Lookup 70,000+ diagnosis codes. Search by code, description, or browse by chapter and section. Includes coding guidelines, billable status, and clinical notes.
The International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) is the official system used by healthcare providers in the United States to classify and code all diagnoses, symptoms, and procedures. Developed by the CDC and maintained by CMS, it contains over 70,000 diagnosis codes organized into 22 chapters covering every disease, injury, and health condition.
Medical coders, physicians, nurses, and billing specialists use ICD-10-CM daily to ensure accurate documentation, proper reimbursement, and reliable health statistics. Our free reference tool provides instant access to all codes with complete descriptions, coding guidelines, billable status, and clinical notes.
Enter a code number (e.g., A00.1) or a medical term (e.g., cholera) in the search box above. Results appear instantly with full descriptions and coding details.
ICD-10-CM codes are organized into 22 chapters by body system and disease category. Click any chapter below to explore sections and codes within that category.
Each code page includes the full description, billable status, coding guidelines (includes/excludes), parent/child hierarchy, related codes, and frequently asked questions.
The International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) is the official system used by healthcare providers to classify and code diagnoses, symptoms, and procedures for medical billing and statistical tracking in the United States.
There are over 70,000 ICD-10-CM diagnosis codes organized into 22 chapters covering all diseases, injuries, and health conditions. The codes are updated annually by CMS and the CDC.
Billable codes are specific enough to be used for reimbursement on insurance claims. Non-billable codes are header or parent codes that require a more specific sub-code for actual billing. Always use the most specific code available.
You can search by entering the code number (e.g., A00.1), a keyword from the description (e.g., cholera), or browse by chapter and section. Our search covers all 70,000+ codes with instant results.