CPT® Code 19020

The CPT® Code 19020 refers to a surgical procedure known as a mastotomy, which involves the exploration or drainage of a deep abscess in the breast tissue. This procedure is typically indicated when there is a suspicion of an abscess, which is a localized collection of pus that can occur due to infection or other underlying conditions. During the mastotomy, the physician makes a radial incision in the skin that extends outward from the site of the abscess or the area that requires exploration. This incision allows for deeper access to the affected tissue. Once the incision is made, the physician evaluates the area of concern to determine the presence of an abscess. If an abscess is identified, the physician enters the abscess cavity, breaks up any loculations—small pockets of pus—through careful dissection, and proceeds to drain the abscess. Additionally, cultures may be taken from the abscess for laboratory analysis, which is reported separately. After the drainage is complete, the abscess site is irrigated with saline solution, packed with gauze, and left open to facilitate proper drainage and healing.