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ICD-10-CM Classification System

ICD-10 Code Directory

Comprehensive ICD-10-CM code classification system organized by chapters and categories. Find the right codes for accurate medical billing and documentation.

Quick Chapter Access

About ICD-10-CM

The International Classification of Diseases, 10th Revision, Clinical Modification (ICD-10-CM) serves as the standard diagnostic tool used by healthcare professionals worldwide to classify and code diagnoses, symptoms, and medical procedures with precision and consistency.

ICD-10-CM is systematically structured into 22 distinct chapters, with each chapter dedicated to specific body systems or categories of medical conditions. Every chapter is identified by a unique code range (such as A00-B99 for infectious and parasitic diseases). The coding system utilizes 3-7 character codes, where the first character is always a letter (A-Z) followed by numbers or additional letters.

This comprehensive code browser enables healthcare professionals to navigate the complete ICD-10-CM classification system, access detailed information about individual codes, and understand the hierarchical relationships between different diagnostic categories. Users can efficiently browse by chapter, explore specific categories, or search for particular codes to ensure accurate medical documentation and billing compliance.

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