This code is used to report the destruction of intraepithelial neoplasia (eg, basal cell carcinoma in situ) of the nose using laser surgery. Laser surgery is a type of surgery that uses a laser to remove or destroy tissue. Intraepithelial neoplasia is a type of cancer that starts in the top layer of cells in a tissue. Basal cell carcinoma in situ is a type of skin cancer that starts in the basal cells of the epidermis, which is the top layer of skin.