What are the three volumes of the icd-9-cm?

The ICD-9-CM (International Classification of Diseases, Ninth Revision, Clinical Modification) consists of three volumes. Volume 1 is the Tabular List, which contains the codes and their corresponding descriptions for diseases and injuries. Volume 2 is the Alphabetic Index, providing an alphabetical list of diseases, conditions, and related terms with their associated codes. Volume 3 focuses on procedures and services, detailing codes for surgical, diagnostic, and therapeutic interventions.