ICD-10-CM Chapters
Browse all 22 chapters of the ICD-10-CM classification system.
1 Certain infectious and parasitic diseases 1,309 codes 2 Neoplasms 2,181 codes 3 Diseases of the blood and blood-forming organs 403 codes 4 Endocrine, nutritional and metabolic diseases 1,270 codes 5 Mental, behavioral and neurodevelopmental disorders 1,113 codes 6 Diseases of the nervous system 932 codes 7 Diseases of the eye and adnexa 3,466 codes 8 Diseases of the ear and mastoid process 871 codes 9 Diseases of the circulatory system 1,807 codes 10 Diseases of the respiratory system 478 codes 11 Diseases of the digestive system 1,117 codes 12 Diseases of the skin and subcutaneous tissue 1,207 codes 13 Diseases of the musculoskeletal system and connective tissue 8,707 codes 14 Diseases of the genitourinary system 1,047 codes 15 Pregnancy, childbirth and the puerperium 3,079 codes 16 Certain conditions originating in the perinatal period 565 codes 17 Congenital malformations, deformations and chromosomal abnormalities 1,067 codes 18 Symptoms, signs and abnormal clinical and laboratory findings 963 codes 19 Injury, poisoning and certain other consequences of external causes 54,325 codes 20 External causes of morbidity 10,602 codes 21 Factors influencing health status and contact with health services 1,861 codes 22 Codes for special purposes 33 codes