Subclass R R5-920 Medicine (General)R5-130.5 General worksR131-687 History of medicine. Medical expeditionsR690-697 Medicine as a profession. PhysiciansR702-703 Medicine and the humanities. Medicine and disease in relation tohistory, literature, etc. R711-713.97 Directories R722-722.32 Missionary medicine. Medical missionaries R723-726 Medical philosophy. Medical ethics R726.5-726.8 Medicine and disease in relation to psychology. Terminal care. Dying R727-727.5 Medical personnel and the public. Physician and the public R728-733 Practice of medicine. Medical practice economics R735-854 Medical education. Medical schools. Research R855-855.5 Medical technology R856-857 Biomedical engineering. Electronics. Instrumentation R858-859.7 Computer applications to medicine. Medical informatics R864 Medical records R895-920 Medical physics. Medical radiology. Nuclear medicine Subclass RA RA1-1270 Public aspects of medicineRA1-418.5 Medicine and the stateRA396 Regulation of medical education. LicensureRA398 Registration of physicians, pharmacists, etc.RA399 Regulation of medical practice. Evaluation and quality controlof medical care. Medical audit RA405 Death certification RA407-409.5 Health status indicators. Medical statistics and surveys RA410-410.9 Medical economics. Economics of medical care. Employment RA411-415 Provisions for personal medical care. Medical care plans RA418-418.5 Medicine and society. Social medicine. Medical sociology RA421-790.95 Public health. Hygiene. Preventive medicine RA428-428.5 Public health laboratories, institutes, etc. RA440-440.87 Study and teaching. Research RA565-600 Environmental health Including sewage disposal, air pollution, nuisances, water supply RA601-602 Food and food supply in relation to public health RA604-618 Parks, public baths, public carriers, buildings, etc. RA619-637 Disposal of the dead. Undertaking. Burial. Cremation. Cemeteries RA638 Immunity and immunization in relation to public health RA639-642 Transmission of disease RA643-645 Disease (Communicable and noninfectious) and public health RA645.3-645.37 Home health care services RA645.5-645.9 Emergency medical services RA646-648.3 War and public health RA648.5-767 Epidemics. Epidemiology. Quarantine. Disinfection RA771-771.7 Rural health and hygiene. Rural health services RA773-788 Personal health and hygiene Including clothing, bathing, exercise, travel, nutrition, sleep, sex hygiene RA790-790.95 Mental health. Mental illness prevention RA791-954 Medical geography. Climatology. Meteorology RA960-1000.5 Medical centers. Hospitals. Dispensaries. Clinics Including ambulance service, nursing homes, hospices RA1001-1171 Forensic medicine. Medical jurisprudence. Legal medicine RA1190-1270 Toxicology. Poisons Subclass RB RB1-214 PathologyRB1-17 General worksRB24-33 Pathological anatomy and histologyRB37-56.5 Clinical pathology. Laboratory techniqueRB57 Post-mortem examination. AutopsiesRB127-150 Manifestations of diseaseRB151-214 Theories of disease. Etiology. Pathogenesis Subclass RC RC31-1245 Internal medicineRC49-52 Psychosomatic medicineRC71-78.7 Examination. DiagnosisRC81-82 RC86-88.9 RC91-103 RC109-216 RC251 RC254-282 RC306-320.5 RC321-571 Including radiography Popular medicine Medical emergencies. Critical care. Intensive care. First aid Disease due to physical and chemical agents Infectious and parasitic diseases Constitutional diseases (General) Neoplasms. Tumors. Oncology Including cancer and carcinogens Tuberculosis Neurosciences. Biological psychiatry. Neuropsychiatry RC346-429 Neurology. Diseases