CPT® Code 11642

A malignant lesion refers to an abnormal growth of cells that can invade surrounding tissues and potentially spread to other parts of the body. In the context of CPT® Code 11642, this procedure specifically involves the excision of such lesions located on the face, ears, eyelids, nose, lips, or mucous membranes. The excision is performed with the inclusion of a margin of healthy tissue surrounding the lesion to ensure complete removal and minimize the risk of recurrence. Common types of malignant lesions that may be excised include basal cell carcinoma, squamous cell carcinoma, verrucous carcinoma, and melanoma, all of which are types of skin cancer that can arise in these areas. Prior to the excision, the surgical site is thoroughly cleansed, and a local anesthetic is administered to ensure patient comfort during the procedure. The surgeon identifies a margin of healthy tissue around the lesion, which is critical for ensuring that all cancerous cells are removed. A full-thickness incision is then made through the dermis, encircling the lesion to excise it completely. In some cases, a frozen section may be performed during the excision to evaluate the margins for any remaining malignant cells. If cancerous tissue is detected at the margins, additional tissue is excised until clear margins are confirmed. The excised lesion is subsequently sent to a laboratory for histologic evaluation, which is essential for determining the type and extent of the malignancy. To control any bleeding that may occur during the procedure, electrocautery or chemical cautery techniques are employed. Finally, the surgical wound may be closed using a simple single-layer suture technique, although more complex closure methods such as intermediate (layer) closure, complex repair, skin grafts, or pedicle flaps may also be utilized depending on the size and location of the excision.