ICD-10 Code H50.51 – Esophoria (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.51 – Esophoria
What it is
Esophoria is a latent inward eye deviation that appears when binocular vision is disrupted. The eyes usually align normally, but one eye tends to drift inward when fusion is broken.
Clinical signs
Patients may report eye strain, intermittent blurred vision, or double vision, especially with fatigue or prolonged near work. Clinical features vary; refer to documentation.
When to use this code
Use H50.51 when the provider documents esophoria, latent inward deviation, or a phoria specifically identified on examination. This code fits routine ophthalmology or optometry assessments when the finding is recorded without a manifest strabismus diagnosis.
If the note only says “eye misalignment” or “double vision,” check documentation before assigning this code. Confirm that the provider identified esophoria rather than another alignment disorder.
Do not use for
Do not use this code for constant inward eye deviation, which is esotropia, or for nonspecific visual complaints without a documented phoria. Check documentation.
Coding tip
Code H50.51 only when the chart clearly documents esophoria; if the deviation type is unclear, query the provider.