ICD-10-CM > S00-T88 > S00-S09 > S04 > S04.0 > S04.01 > S04.019 S04.019 Injury of optic nerve, unspecified eye Non-Billable/Non-Specific Applicable To Injury of optic nerve NOS Codes S04.019A..., initial encounterS04.019D..., subsequent encounterS04.019S..., sequela