About ICD-10-CM
ICD-10-CM (International Classification of Diseases, 10th Revision, Clinical Modification) is the official system used in the United States for diagnostic coding on healthcare claims, medical records, and public health reporting.
ICD10Source uses the official CMS Section 111 Valid ICD-10 FY2026 dataset, effective October 1, 2025, containing 102,885 diagnosis codes.
Effective Date
Oct 1, 2025
Data: CMS Section 111 Valid ICD-10 FY2026 (Public Domain). CC/MCC from CMS FY2026 IPPS Final Rule. HCC from CMS-HCC Model V28. GEM Crosswalk from CMS. All data public domain.
