Library of Congress Classification System
R - Medicine
| R | 5-920 | 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 Disease in Relation to Histroy, Literature, etc. | |
| 713-713.97 | 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 | |
| 727-727.8 | Physician and the Public | |
| 728-733 | Practice of Medicine, Medical Practice Economics | |
| 735-854 | Medical Education, Medical Schools, Research | |
| 856-857 | Biomedical Engineering, Electronics, Instrumentation | |
| 858-859.7 | Computer Applications to Medicine | |
| 864 | Medical Records | |
| 895-920 | Medical Physics, Medical Radiology, Nuclear Medicine | |
| RA | 1-1270 | 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 | |
| 405 | Death Certification | |
| 407-409.5 | Medical Statistics and Surveys | |
| 410-410.9 | Medical Economics, Economics of Medical Care | |
| 411-415 | Provisions for Personal Medical Care, Medical Care Plans | |
| 418-418.5 | Medicine and Society, Social Medicine, Medical Sociology | |
| 421-790.85 | Public Health, Hygiene, Preventive Medicine | |
| 428-428.5 | Public Health Laboratories, Institutes, etc. | |
| 440-440.85 | 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. | |
| 619-636.7 | Disposal of the Dead, Undertaking, Cemeteries | |
| 638 | Immunity and Immunization in Relation to Public Health | |
| 639-642 | Transmission of Disease | |
| 643-645 | Disease 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 | |
| 648.5-766 | Epidemics, Epidemology, Quarantine, Disinfection | |
| 771-771.7 | Rural Health and Hygiene (including clothing, bathing, exercise, travel, nutrition, sleep, sex hygiene) | |
| 790-790.85 | Mental Health | |
| 791-954 | Medical Geography, Medical Climatology and Meteorology | |
| 960-999 | Medical Centers, Hospitals, Dispensaries, Clinics (including ambulance service and nursing homes) | |
| 1001-1171 | Forensic Medicine, Medical Jurisprudence, Legal Medicine | |
| 1190-1270 | Toxiciology, Poisons | |
| RB | 1-214 | Pathology |
| 1-17 | General Works | |
| 24-33 | Pathology Anatomy and Histology | |
| 37-56 | Clinical Pathology, Laboratory Technique | |
| 57 | Post-Mortem Examination, Autopsies | |
| 127-150 | Manifestation of Disease | |
| 151-214 | Theories of Disease, Etiology, Pathogenesis | |
| RC | 31-1245 | Internal Medicine, Practice of 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 | Diseases Due to Physical and Chemical Agents | |
| 110-216 | Infectious and Parasitic Diseases | |
| 251 | Constitutional Diseases (General) | |
| 254-282 | Neoplasms, Tumors, Oncology (including cancer and carcinogens) | |
| 306-320.5 | Tuberculosis | |
| 321-571 | Neurology and 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 | |
| 512-571 | 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 | |
| 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 | |
| 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 | |
| 952-954.6 | Geriatrics | |
| 955-962 | Arctic and Tropical Medicine | |
| 963-969 | Industrial Medicine, Industrial Hygiene | |
| 970-1015 | Military Medicine, Naval Medicine | |
| 1030-1160 | Transportation Medicine (including automotive, aviation, and space medicine) | |
| 1200-1245 | Sports Medicine | |
| RD | 1-811 | 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 | |
| 101-103 | Fractures (General) | |
| 118-120.5 | Plastic Surgery, Repatative Surgery | |
| 120.7-129.5 | Transplantation of Organs, Tissues, etc. | |
| 130 | Prosthesis, Artificial Organs | |
| 150-498 | 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 | Orthopedics | |
| 792-811 | Physical Rehabilitation | |
| RE | 1-994 | Opthamology |
| 80-87 | Eye Surgery | |
| 88 | Ophthalmic Nursing | |
| 91-912 | Particular Diseases of the Eye | |
| 918-921 | Color Vision Tests, Charts, etc. | |
| 925-939 | Refraction and Errors of Refraction and Accommodation | |
| 940-981 | Optometry, Opticians, Eyeglasses | |
| 986-988 | Artificial Eyes and Other Prostheses | |
| 991-992 | Ocular Therapeutics | |
| RF | 1-547 | Otorhinolaryngology (Ear, Nose, Throat) |
| 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 | 1-991 | Gynecology and Obstetrics |
| 103-104.6 | Operative Gynecology | |
| 133-137.6 | Conception, Artificial Insemination, Contraception | |
| 138 | Sterilization of Women | |
| 159-208 | Functional and Systemic Disorders | |
| 211-483 | Abnormalities and Diseases of the Female Genital Organs | |
| 484-485 | Gynecological and Obstetric Urology | |
| 491-499 | Diseases of the Breast | |
| 500-991 | Obstetrics | |
| 551-591 | Pregnancy | |
| 600-649 | 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 | |
| RJ | 1-570 | 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 | Hygiene and Care of Children | |
| 125-145 | Physiology of Children and Adolescents | |
| 240 | Immunization of Children (General) | |
| 242-243 | Hospital Care | |
| 245 | Nursing of Children, Pediatric Nursing | |
| 250 | Premature Infants | |
| 251-325 | Newbord Infants (including physiology, care, treatment, diseases) | |
| 370-550 | Diseases of Children and Adolescents | |
| 499-507 | Mental Disorders, Child Psychiatry | |
| RK | 1-715 | 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 | |
| 520-528 | Orthodontics | |
| 529-535 | Oral Surgery | |
| 641-667 | Prosthetic Dentistry, Prosthodontics | |
| RL | 1-803 | 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 | Pigmentation, Albinism | |
| 793 | Congenital Disorders of the Skin, Nevi, Moles | |
| RM | 1-931 | Therapeutics, Pharmacology |
| 138 | Drug Prescribing | |
| 139 | Prescription Writing | |
| 146-146.7 | Misues 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, Diet and Dietetics in Disease, Dietary Cookbooks | |
| 259 | Vitamin Therapy | |
| 260-263 | Chemotherapy | |
| 265-267 | Antibiotic Therapy, Antibiotics | |
| 270-282 | Serum Therapy, Immunotherapy | |
| 283-298 | Endocrinotherapy, Organotherapy | |
| 300-666 | Drugs and their Actions | |
| 671-671.5 | Commercial Preparations, Patent Medicines | |
| 695-890 | Physical Medicine, Physical Therapy (including massage, exercise, occupational therapy, hydrotherapy, phototherapy, radiotherapy, thermotherapy, electrotherapy) | |
| 845-862 | Medical Radiology | |
| 930-931 | Rehabilitation Therapy | |
| RS | 1-441 | 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 | |
| 192-199 | Pharmaceutical Processes | |
| 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 | 1-120 | Nursing |
| 89-120 | Specialties in Nursing | |
| RV | 1-431 | Botanic, Thomsonian, and Eclectic Medicine |
| RX | 1-681 | Homeopathy |
| 211-581 | Diseases, Treatment, etc. | |
| 601-675 | Materia Medica and Therapeutics | |
| RZ | 201-999 | 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, organomic medicine, phrenology, radiesthesia, etc.) |
To the Library of Congress Classification index
