Class Number Ranges

Class Names

QS-QSB

Anatomy. Teratology. Histology. Embryology

QT-QTB

Physiology. Diet. Hygiene

QU-QVB

Biochemistry. Pharmacology. Pharmacy. Toxicology

QW-QX 22

Microbiology. Immunology. Parasitology

QY-QZA

Clinical Pathology. Pathology

W-WBN

Medicine. Public Health. Practice of Medicine

WC-WCK

Communicable Diseases

WD-WDF

Medicine in Selected Environments

WE-WEA

Musculoskeletal System

WF-WG 22

Respiratory System. Cardiovascular System

WH-WH 22

Hemic and Lymphatic Systems

WI-WIC

Digestive System

WJ-WJA

Urogenital System

WK-WKA

Endocrine System

WL-WMB

Nervous System. Psychiatry

WN-WN 22

Radiology

WO-WOB

Surgery. Military Surgery

WP-WQ 22

Gynecology. Obstetrics. Midwifery

WR-WR 22

Dermatology

WS-WS 22

Pediatrics

WT-WT 22

Geriatrics

WU-WUA

Dentistry

WV-WVB

Otolaryngology

WW-WW 22

Ophthalmology

WX-WX 22

Hospitals

WY-WYA

Nursing. Military Nursing

Class Number

Class Names

QS

Anatomy. Teratology

QS 22

      Directories (Table G)

QSA

Histology

QSB

Embryology

QT

Physiology

QT 22

      Directories (Table G)

QTA

Hygiene
      (Use WA for hygiene as public health concept.)

QTB

QTC

Diet

Motion Sickness. Sunstroke. Hyperthermia

QU

Biochemistry

QU 22

QUA

      Directories (Table G)

Deficiency diseases. Metabolic diseases. Obesity

QV

Pharmacology. Pharmacy. Materia medica

QV 22

      Directories (Table G)

QVA

      Pharmacopoeias (Official)

QVB

Toxicology (including plant poisons)
      (Use QWB for animal poisons)

QW

Microbiology

QW 22

      Directories (Table G)

QWA
QWB

Immunology
         Animal poisons

QX

Parasitology

QX 22

      Directories (Table G)

QY

Clinical pathology

[QY 22]

      [Directories. Use QZ 22 ]

QZ

Pathology

QZ 22

      Directories (Table G)

QZA

Neoplasms

W

Medicine (General)

W1

      Serials, Periodicals

W2

      Documents

W3

      Congresses
         NLM no longer assigns W3 to newly acquired publications.

W4

      Dissertations

W4 A

      American dissertations

W5

      Collections by several authors

W6

      Pamphlet volumes

W 22

      Directories (Table G)

W 26

      Equipment and supplies

W 600

      Medical jurisprudence

WA

Public health

WA 22

      Directories (Table G)

WAA

      Sanitation.Water supply

WAB

      Military hygiene

WAC

      Relief work. Disaster

WB

Practice of medicine

WB 22

      Directories (Table G)

WBA

      Popular medicine. Domestic medicine

WBB

      Diagnosis

WBC

      Therapeutics (General)

WBD

      Dietetics. Diet therapy

WBE

      Electric stimulation therapy. Magnetic field therapy. Galvanism

WBF

      Hydrotherapy

WBG

      Massage

WBH

      Climatotherapy. Geography of disease. Medical topography

WBI

      Health resorts. Balneology

WBJ

      Special systems (General)

WBK

          Homeopathy

WBL

          Osteopathic medicine

[WBM]

      [This number not used]

Use WDE for Military medicine

[WBN]

      [This number not used]

Use WDF for Naval medicine

WC

Communicable diseases (General)

WC 22

      Directories (Table G)

WCA

      Sexually transmitted diseases

WCB

      Cholera

WCC

      Diphtheria

WCD

      Influenza

WCE

      Leprosy

WCF

      Malaria

WCG

      Plague

WCH

      Smallpox

WCI

      Typhoid fever

WCJ

      Typhus fever

WCK

WD

[WDA]

      Yellow fever

Medicine in selected environments

[This number not used]

Use QUA for Deficiency diseases. Metabolic diseases. Obesity

[WDB]

[This number not used]

[WDC]

[This number not used]
      Use QWB for animal poisons; use QVB for plant poisons)

WDD

WDE

WDF

Barotrauma

      Use QTC for Motion Sickness. Sunstroke. Hyperthermia

Military medicine

Naval medicine

WE

Musculoskeletal system. Orthopedics

WE 22

      Directories (Table G)

WEA

      Fractures. Dislocations. Sprains

WF

Respiratory system

WF 22

      Directories (Table G)

WFA

      Tuberculosis

WG

Cardiovascular system

WG 22

      Directories (Table G)

WH

Hemic and lymphatic systems

WH 22

      Directories (Table G)

WI

Digestive system

WI 22

      Directories (Table G)

WIA

      Stomach

WIB

      Anus and rectum

WIC

      Liver

WJ

Urogenital system

WJ 22

      Directories (Table G)

WJA

      Male genitalia

WK

Endocrine system

WK 22

      Directories (Table G)

WKA

      Diabetes

WL

Nervous system

WL 22

      Directories (Table G)

WLA

      Epilepsies

WM

Psychiatry. Mental healing. Hypnosis therapy
       (Use BF for parapsychological aspects of hypnosis)

WM 22

      Directories (Table G)

WMA

      Substance-related disorders

WMB

      Military psychiatry

WN

Radiology

WN 22

      Directories (Table G)

WO

Surgery. Wounds and Injuries

WO 22

      Directories (Table G)

WOA

      Anesthesia

WOB

      Military surgery

WP

Gynecology

WP 22

      Directories (Table G)

WPA

      Breast

WQ

Obstetrics. Midwifery

WQ 22

      Directories (Table G)

WR

Dermatology

WR 22

      Directories (Table G)

WS

Pediatrics

WS 22

      Directories (Table G)

WT

Geriatrics. Chronic disease. Longevity

WT 22

      Directories (Table G)

WU

Dentistry. Oral surgery

WU 22

      Directories (Table G)

WUA

      Military dentistry

WV

Otolaryngology. Nose

WV 22

      Directories (Table G)

WVA

      Ear

WVB

      Throat. Larynx

WW

Ophthalmology

WW 22

      Directories (Table G)

WX

Hospitals

WX 2

      Serial reports of hospitals (Table G)

WX 22

      Directories (Table G)

WY

Nursing

WY 22

      Directories (Table G)

WYA

      Military nursing

WZ

History of medicine
       Use WZ schedule in full.