ICD-10 Code H50.629 – Inferior oblique muscle entrapment, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H50.629 – Inferior oblique muscle entrapment, unspecified eye
What it is
This code identifies entrapment of the inferior oblique muscle in an unspecified eye. Use it when documentation shows the muscle is trapped, but the record does not specify the side.
Clinical signs
Clinical features vary; refer to documentation. Typical notes may mention restricted eye movement, diplopia, or abnormal ocular alignment consistent with muscle entrapment.
When to use this code
Use H50.629 when the provider documents inferior oblique muscle entrapment and does not identify right or left eye. It may appear in postoperative, traumatic, or other eye-structure injury records. Code only when the diagnosis is clearly stated in the chart.
Do not use for
Do not use this code for general strabismus, nonspecific ocular pain, or eye muscle spasm without documented entrapment. Check documentation if the side is known or if another condition better explains the finding.
Coding tip
Confirm the exact eye and the word “entrapment” in the provider note before assigning H50.629.