FREE 2026 ICD-10-CM · 102,885 CMS CODES
ICD10Source provides access to the official CMS FY2026 ICD-10-CM diagnosis code dataset for informational and educational purposes. The information presented on this site does not constitute medical advice, legal advice, billing advice, or professional coding guidance of any kind.
The content on this site is not intended to replace, and should not be used as a substitute for, the judgment of qualified healthcare professionals, certified medical coders (CPC, CCS, RHIA, RHIT), or healthcare billing specialists.
ICD-10-CM codes are diagnostic classification tools used for administrative and billing purposes. They are not intended as clinical diagnoses. Nothing on this site should be interpreted as:
While we make every effort to present accurate and current information, ICD-10-CM codes, CC/MCC designations, HCC categories, RAF scores, POA indicators, and coding rules are updated regularly by the Centers for Medicare & Medicaid Services (CMS) and other governing bodies. Users are responsible for:
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HCC (Hierarchical Condition Category) mappings and RAF (Risk Adjustment Factor) scores displayed on this site are based on the CMS-HCC Model V28 and are provided for general reference only. Risk adjustment calculations involve complex rules, encounter data, and patient demographics that are beyond the scope of this tool. All risk adjustment coding should be reviewed by a qualified RAF coder or risk adjustment specialist.
The ICD-9 to ICD-10 crosswalk mappings are based on CMS General Equivalence Mappings (GEMs) and are provided for general reference. GEM mappings are approximate and may not reflect the most clinically appropriate code for a given situation. Many ICD-9 codes have multiple valid ICD-10 equivalents depending on clinical documentation. Always consult official coding guidelines and clinical documentation when converting codes.
The ICD-10-CM dataset used on this site is sourced from CMS Section 111 Valid ICD-10 FY2026, effective October 1, 2025. This data is published by the U.S. government and is in the public domain. While we update our dataset to reflect official annual code changes, we cannot guarantee that every code, description, or associated flag reflects the most current version at all times. Always reference the official CMS website for the most current code files.
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