CPT® Code 15758

The procedure described by CPT® Code 15758 involves the surgical technique known as a free fascial flap with microvascular anastomosis. This complex procedure is performed under general anesthesia and is primarily utilized to repair defects in various anatomical areas where tissue loss has occurred. The term 'fascial flap' refers to a section of tissue that includes fascia, which is a connective tissue that surrounds muscles, nerves, and blood vessels. The 'free' aspect indicates that the flap is detached from its original blood supply and is then relocated to a different site, where it is reconnected through microvascular anastomosis. This connection is crucial as it restores blood flow and nerve supply to the transplanted tissue, ensuring its viability and functionality. The procedure begins with the careful preparation of the donor site, where the fascial flap is harvested. Following this, the flap is meticulously sutured into the defect area. The use of microscopy during the anastomosis allows for precise connection of the blood vessels and nerves, which may involve the injection of fluorescent dye to confirm successful vessel joining. Post-operative care includes suturing the wound closed, applying a dressing, and potentially using splints to minimize skin flap shrinkage. The donor site is also closed and dressed to promote healing.