ICD-10-CM chapters

Term Definition
Chapter 1 Certain Infectious and Parasitic Diseases
Chapter 2 Neoplasms
Chapter 3 Diseases of the Blood and Blood-forming organs and Certain disorders involving the immune mechanism
Chapter 4 Endocrine, Nutritional and Metabolic diseases
Chapter 5 Mental, behavioral, and neurodevelopment disorders
Chapter 6 diseases of the nervous system
Chapter 7 diseases of the eye and adnexa
Chapter 8 diseases of the ear and mastoid
Chapter 9 diseases of the circulatory system
Chapter 10 diseases of the respiratory system
Chapter 11 diseases of the digestive system
Chapter 12 diseases of the skin and subcutaneous tissue
Chapter 13 diseases of the muscloskeletal system and connective tissue
Chapter 14 diseases of the genitourinary system
Chapter 15 pregnancy, childbirth, and the puerperium
Chapter 16 certain conditions originating in the prenatal period
Chapter 17 congenital malformations, deformations, and chromosomal abnormalities
Chapter 18 symptoms, signs, and abnormal clinical and laboratory findings, not elsewhere classifed
Chapter 19 injury, poisoning, and certain other consequences of external causes
Chapter 20 external causes of morbidity
Chapter 21 factors influencing health status and contact with health services

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