ICD-10 Code H53.0 – Amblyopia ex anopsia (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H53.0 – Amblyopia ex anopsia
What it is
Amblyopia ex anopsia is reduced vision in one eye, or less commonly both eyes, that develops because normal visual input was not established during early childhood. The eye itself may appear structurally normal.
Clinical signs
Common findings include decreased visual acuity, poor binocular vision, and reduced depth perception. Clinical features vary; refer to documentation, especially when the record notes childhood onset or suppression of one eye.
When to use this code
Use H53.0 when the provider documents amblyopia due to lack of visual stimulation, such as from untreated strabismus, anisometropia, or other early childhood visual deprivation. Code it when the diagnosis is confirmed, not merely suspected. Check documentation for the underlying cause if it is separately reported.
Do not use for
Do not use this code for blurred vision, refractive error alone, or transient visual loss without amblyopia. If the chart does not clearly identify amblyopia ex anopsia, check documentation.
Coding tip
Confirm the exact amblyopia type and any documented underlying eye disorder before assigning H53.0.