ICD-10-CM > H00-H59 > H46-H47 > H47 > H47.2 > H47.21 H47.21 Primary optic atrophy Non-Billable/Non-Specific Codes H47.211Primary optic atrophy, right eyeH47.212Primary optic atrophy, left eyeH47.213Primary optic atrophy, bilateralH47.219Primary optic atrophy, unspecified eye