ICD-10 Code H53.42 – Scotoma of blind spot area (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H53.42 – Scotoma of blind spot area
What it is
H53.42 identifies a scotoma located in the blind spot area. Use it when documentation describes a localized visual field defect in that specific region.
Clinical signs
Patients may report a missing or blurred area in vision near the blind spot. Clinical features vary; refer to documentation and visual field testing when available.
When to use this code
Use H53.42 when the provider documents a scotoma of the blind spot area, including confirmed field loss on exam or perimetry. It may also apply when the note clearly identifies the blind spot region as the site of the defect. If the location is not specified, check documentation.
Do not use for
Do not use this code for generalized vision loss, unspecified scotoma, or other visual field defects outside the blind spot area. If the record only says “visual disturbance,” code more specifically only when supported.
Coding tip
Code the exact visual field location documented; if the blind spot area is not explicitly stated, verify the note before assigning H53.42.