Basal cell carcinoma skin/ left upper eyelid, inc canthus

This code signifies a malignant neoplasm originating from the basal cells of the epidermis, specifically located on the left upper eyelid, encompassing the canthal region. This is a common, slow-growing type of skin cancer that rarely metastasizes but can be locally destructive if left untreated.

Apply this code when documentation confirms a diagnosis of basal cell carcinoma affecting the skin of the patient's left upper eyelid, including any involvement of the inner or outer canthus. Supporting documentation should include pathology reports confirming basal cell carcinoma and clear anatomical specificity from the physician's notes.

• Ensure the laterality (left) and specific eyelid (upper) are clearly documented.
• Verify the histological type is basal cell carcinoma, not another skin cancer type.
• Confirm the lesion's location includes the canthus if specified in the diagnosis.