1. The portion of a service described before the semicolon (;) of a CPT comprehensive code, together with the portion of a service described by the indented (component) code. 2. Under the Correct Coding Initiative (CCI), a CCI file known as component edits lists pairs of codes considered an integral part of the main surgical service provided or a component of a more comprehensive procedure. When billing a Medicare case, a component code that follows a comprehensive code cannot be charged to Medicare if the comprehensive code is billed.