title: Library of Congress Classification:Class R -- Medicine
text: # Library of Congress Classification:Class R -- Medicine
  
  Class R:Medicine is a classification used by the Library of Congress Classification system. This page outlines the subclasses of Class R.
  
  ## R - Medicine (General)
  
      5-130.5......................................General works
      131-687.....................................History of medicine. Medical expeditions
      690-697.....................................Medicine as a profession. Physicians
      702-703.....................................Medicine and the humanities. Medicine and disease in relation to history, literature, etc.
      711-713.97................................Directories
      722-722.32................................Missionary medicine. Medical missionaries
      723-726.....................................Medical philosophy. Medical ethics
      726.5-726.8...............................Medicine and disease in relation to psychology. Terminal care. Dying
      727-727.5..................................Medical personnel and the public. Physician and the public
      728-733.....................................Practice of medicine. Medical practice economics
      735-854.....................................Medical education. Medical schools. Research
      855-855.5..................................Medical technology
      856-857.....................................Biomedical engineering. Electronics. Instrumentation
      858-859.7..................................Computer applications to medicine. Medical informatics
      864............................................Medical records
      895-920.....................................Medical physics. Medical radiology. Nuclear medicine
  
  ## RA - Public aspects of medicine
  
      1-418.5....................................Medicine and the state
         396................................................Regulation of medical education. Licensure
         398................................................Registration of physicians, pharmacists, etc.
         399................................................Regulation of medical practice. Evaluation and quality control of medical care. Medical audit
         405................................................Death certification
         407-409.5......................................Health status indicators. Medical statistics and surveys
         410-410.9......................................Medical economics. Economics of medical care. Employment
         411-415.........................................Provisions for personal medical care. Medical care plans
         418-418.5......................................Medicine and society. Social medicine. Medical sociology
      421-790.95..............................Public health. Hygiene. Preventive medicine
         428-428.5......................................Public health laboratories, institutes, etc.
         440-440.87....................................Study and teaching. Research
         565-600.........................................Environmental health Including sewage disposal, air pollution, nuisances, water supply
         601-602.........................................Food and food supply in relation to public health
         604-618.........................................Parks, public baths, public carriers, buildings, etc.
         619-637.........................................Disposal of the dead. Undertaking. Burial. Cremation. Cemeteries
         638................................................Immunity and immunization in relation to public health
         639-642.........................................Transmission of disease
         643-645.........................................Disease (Communicable and noninfectious) and public health
         645.3-645.37.................................Home health care services
         645.5-645.9...................................Emergency medical services
         646-648.3......................................War and public health
         648.5-767......................................Epidemics. Epidemiology. Quarantine. Disinfection
         771-771.7......................................Rural health and hygiene. Rural health services
         773-788.........................................Personal health and hygiene Including clothing, bathing, exercise, travel, nutrition, sleep, sex hygiene
         790-790.95....................................Mental health. Mental illness prevention
      791-954...................................Medical geography. Climatology. Meteorology
      960-1000.5..............................Medical centers. Hospitals. Dispensaries. Clinics. Including ambulance service, nursing homes, hospices
      1001-1171...............................Forensic medicine. Medical jurisprudence. Legal medicine
      1190-1270...............................Toxicology. Poisons
  
  ## RB - Pathology
  
      1-17........................................General works
      24-33.......................................Pathological anatomy and histology
      37-56.5....................................Clinical pathology. Laboratory technique
      57...........................................Post-mortem examination. Autopsies
      127-150...................................Manifestations of disease
      151-214...................................Theories of disease. Etiology. Pathogenesis
  
