Referencia
Choose the reference that matches your task. Start with an index term, verify the Tabular entry, then read the applicable coding instructions.
Tabular List
Browse all 22 chapters and follow the hierarchy from a code range to a complete diagnosis code.
Alphabetic Index
Start with a diagnosis term, read its modifiers and follow the reference to the Tabular List.
External Causes Index
Explore references for the circumstances, mechanisms and causes of injuries.
Table of Drugs & Chemicals
Find substance references for poisoning, adverse effects and underdosing.
Table of Neoplasms
Find an anatomical site and review the behavior columns before verifying the Tabular entry.
Official Coding Guidelines
Read the published conventions, general guidelines and chapter-specific instructions.
More lookup tools
Official code titles and instructions remain in English. Code checks confirm the reference entry; they do not assess clinical documentation or payer coverage.