ICD-10 Code H50.6 – Mechanical strabismus (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.6 – Mechanical strabismus
What it is
Mechanical strabismus is eye misalignment caused by a physical restriction or abnormality affecting eye movement. You use this code when the deviation is due to a mechanical problem, not a nerve palsy.
Clinical signs
Typical findings include limited ocular motility, misaligned eyes, and diplopia in some patients. Clinical features vary; refer to documentation for the specific mechanical cause.
When to use this code
Use H50.6 when the provider documents strabismus from a restrictive or mechanical cause, such as scarring, entrapment, or orbital abnormality. Code it when the chart clearly distinguishes this from paralytic or congenital strabismus. Check documentation if the cause is not explicit.
Do not use for
Do not use this code for paralytic strabismus, accommodative strabismus, or unspecified eye deviation. If the record only says “strabismus” without a mechanical cause, use the documented diagnosis instead.
Coding tip
Confirm the note identifies a mechanical restriction or structural cause before assigning H50.6.