Would the excision of a single lesion for a diagnosis of VIN III be excision of a malignant lesion?
A
No. A diagnosis of VIN III means that the patient has an intraepithelial neoplasia, and the diagnostic code would be 233.3, carcinoma in situ of the vulva. However, VIN III leads to invasive cancer in only about 4% of women, so this condition is considered preinvasive, not cancerous.
