ICD-10 Code H50.689 – Extraocular Muscle Entrapment, Unspecified, Unspecified Eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.689 – Extraocular muscle entrapment, unspecified, unspecified eye
What it is
This code identifies entrapment of an extraocular muscle in an unspecified eye when the exact muscle or eye is not documented. It usually reflects restricted eye movement from tissue trapping after trauma or another orbital process.
Clinical signs
Typical findings include limited ocular motility, diplopia, and pain with eye movement. Clinical features vary; refer to documentation, especially when imaging or exam notes describe a trapped muscle.
When to use this code
Use H50.689 when the record clearly states extraocular muscle entrapment but does not specify the involved eye or muscle. It is appropriate for coding after orbital injury or surgery when the provider documents entrapment without further detail. Check documentation if the note only mentions swelling, fracture, or general restriction.
Do not use for
Do not use this code for nonspecific strabismus, diplopia alone, or orbital fracture without documented muscle entrapment. If the involved eye or muscle is identified, code the more specific documented diagnosis.
Coding tip
Code from the provider’s exact wording; if “entrapment” is not documented, do not assume it from imaging alone.