ICD-10 Code H50.652 – Medial rectus muscle entrapment, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.652 – Medial rectus muscle entrapment, left eye
What it is
H50.652 identifies entrapment of the medial rectus muscle in the left eye. Use this code when the muscle is mechanically trapped, usually after orbital trauma or surgery, causing restricted eye movement.
Clinical signs
Typical findings include limited abduction or adduction depending on the injury pattern, diplopia, and pain with eye movement. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record clearly documents medial rectus muscle entrapment in the left eye, such as after an orbital fracture or operative complication. You may also use it when imaging or specialist notes confirm mechanical incarceration of the muscle. Check documentation if laterality or the specific entrapped structure is unclear.
Do not use for
Do not use this code for general strabismus, nonspecific eye movement disorder, or left eye pain without documented muscle entrapment. If the note does not confirm the medial rectus or left side, check documentation.
Coding tip
Verify both laterality and the exact entrapped muscle in the provider note before assigning H50.652.