1. Fourth digit of a diagnostic code in ICD-9-CM that further defines a three-digit category such as site, cause, or other characteristics. 2. Division under a category in the Current Procedural Terminology (CPT) code book.
The Rantings of the barely human.
1. Fourth digit of a diagnostic code in ICD-9-CM that further defines a three-digit category such as site, cause, or other characteristics. 2. Division under a category in the Current Procedural Terminology (CPT) code book.