of the nervous system Including speech disorders RC435-571 Psychiatry RC475-489 Therapeutics. Psychotherapy RC490-499 Hypnotism and hypnosis. Suggestion therapy RC500-510 Psychoanalysis RC512-569.5 Psychopathology RC512-528 Psychoses RC530-552 Neuroses RC554-569.5 Personality disorders. Behavior problems Including sexual problems, drug abuse, suicide, child abuse RC569.7-571 Mental retardation. Developmental disabilities RC581-951 Specialties of internal medicine RC581-607 Immunologic diseases. Allergy RC620-627 Nutritional diseases. Deficiency diseases RC627.5-632 Metabolic diseases RC633-647.5 Diseases of the blood and blood-forming organs RC648-665 Diseases of the endocrine glands. Clinical endocrinology RC666-701 Diseases of the circulatory (Cardiovascular) system RC705-779 Diseases of the respiratory system RC799-869 Diseases of the digestive system. Gastroenterology RC870-923 Diseases of the genitourinary system. Urology RC924-924.5 Diseases of the connective tissues RC925-935 Diseases of the musculoskeletal system RC952-1245 Special situations and conditions RC952-954.6 Geriatrics RC955-962 Arctic medicine. Tropical medicine RC963-969 Industrial medicine. Industrial hygiene RC970-986 Military medicine. Naval medicine RC1000-1020 Submarine medicine RC1030-1160 Transportation medicine Including automotive, aviation, and space medicine RC1200-1245 Sports medicine Subclass RD RD1-811 SurgeryRD1-31.7 General worksRD32-33.9 Operative surgery. Technique of surgical operationsRD49-52 Surgical therapeutics. Preoperative and postoperative careRD57 Surgical pathologyRD58 Reparative processes after operations (Physiological)RD59 Surgical shock. Traumatic shockRD63-76 Operating rooms and theaters. Instruments, apparatus, andappliances RD78.3-87.3 Anesthesiology RD91-91.5 Asepsis and antisepsis. Sterilization (Operative) RD92-97.8 Emergency surgery. Wounds and injuries RD98-98.4 Surgical complications RD99-99.35 Surgical nursing RD101-104 Fractures (General) RD118-120.5 Plastic surgery. Reparative surgery RD120.6-129.8 Transplantation of organs, tissues, etc. RD130 Prosthesis. Artificial organs RD137-145 Surgery in childhood, adolescence, pregnancy, old age RD151-498 Military and naval surgery RD520-599.5 Surgery by region, system, or organ RD651-678 Neoplasms. Tumors. Oncology RD680-688 Diseases of the locomotor system (Surgical treatment) RD701-811 Orthopedic surgery RD792-811 Physical rehabilitation Subclass RE RE1-994 OphthalmologyRE75-79 Examination. DiagnosisRE80-87 Eye surgeryRE88 Ophthalmic nursingRE89 Eye banksRE91-912 Particular diseases of the eyeRE918-921 Color vision tests, charts, etc.RE925-939 Refraction and errors of refraction and accommodationRE939.2-981 Optometry. Opticians. EyeglassesRE986-988 Artificial eyes and other prosthesesRE991-992 Ocular therapeutics Subclass RF RF1-547 OtorhinolaryngologyRF110-320 Otology. Diseases of the earRF341-437 Rhinology. Diseases of the nose, accessory sinuses, and nasopharynxRF460-547 Laryngology. Diseases of the throat Subclass RG RG1-991 Gynecology and obstetricsRG104-104.7 Operative gynecologyRG133-137.6 Conception. Artificial insemination. ContraceptionRG138 Sterilization of womenRG159-208 Functional and systemic disorders. Endocrine gynecologyRG211-483 Abnormalities and diseases of the female genital organsRG484-485 Urogynecology and obstetric urology. Urogynecologic surgeryRG491-499 Diseases of the breastRG500-991 ObstetricsRG551-591 PregnancyRG600-650 The embryo and fetusRG648 Spontaneous abortion. MiscarriageRG651-721 Labor. ParturitionRG725-791 