A large basal cell carcinoma on a patient's forehead is removed using Mohs' chemosurgery. What code(s) should be reported?

In coding for the removal of a large basal cell carcinoma using Mohs' chemosurgery, the appropriate choice is based on the specific codes assigned to the procedure and the characteristics of the tumor.

When a basal cell carcinoma is removed using Mohs' micrographic surgery, the codes reflect the depth and the technique used for excision. Basal cell carcinoma excisions typically fall under the range of codes pertaining to skin lesions and Mohs surgery, specifically identifying how the cancer is treated and the complexity involved.

The selected codes of 17311 and 17315 correspond to the meticulous process used in Mohs' surgery. Code 17311 is for the first stage of Mohs micrographic surgery for skin cancer, while 17315 represents the excised tissue when multiple phases or additional stages are involved in the process for a larger tumor.

When choosing the correct codes, it is essential to consider the specifics of the Mohs procedure, including whether one or multiple stages were performed and the size of the tumor as indicated by the coding guidelines. Therefore, the answer highlights the correct reporting of the surgical intervention for a large basal cell carcinoma using Mohs' technique, which encompasses the complexity and depth of the surgery necessary to ensure efficient and comprehensive treatment.