ICD-10-CM > S00-T88 > S00-S09 > S09 > S09.3 > S09.31 S09.31 Primary blast injury of ear Non-Billable/Non-Specific Applicable To Blast injury of ear NOS Codes S09.311Primary blast injury of right earS09.311A..., initial encounterS09.311D..., subsequent encounterS09.311S..., sequelaS09.312Primary blast injury of left earS09.312A..., initial encounterS09.312D..., subsequent encounterS09.312S..., sequelaS09.313Primary blast injury of ear, bilateralS09.313A..., initial encounterS09.313D..., subsequent encounterS09.313S..., sequelaS09.319Primary blast injury of unspecified earS09.319A..., initial encounterS09.319D..., subsequent encounterS09.319S..., sequela