Obstetric operations. Operative obstetricsRG801-871 Puerperal stateRG940-991 Maternal care. Prenatal care services Subclass RJ RJ1-570 PediatricsRJ47.3-47.4 Genetic aspectsRJ50-51 Examination. DiagnosisRJ52-53 TherapeuticsRJ59-60 Infant and neonatal morbidity and mortalityRJ91 Supposed prenatal influence. Prenatal culture. StirpicultureRJ101-103 Child health. Child health servicesRJ125-145 Physiology of children and adolescentsRJ206-235 Nutrition and feeding of children and adolescentsRJ240 Immunization of children (General)RJ242-243 Hospital careRJ245-247 Nursing of children. Pediatric nursingRJ250-250.3 Premature infantsRJ251-325 Newborn infantsIncluding physiology, care, treatment, diseases RJ370-550 Diseases of children and adolescents RJ499-507 Mental disorders. Child psychiatry Subclass RK RK1-715 DentistryRK58-59.3 Practice of dentistry. Dental economicsRK60.7-60.8 Preventive dentistryRK280 Oral and dental anatomy and physiologyRK301-493 Oral and dental medicine. Pathology. DiseasesRK501-519 Operative dentistry. Restorative dentistryRK520-528 OrthodonticsRK529-535 Oral surgeryRK641-667 Prosthetic dentistry. Prosthodontics Subclass RL RL1-803 DermatologyRL87-94 Care and hygieneRL95 Pathological anatomyRL110-120 TherapeuticsRL130-169 Diseases of the glands, hair, nailsRL201-331 Hyperemias, inflammations, and infections of the skinRL391-489 Atrophies. HypertrophiesRL675 Chronic ulcer of the skin. BedsoresRL701-751 Diseases due to psychosomatic and nerve disorders.Dermatoneuroses RL760-785 Diseases due to parasites RL790 Pigmentations. Albinism RL793 Congenital disorders of the skin. Nevi. Moles Subclass RM RM1-950 Therapeutics. PharmacologyRM138 Drug prescribingRM139 Prescription writingRM146-146.7 Misuse of therapeutic drugs. Medication errorsRM147-180 Administration of drugs and other therapeutic agentsRM182-190 Other therapeutic proceduresIncluding acupuncture, pneumatic aspiration, spinal puncture, pericardial puncture RM214-258 Diet therapy. Dietary cookbooks RM259 Vitamin therapy RM260-263 Chemotherapy RM265-267 Antibiotic therapy. Antibiotics RM270-282 Immunotherapy. Serotherapy RM283-298 Endocrinotherapy. Organotherapy RM300-666 Drugs and their actions RM671-671.5 Nonprescription drugs. Patent medicines RM695-893 Physical medicine. Physical therapy Including massage, exercise, occupational therapy, hydrotherapy, phototherapy, radiotherapy, thermotherapy, electrotherapy RM930-931 Rehabilitation therapy RM950 Rehabilitation technology Subclass RS RS1-441 Pharmacy and materia medicaRS125-131.9 Formularies. Collected prescriptionsRS139-141.9 PharmacopoeiasRS151.2-151.9 DispensatoriesRS153-441 Materia medicaRS160-167 Pharmacognosy. Pharmaceutical substances (Plant, animal, andinorganic) RS189-190 Assay methods. Standardization. Analysis RS192-199 Pharmaceutical technology RS200-201 Pharmaceutical dosage forms RS250-252 Commercial preparations. Patent medicines RS355-356 Pharmaceutical supplies RS400-431 Pharmaceutical chemistry RS441 Microscopical examination of drugs Subclass RT RT1-120 Nursing RT89-120 Specialties in nursing Subclass RV RV1-431 Botanic, Thomsonian, and eclectic medicine Subclass RX RX1-681 HomeopathyRX211-581 Diseases, treatment, etc.RX601-675Materia medica and therapeutics Subclass RZ RZ201-999 Other systems of medicineRZ201-275 ChiropracticRZ301-397.5 OsteopathyRZ399 Osteo-magnetics, neuropathy, etc., A-ZRZ400-408 Mental healingRZ409.7-999 Miscellaneous systems and treatmentsIncluding magnetotherapy, mesmerism, naturopathy, organomic medicine, phrenology, radiesthesia