Free lookup for all 98,186 ICD-10-CM diagnosis codes. Search by code number or condition name. Every code explained in plain English — no medical degree required. FY 2026 current, updated annually from official CMS and CDC publications.
ICD-10-CM (International Classification of Diseases, 10th Revision, Clinical Modification) is the official system US healthcare providers use to classify and code diagnoses on medical claims and insurance records. Every time a doctor bills your insurance, they attach an ICD-10 code to describe your diagnosis.
If you have received an Explanation of Benefits (EOB) from your insurance company and wondered what codes like I10 or E11.9 mean — this site translates them into plain English. Our database contains all 98,186 FY 2026 codes sourced directly from CMS.gov and the CDC.