ICD-9-CM Volume 3
ICD-9-CM Volume 3 is a system of procedural codes. It is a subset of the International Statistical Classification of Diseases and Related Health Problems (ICD) 9-CM. Volumes 1 and 2 are used for diagnostic codes.
...
Wikipedia
ICD-9-CM Volume 3 is a system of procedural codes. It is a subset of the International Statistical Classification of Diseases and Related Health Problems (ICD) 9-CM. Volumes 1 and 2 are used for diagnostic codes.