZ........Pathology

Medicine and Related Subjects

W...Health Professions  WK...Endocrine System
WA...Public HealthWL...Nervous System
WB...Practice of MedicineWM...Psychiatry
WC...Communicable DiseasesWN...Radiology. Diagnostic Imaging
WD 100...Nutrition DisordersWO...Surgery
WD 200...Metabolic DiseasesWP...Gynecology
WD 300...Immunologic and Collagen Diseases. HypersensitivityWQ...Obstetrics
WD 400...Animal PoisonsWR...Dermatology
WD 500...Plant PoisonsWS...Pediatrics
WD 600...Diseases and Injuries Caused by Physical AgentsWT...Geriatrics. Chronic Disease
WD 700...Aviation and Space MedicineWU...Dentistry. Oral Surgery
WE...Musculoskeletal SystemWV...Otolaryngology
WF...Respiratory SystemWW...Opthamology
WG...Cardiovascular SystemWX...Hospitals and Other Health Facilities
WH...Hemic and Lymphatic SystemsWY...Nursing
WI...Digestive SystemWZ...History of Medicine
WJ...Urogenital System