ICD-10-CM > S00-T88 > S00-S09 > S04 > S04.3 S04.3 Injury of trigeminal nerve Non-Billable/Non-Specific Applicable To Injury of 5th cranial nerve Codes S04.30Injury of trigeminal nerve, unspecified sideS04.30XA..., initial encounterS04.30XD..., subsequent encounterS04.30XS..., sequelaS04.31Injury of trigeminal nerve, right sideS04.31XA..., initial encounterS04.31XD..., subsequent encounterS04.31XS..., sequelaS04.32Injury of trigeminal nerve, left sideS04.32XA..., initial encounterS04.32XD..., subsequent encounterS04.32XS..., sequela