I was told that as of June 1st, according to CMS, skin lesions are to be reported as neoplasms of uncertain morphology, if coded prior to identification of the specimen.
"If a benign skin lesion excision was performed, report the applicable CPT code, even if final path demonstrates a malignant or carcinoma in situ dx for the lesion removed. The final path does not change the CPT code of the procedure performed. An ambiguous but low suspicion lesion would be reported as a benign lesion (11400-11446) reflecting the procedure that was performed. A moderate-to-high suspicion lesion may be reported as a malignancy (11600-11646), if the appropriate excision was performed. To report removal of lesions of uncertain morhphology, prior to ID of the specimen, report ICD-9 239.2 (neoplasms of unspecified nature, bone, soft tissue and skin), or 709.9 (unspecified disorder of skin and suncutaneous tissue) since proper coding requires the highest level of dx known at the time the procedure was done ICD-9 709.9 will be added to the list of payable dx's in tthe LCD."
I know that this is not a medicare patient that you are dealing with but I just thought it might be good information to have regarding lesion coding guidelines.