ICD-10-CM > C00-D49 > C43-C44 > C44 > C44.2 > C44.20 C44.20 Unspecified malignant neoplasm of skin of ear and external auricular canal Non-Billable/Non-Specific Codes C44.201Unspecified malignant neoplasm of skin of unspecified ear and external auricular canalC44.202Unspecified malignant neoplasm of skin of right ear and external auricular canalC44.209Unspecified malignant neoplasm of skin of left ear and external auricular canal