ICD-10 Code H53.32 – Fusion with defective stereopsis (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H53.32 – Fusion with defective stereopsis
What it is
H53.32 identifies impaired binocular fusion with reduced stereopsis, meaning the eyes do not work together normally to create depth perception. Use it when documentation specifically describes defective fusion or stereopsis.
Clinical signs
Patients may report poor depth perception, eye strain, or trouble judging distance. Clinical features vary; refer to documentation, and confirm that the record notes fusion problems or defective stereopsis rather than a different binocular vision disorder.
When to use this code
Use this code when the provider documents fusion with defective stereopsis as the diagnosis, including ophthalmology or optometry assessments. It may apply when testing shows reduced binocular depth perception and the chart links the finding to this specific condition. Check documentation if the note only mentions blurred vision, amblyopia, or strabismus without this diagnosis.
Do not use for
Do not use H53.32 for general visual disturbance, diplopia, or eye misalignment unless defective fusion and stereopsis are documented. Do not assume this code from abnormal vision testing alone.
Coding tip
Code H53.32 only when the provider explicitly documents defective fusion or stereopsis; otherwise, query or check documentation.