Final answer:
The reported codes for the described scenario of a patient having a large basal cell carcinoma on the forehead, removed via Mohs' chemosurgery, are 17311 for the first stage of surgery, and 17315 for each additional stage.
Step-by-step explanation:
In the case of a patient having a large basal cell carcinoma on the forehead, removed via Mohs' chemosurgery, the relevant codes you're looking for are 17311 and 17315.
The 17311 code indicates the first stage of Mohs' chemosurgery, which includes the removal of all visible tumor and the preparation of six specimens using mapping, color coding, and microscopic examination.
The code 17315 is used for each additional stage after the first stage, again including all the above processes. Since the question describes only the first stage of treatment, only the 17311 code is necessary. However, if further stages were conducted, each would be reported with the 17315 code.
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