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Effective October 1, 2026

2027 ICD-10-CM diagnosis codes

The International Classification of Diseases, 10th Revision, Clinical Modification is used to report diagnoses on U.S. healthcare claims. Choose a chapter to browse, or search above.
  1. 1Certain infectious and parasitic diseasesA00-B99
  2. 2NeoplasmsC00-D49
  3. 3Diseases of the blood and blood-forming organs and certain disorders involving the immune mechanismD50-D89
  4. 4Endocrine, nutritional and metabolic diseasesE00-E89
  5. 5Mental, Behavioral and Neurodevelopmental disordersF01-F99
  6. 6Diseases of the nervous systemG00-G99
  7. 7Diseases of the eye and adnexaH00-H59
  8. 8Diseases of the ear and mastoid processH60-H95
  9. 9Diseases of the circulatory systemI00-I99
  10. 10Diseases of the respiratory systemJ00-J99
  11. 11Diseases of the digestive systemK00-K95
  12. 12Diseases of the skin and subcutaneous tissueL00-L99
  13. 13Diseases of the musculoskeletal system and connective tissueM00-M99
  14. 14Diseases of the genitourinary systemN00-N99
  15. 15Pregnancy, childbirth and the puerperiumO00-O9A
  16. 16Certain conditions originating in the perinatal periodP00-P96
  17. 17Congenital malformations, deformations, chromosomal abnormalities, and genetic disordersQ00-QA1
  18. 18Symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R99
  19. 19Injury, poisoning and certain other consequences of external causesS00-T88
  20. 20External causes of morbidityV00-Y99
  21. 21Factors influencing health status and contact with health servicesZ00-Z99
  22. 22Codes for special purposesU00-U85