Biopsy vs. Shave â¢Biopsy âA biopsy is done to evaluate a suspicious lesion in which your physician may not want to completely excise. There are several methods that can be used for a biopsy. â¢Shave âA shave is defined by CPTÂ® as the sharp removal by transverse incision or horizontal slicing to remove epidermal and dermal lesions without a full-thickness