ICD-10-CM > C00-D49 > D10-D36 > D23 > D23.2 D23.2 Other benign neoplasm of skin of ear and external auricular canal Non-Billable/Non-Specific Codes D23.20Other benign neoplasm of skin of unspecified ear and external auricular canalD23.21Other benign neoplasm of skin of right ear and external auricular canalD23.22Other benign neoplasm of skin of left ear and external auricular canal