When selecting a code from the "Excision of Benign and Malignant Lesions" (11400-11646) subsection, a coder must calculate the size of a lesion being excised. This size is calculated by:

Question

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The correct calculation for the size of a lesion being excised, as per the guidelines for coding in the "Excision of Benign and Malignant Lesions" subsection, involves adding the narrowest margin taken around the lesion to the lesion's largest diameter, and then multiplying that sum by 2. This formula accounts for both the actual size of the lesion and the margin of healthy tissue that is also removed during the excision.

When Selecting a Code from the "Excision of Benign and Malignant