ICD-10 Code H53.422 – Scotoma of blind spot area, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H53.422 – Scotoma of blind spot area, left eye
What it is
This code identifies a localized visual field defect in the left eye at the blind spot area. It means the patient has a scotoma, or missing area of vision, documented specifically in that eye.
Clinical signs
Patients may report a blind spot, missing patch of vision, or trouble noticing objects in part of the visual field. Clinical features vary; refer to documentation and eye examination findings.
When to use this code
Use H53.422 when the provider documents a scotoma affecting the blind spot area of the left eye. It is appropriate when the laterality is clear and the record supports a visual field defect rather than a general vision complaint. Check documentation if the note only says “scotoma” without eye specified.
Do not use for
Do not use this code for unspecified scotoma, other eye involvement, or nonlocalized blurred vision. If the chart does not confirm the left eye blind spot area, check documentation.
Coding tip
Verify laterality and the exact visual field location before assigning H53.422.