ICD-10-CM > H00-H59 > H46-H47 > H47 > H47.6 > H47.61 H47.61 Cortical blindness Non-Billable/Non-Specific Codes H47.611Cortical blindness, right side of brainH47.612Cortical blindness, left side of brainH47.619Cortical blindness, unspecified side of brain