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

Quizplus · Accepted Answer

The correct way to calculate the size of a lesion being excised, for coding purposes, is to double the narrowest margin and then add that to the largest diameter of the lesion. This accounts for both the actual size of the lesion and the necessary margin around it for complete excision.

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