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ICD-10-CM code lookup. Every diagnosis explained.
The complete index of US diagnosis codes, plain-English. Search a code or browse by chapter. 98,186 codes indexed.
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Chapter 1 · A00–B99
Certain infectious and parasitic diseases
Chapter 2 · C00–D49
Neoplasms
Chapter 3 · D50–D89
Diseases of the blood and immune mechanism
Chapter 4 · E00–E89
Endocrine, nutritional and metabolic diseases
Chapter 5 · F01–F99
Mental, behavioral and neurodevelopmental disorders
Chapter 6 · G00–G99
Diseases of the nervous system
Chapter 7 · H00–H59
Diseases of the eye and adnexa
Chapter 8 · H60–H95
Diseases of the ear and mastoid process
Chapter 9 · I00–I99
Diseases of the circulatory system
Chapter 10 · J00–J99
Diseases of the respiratory system
Chapter 11 · K00–K95
Diseases of the digestive system
Chapter 12 · L00–L99
Diseases of the skin and subcutaneous tissue
Chapter 13 · M00–M99
Diseases of the musculoskeletal system and connective tissue
Chapter 14 · N00–N99
Diseases of the genitourinary system
Chapter 15 · O00–O9A
Pregnancy, childbirth and the puerperium
Chapter 16 · P00–P96
Certain conditions originating in the perinatal period
Chapter 17 · Q00–Q99
Congenital malformations, deformations and chromosomal abnormalities
Chapter 18 · R00–R99
Symptoms, signs and abnormal clinical and laboratory findings
Chapter 19 · S00–T88
Injury, poisoning and certain other consequences of external causes
Chapter 20 · V00–Y99
External causes of morbidity
Chapter 21 · Z00–Z99
Factors influencing health status and contact with health services
Chapter 22 · U00–U85
Codes for special purposes
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