# 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