Final answer:
Volume 2 of the ICD-9-CM contains the Index to Diseases, which is organized alphabetically by disease name and provides codes for diagnoses.
Step-by-step explanation:
The Index to Diseases in the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) can be found in Volume 2 of the ICD-9-CM. Volume 2 contains the Alphabetic Index to Diseases, which is organized alphabetically by disease name and provides codes that correspond to specific diagnoses.