Which procedure is included under the integumentary system in CPT?

The procedure that falls under the integumentary system in the CPT (Current Procedural Terminology) coding system is a mastectomy. The integumentary system includes the skin and its related structures, and procedures involving the removal of breast tissue, such as mastectomy, directly relate to this system.

In contrast, an appendectomy refers to the surgical removal of the appendix and is part of the digestive system; arthroscopy involves surgery on the joints and falls under the musculoskeletal system; nephrectomy pertains to the removal of a kidney, which is related to the urinary system. Each of these procedures is categorized within specific systems based on the anatomical structures they involve, which helps ensure accurate billing and documentation in medical coding.