ICD-10-CM > S00-T88 > S00-S09 > S04 > S04.5 S04.5 Injury of facial nerve Non-Billable/Non-Specific Applicable To Injury of 7th cranial nerve Codes S04.50Injury of facial nerve, unspecified sideS04.50XA..., initial encounterS04.50XD..., subsequent encounterS04.50XS..., sequelaS04.51Injury of facial nerve, right sideS04.51XA..., initial encounterS04.51XD..., subsequent encounterS04.51XS..., sequelaS04.52Injury of facial nerve, left sideS04.52XA..., initial encounterS04.52XD..., subsequent encounterS04.52XS..., sequela