  ## RC - Internal medicine
  
      49-52.......................................Psychosomatic medicine
      71-78.7....................................Examination. Diagnosis Including radiography
      81-82.......................................Popular medicine
      86-88.9....................................Medical emergencies. Critical care. Intensive care. First aid
      91-103.....................................Disease due to physical and chemical agents
      109-216...................................Infectious and parasitic diseases
      251..........................................Constitutional diseases (General)
      254-282...................................Neoplasms. Tumors. Oncology Including cancer and carcinogens
      306-320.5................................Tuberculosis
      321-571...................................Neurosciences. Biological psychiatry. Neuropsychiatry
         346-429.........................................Neurology. Diseases of the nervous system Including speech disorders
         435-571...............................................Psychiatry
            475-489.....................................................Therapeutics. Psychotherapy
            490-499.....................................................Hypnotism and hypnosis. Suggestion therapy
            500-510.....................................................Psychoanalysis
            512-569.5..................................................Psychopathology
               512-528...........................................................Psychoses
               530-552...........................................................Neuroses
               554-569.5........................................................Personality disorders. Behavior problems Including sexual problems, drug abuse, suicide, child abuse
            569.7-571..................................................Mental retardation. Developmental disabilities
      581-951...................................Specialties of internal medicine
         581-607.........................................Immunologic diseases. Allergy
         620-627.........................................Nutritional diseases. Deficiency diseases
         627.5-632......................................Metabolic diseases
         633-647.5......................................Diseases of the blood and blood-forming organs
         648-665.........................................Diseases of the endocrine glands. Clinical endocrinology
         666-701.........................................Diseases of the circulatory (Cardiovascular) system
         705-779.........................................Diseases of the respiratory system
         799-869.........................................Diseases of the digestive system. Gastroenterology
         870-923.........................................Diseases of the genitourinary system. Urology
         924-924.5......................................Diseases of the connective tissues
         925-935.........................................Diseases of the musculoskeletal system
      952-1245.................................Special situations and conditions
         952-954.6......................................Geriatrics
         955-962.........................................Arctic medicine. Tropical medicine
         963-969.........................................Industrial medicine. Industrial hygiene
         970-986.........................................Military medicine. Naval medicine
         1000-1020.....................................Submarine medicine
         1030-1160.....................................Transportation medicine Including automotive, aviation, and space medicine
         1200-1245.....................................Sports medicine
  
  ## RD - Surgery
  
      1-31.7.....................................General works
      32-33.9....................................Operative surgery. Technique of surgical operations
      49-52.......................................Surgical therapeutics. Preoperative and postoperative care
      57...........................................Surgical pathology
      58...........................................Reparative processes after operations (Physiological)
      59...........................................Surgical shock. Traumatic shock
      63-76.......................................Operating rooms and theaters. Instruments, apparatus, and appliances
      78.3-87.3.................................Anesthesiology
      91-91.5....................................Asepsis and antisepsis. Sterilization (Operative)
      92-97.8....................................Emergency surgery. Wounds and injuries
      98-98.4....................................Surgical complications
      99-99.35..................................Surgical nursing
      101-104...................................Fractures (General)
      118-120.5................................Plastic surgery. Reparative surgery
      120.6-129.8.............................Transplantation of organs, tissues, etc.
      130..........................................Prosthesis. Artificial organs
      137-145...................................Surgery in childhood, adolescence, pregnancy, old age
      151-498...................................Military and naval surgery
      520-599.5................................Surgery by region, system, or organ
      651-678...................................Neoplasms. Tumors. Oncology
      680-688...................................Diseases of the locomotor system (Surgical treatment)
      701-811...................................Orthopedic surgery
         792-811.........................................Physical rehabilitation
  
  ## RE - Ophthalmology
  
      75-79.......................................Examination. Diagnosis
      80-87.......................................Eye surgery
      88............................................Ophthalmic nursing
      89............................................Eye banks
      91-912.....................................Particular diseases of the eye
      918-921...................................Color vision tests, charts, etc.
      925-939...................................Refraction and errors of refraction and accommodation
      939.2-981................................Optometry. Opticians. Eyeglasses
      986-988...................................Artificial eyes and other prostheses
      991-992...................................Ocular therapeutics
  
  ## RF - Otorhinolaryngology
  
      110-320...................................Otology. Diseases of the ear
      341-437...................................Rhinology. Diseases of the nose, accessory sinuses, and nasopharynx
      460-547...................................Laryngology. Diseases of the throat
  
  ## RG - Gynaecology and Obstetrics
  
      104-104.7................................Operative gynecology
      133-137.6................................Conception. Artificial insemination. Contraception
      138.........................................Sterilization of women
      159-208...................................Functional and systemic disorders. Endocrine gynecology
      211-483...................................Abnormalities and diseases of the female genital organs
      484-485...................................Urogynecology and obstetric urology. Urogynecologic surgery
      491-499...................................Diseases of the breast
      500-991...................................Obstetrics
         551-591.........................................Pregnancy
         600-650.........................................The embryo and fetus
            648.....................................................Spontaneous abortion. Miscarriage
         651-721.........................................Labor. Parturition
         725-791.........................................Obstetric operations. Operative obstetrics
         801-871.........................................Puerperal state
         940-991.........................................Maternal care. Prenatal care services
  
