ICD-10-CM > C00-D49 > C43-C44 > C43 > C43.2 C43.2 Malignant melanoma of ear and external auricular canal Non-Billable/Non-Specific Codes C43.20Malignant melanoma of unspecified ear and external auricular canalC43.21Malignant melanoma of right ear and external auricular canalC43.22Malignant melanoma of left ear and external auricular canal