ICD-10-CM > S00-T88 > S00-S09 > S04 > S04.0 > S04.01 S04.01 Injury of optic nerve Non-Billable/Non-Specific Applicable To Injury of 2nd cranial nerve Codes S04.011Injury of optic nerve, right eyeS04.011A..., initial encounterS04.011D..., subsequent encounterS04.011S..., sequelaS04.012Injury of optic nerve, left eyeS04.012A..., initial encounterS04.012D..., subsequent encounterS04.012S..., sequelaS04.019Injury of optic nerve, unspecified eyeS04.019A..., initial encounterS04.019D..., subsequent encounterS04.019S..., sequela