  ## RJ - Pediatrics
  
      47.3-47.4.................................Genetic aspects
      50-51.......................................Examination. Diagnosis
      52-53.......................................Therapeutics
      59-60.......................................Infant and neonatal morbidity and mortality
      91............................................Supposed prenatal influence. Prenatal culture. Stirpiculture
      101-103...................................Child health. Child health services
      125-145...................................Physiology of children and adolescents
      206-235...................................Nutrition and feeding of children and adolescents
      240..........................................Immunization of children (General)
      242-243...................................Hospital care
      245-247...................................Nursing of children. Pediatric nursing
      250-250.3................................Premature infants
      251-325...................................Newborn infants Including physiology, care, treatment, diseases
      370-550...................................Diseases of children and adolescents
         499-507.........................................Mental disorders. Child psychiatry
  
  ## RK - Dentistry
  
      58-59.3....................................Practice of dentistry. Dental economics
      60.7-60.8.................................Preventive dentistry
      280..........................................Oral and dental anatomy and physiology
      301-493...................................Oral and dental medicine. Pathology. Diseases
      501-519...................................Operative dentistry. Restorative dentistry
      520-528...................................Orthodontics
      529-535...................................Oral surgery
      641-667...................................Prosthetic dentistry. Prosthodontics
  
  ## RL - Dermatology
  
      87-94.......................................Care and hygiene
      95............................................Pathological anatomy
      110-120...................................Therapeutics
      130-169...................................Diseases of the glands, hair, nails
      201-331...................................Hyperemias, inflammations, and infections of the skin
      391-489...................................Atrophies. Hypertrophies
      675..........................................Chronic ulcer of the skin. Bedsores
      701-751...................................Diseases due to psychosomatic and nerve disorders. Dermatoneuroses
      760-785...................................Diseases due to parasites
      790..........................................Pigmentations. Albinism
      793..........................................Congenital disorders of the skin. Nevi. Moles
  
  ## RM - Therapy. Pharmacology
  
      138.........................................Drug prescribing
      139.........................................Prescription writing
      146-146.7................................Misuse of therapeutic drugs. Medication errors
      147-180...................................Administration of drugs and other therapeutic agents
      182-190...................................Other therapeutic procedures. Including acupuncture, pneumatic aspiration, spinal puncture, pericardial puncture
      214-258...................................Diet therapy. Dietary cookbooks
      259.........................................Vitamin therapy
      260-263...................................Chemotherapy
      265-267...................................Antibiotic therapy. Antibiotics
      270-282...................................Immunotherapy. Serotherapy
      283-298...................................Endocrinotherapy. Organotherapy
      300-666...................................Drugs and their actions
      671-671.5................................Nonprescription drugs. Patent medicines
      695-893...................................Physical medicine. Physical therapy. Including massage, exercise, occupational therapy, hydrotherapy, phototherapy, radiotherapy, thermotherapy, electrotherapy
      930-931...................................Rehabilitation therapy
      950.........................................Rehabilitation technology
  
  ## RS - Pharmacy and materia medica
  
      125-131.9................................Formularies. Collected prescriptions
      139-141.9................................Pharmacopoeias
      151.2-151.9.............................Dispensatories
      153-441...................................Materia medica
         160-167.........................................Pharmacognosy. Pharmaceutical substances (Plant, animal, and inorganic)
         189-190.........................................Assay methods. Standardization. Analysis
         192-199.........................................Pharmaceutical technology
         200-201.........................................Pharmaceutical dosage forms
         250-252.........................................Commercial preparations. Patent medicines
         355-356.........................................Pharmaceutical supplies
         400-431.........................................Pharmaceutical chemistry
         441................................................Microscopical examination of drugs
  
  ## RT - Nursing
  
      89-120.....................................Specialties in nursing
  
  ## RV - Botanic, Thomsonian, and eclectic medicine
  
      1-431.................................Botanic, Thomsonian, and eclectic medicine
  
  ## RX - Homeopathy
  
      211-581...................................Diseases, treatment, etc.
      601-675...................................Materia medica and therapeutics
  
  ## RZ - Other systems of medicine
  
      201-275...................................Chiropractic
      301-397.5................................Osteopathy
      399..........................................Osteo-magnetics, neuropathy, etc., A-Z
      400-408...................................Mental healing
      409.7-999................................Miscellaneous systems and treatments. Including magnetotherapy, mesmerism, naturopathy, orgonomic medicine, phrenology, radiesthesia
  