ICD-10 Code H05.829 – Myopathy of Extraocular Muscles, Unspecified Orbit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.829 – Myopathy of extraocular muscles, unspecified orbit
What it is
This code identifies a disorder of the extraocular muscles affecting the orbit, but the specific muscle problem is not further described. Use it when the record documents myopathy of the eye muscles and the orbit is unspecified.
Clinical signs
Clinical features vary; refer to documentation. Commonly, extraocular muscle disorders may be associated with abnormal eye movement, diplopia, or restricted gaze, but you should code only what is documented.
When to use this code
Use H05.829 when the provider documents myopathy of the extraocular muscles and does not specify the orbit. It is appropriate for ophthalmology or neurology notes describing orbital muscle dysfunction without a more precise diagnosis. If the chart names a different orbital disorder, choose the documented condition instead.
Do not use for
Do not use this code for nonspecific eye pain, general strabismus, or neurologic diplopia without documented extraocular muscle myopathy. Check documentation if the orbit is specified or if another diagnosis better explains the finding.
Coding tip
Confirm that the provider links the muscle disorder to the orbit and that no more specific orbital site is documented.