Oth malig neoplasm skin/ right ear and external auric canal

This code signifies a malignant tumor originating from the skin of the right ear, specifically involving the external ear structure and/or the external auditory canal. This diagnosis excludes basal cell carcinoma, squamous cell carcinoma, and melanoma, indicating other less common types of skin cancer.

Apply this code when documentation confirms a primary malignant neoplasm of the skin of the right ear or external auricular canal, and the pathology report specifies a type other than basal cell, squamous cell, or melanoma. This is appropriate for diagnoses such as Merkel cell carcinoma, sebaceous carcinoma, or other rare adnexal tumors of the skin in this location.

• Ensure the pathology report explicitly states "other specified" malignant neoplasm and specifies the right ear/external auricular canal.
• Do not use for basal cell carcinoma (C44.212), squamous cell carcinoma (C44.222), or melanoma (C43.2) of the right ear.
• Confirm laterality (right ear) is clearly documented; if unspecified, a different code would be required.