ICD-10-CM > S00-T88 > S00-S09 > S00 > S00.4 > S00.40 > S00.409 S00.409 Unspecified superficial injury of unspecified ear Non-Billable/Non-Specific Codes S00.409A..., initial encounterS00.409D..., subsequent encounterS00.409S..., sequela