ICD-10-CM > S00-T88 > S00-S09 > S09 > S09.3 > S09.30 > S09.309 S09.309 Unspecified injury of unspecified middle and inner ear Non-Billable/Non-Specific Codes S09.309A..., initial encounterS09.309D..., subsequent encounterS09.309S..., sequela