ICD-10-CM > H00-H59 > H53-H54 > H53 > H53.4 > H53.42 H53.42 Scotoma of blind spot area Non-Billable/Non-Specific Applicable To Enlarged blind spot Codes H53.421Scotoma of blind spot area, right eyeH53.422Scotoma of blind spot area, left eyeH53.423Scotoma of blind spot area, bilateralH53.429Scotoma of blind spot area, unspecified eye