ICD-10 Code H52.32 – Aniseikonia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H52.32 – Aniseikonia
What it is
Aniseikonia is a visual disorder where the two eyes perceive images as different sizes or shapes. This mismatch can make binocular vision uncomfortable or difficult.
Clinical signs
Patients may report eyestrain, headaches, diplopia, or trouble reading and judging distance. Clinical features vary; refer to documentation.
When to use this code
Use H52.32 when the record documents aniseikonia as the diagnosed condition. It may appear after refractive correction, ocular surgery, or other causes of unequal image size, but you should code only when specifically documented.
Do not use for
Do not use this code for general blurred vision, refractive error, or diplopia without documented aniseikonia. Check documentation if the chart only mentions anisometropia or another eye disorder.
Coding tip
Verify that the provider names aniseikonia, not just unequal refraction or visual discomfort, before assigning H52.32.