ICD-10-CM > S00-T88 > S00-S09 > S09 > S09.9 > S09.91 S09.91 Unspecified injury of ear Non-Billable/Non-Specific Applicable To Injury of ear NOS Codes S09.91XA..., initial encounterS09.91XD..., subsequent encounterS09.91XS..., sequela