CPT® Code 19112

The CPT® Code 19112 refers to the excision of a lactiferous duct fistula, a procedure that addresses complications arising from the lactiferous ducts in the breast. A lactiferous duct fistula is an abnormal connection that forms between the duct and the skin, often resulting from obstruction, infection, or previous surgical interventions such as incision and drainage of a breast abscess or excision of a breast lesion. The procedure typically begins with nipple exploration to diagnose the underlying cause of symptoms, such as bloody discharge from the nipple. This discharge is frequently associated with benign lesions, such as papillomas, which may not be palpable during a physical examination. The physician performs a thorough examination of the nipple and surrounding tissues, often utilizing techniques such as ductoscopy to visualize the ductal system. If a fistula is identified, the surgeon will make an incision over the fistulous tract to excise it, along with the obstructed duct and any surrounding inflamed tissue, which may include portions of the skin of the areola and nipple. This excision aims to alleviate symptoms and prevent further complications associated with the ductal obstruction and infection.