ICD-10 Code H50.81 – Duane’s syndrome (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.81 – Duane’s syndrome
What it is
H50.81 identifies Duane’s syndrome, a congenital eye movement disorder. It is used when one or both eyes have limited horizontal movement because of abnormal innervation of the extraocular muscles.
Clinical signs
Typical findings include restricted abduction, sometimes restricted adduction, and globe retraction on attempted adduction. Clinical features vary; refer to documentation.
When to use this code
Use H50.81 when the provider documents Duane’s syndrome, Duane retraction syndrome, or a similar confirmed diagnosis. Code it for congenital cases with characteristic motility findings, even if the visit is for evaluation rather than treatment. Check documentation if laterality is specified elsewhere.
Do not use for
Do not use this code for nonspecific strabismus, isolated diplopia, or eye movement limitation without a documented Duane’s syndrome diagnosis. If the record does not clearly support the condition, check documentation.
Coding tip
Confirm the exact documented diagnosis and laterality details before assigning H50.81.