CPT® Code 19302

Partial mastectomy, also known as lumpectomy, tylectomy, quadrantectomy, or segmentectomy, is a surgical procedure aimed at removing a cancerous lesion or a lesion suspected of being cancerous from the breast. This procedure involves making an incision over the identified lump or mass, which is then carefully inspected visually by the surgeon. The primary goal is to excise the lump or mass along with a margin of healthy tissue surrounding it to ensure that any potentially cancerous cells are also removed. The excised tissue is subsequently sent to a laboratory for histological analysis to confirm the presence or absence of cancer. During the procedure, the surgical site and the surrounding breast tissue are thoroughly examined for any additional lesions that may require attention. In cases where axillary lymphadenectomy is indicated, an additional incision is made in the lowest area of the axilla (armpit). The surgeon identifies the borders of the pectoralis major and latissimus dorsi muscles, as well as the axillary vein, which is carefully dissected from the surrounding tissue. The neural structures in the axilla are also identified and protected during this process. The procedure typically involves the excision of 15 to 25 axillary lymph nodes located beneath the axillary vein and along the nerves and muscles of the axilla. Once all cancerous or suspicious tissue has been successfully removed, a drain is placed to prevent fluid accumulation, and the surgical wound is closed. It is important to note that CPT® Code 19301 should be used when a partial mastectomy is performed without axillary lymphadenectomy, while CPT® Code 19302 is designated for cases where the procedure includes axillary lymphadenectomy.