ICD-10-CM > C00-D49 > C43-C44 > C44 > C44.2 > C44.29 C44.29 Other specified malignant neoplasm of skin of ear and external auricular canal Non-Billable/Non-Specific Codes C44.291Other specified malignant neoplasm of skin of unspecified ear and external auricular canalC44.292Other specified malignant neoplasm of skin of right ear and external auricular canalC44.299Other specified malignant neoplasm of skin of left ear and external auricular canal