Basal cell carcinoma skin/ right lower eyelid, inc canthus

This code identifies a malignant neoplasm originating from the basal cells of the epidermis, specifically located on the right lower eyelid, encompassing the canthus. This is a common type of skin cancer, typically slow-growing and locally invasive.

Use this code for documented cases of basal cell carcinoma affecting the specified anatomical site. This code is appropriate when pathology reports confirm the diagnosis and the physician's notes clearly indicate the lesion's location on the right lower eyelid, including the canthus.

• Ensure documentation specifies "basal cell carcinoma" and not another type of skin cancer (e.g., squamous cell carcinoma).
• Verify the exact laterality and eyelid involvement (upper vs. lower, right vs. left) to select the most precise code.
• Confirm the lesion's extension to the canthus is explicitly stated or implied in the clinical notes.