ICD-10 Code H51.11 – Convergence Insufficiency (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H51.11 – Convergence insufficiency
What it is
Convergence insufficiency is a binocular vision disorder in which the eyes do not turn inward together well enough for near work. It can make reading or close tasks uncomfortable.
Clinical signs
Common findings include eye strain, blurred near vision, double vision at close range, and difficulty sustaining focus on reading. Clinical features vary; refer to documentation.
When to use this code
Use H51.11 when the record clearly identifies convergence insufficiency as the diagnosis. Code it for outpatient or specialist notes describing symptomatic near-vision problems with confirmed binocular convergence weakness. If the provider documents only nonspecific eye strain, check documentation before assigning this code.
Do not use for
Do not use this code for general blurred vision, unspecified diplopia, or other eye movement disorders without documented convergence insufficiency. Check documentation if the diagnosis is uncertain.
Coding tip
Assign the code only when the provider names convergence insufficiency, not when near-work symptoms are listed alone.