ICD-10 Code H50.662 – Superior oblique muscle entrapment, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.662 – Superior oblique muscle entrapment, left eye
What it is
This code identifies entrapment of the left superior oblique muscle, usually from trauma or postoperative restriction. It indicates a mechanical problem affecting eye movement, not a general eye pain diagnosis.
Clinical signs
Typical findings include limited movement of the left eye and abnormal ocular alignment, often with diplopia. Clinical features vary; refer to documentation for the specific pattern of restriction and laterality.
When to use this code
Use this code when the provider documents superior oblique muscle entrapment in the left eye, such as after orbital injury or surgery. You should also use it when imaging or exam findings support a restrictive extraocular muscle problem and the documentation is clear. Check documentation if the cause is not specified.
Do not use for
Do not use this code for nonspecific strabismus, isolated diplopia, or general orbital trauma without documented muscle entrapment. If the record does not confirm the left superior oblique muscle, check documentation.
Coding tip
Confirm both the involved muscle and the left-eye laterality in the record before assigning H50.662.