ICD-10 Code H53.40 – Unspecified Visual Field Defects (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H53.40 – Unspecified visual field defects
What it is
H53.40 identifies a documented visual field defect when the exact type is not specified. Use it when the record confirms abnormal field loss, but does not name a pattern or cause.
Clinical signs
Clinical features vary; refer to documentation. Common findings may include peripheral or central field loss on exam, confrontation testing, or formal perimetry, but the specific defect is not described.
When to use this code
Use this code when the provider documents a visual field defect and does not identify whether it is hemianopic, quadrantic, or another defined pattern. It also fits when the field loss is noted, but further detail is unavailable in the chart.
Code it only from clear documentation of the defect itself. If the record names a more specific visual field abnormality or an underlying cause, you should select that more precise diagnosis instead.
Do not use for
Do not use H53.40 for blurred vision, visual disturbance without field loss, or a confirmed specific field defect with its own code. Check documentation.
Coding tip
When the note says “visual field defect” without further detail, H53.40 is the appropriate unspecified choice.