ICD-10 Code H53.433 – Sector or arcuate defects, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H53.433 – Sector or arcuate defects, bilateral
What it is
H53.433 identifies a bilateral sector or arcuate visual field defect. It means the patient has matching curved or wedge-shaped areas of missing vision in both eyes, usually documented on visual field testing.
Clinical signs
Typical findings include reduced peripheral or arcuate visual field sensitivity on perimetry in both eyes. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record specifically documents bilateral sector or arcuate field loss, especially after formal visual field testing. It is appropriate when the defect is described as present in both eyes and not just suspected. If the note only says “visual field defect,” check documentation for laterality and pattern.
Do not use for
Do not use this code for unilateral sector or arcuate defects, or for nonspecific decreased vision without a documented field pattern. If the chart does not confirm bilateral involvement, check documentation.
Coding tip
Match the code to the exact visual field pattern and laterality stated in the ophthalmology report.