ICD-10 Code H05.839 – Thyroid Orbitopathy, Unspecified Orbit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.839 – Thyroid orbitopathy, unspecified orbit
What it is
This code identifies thyroid-related eye disease affecting the orbit, but the orbit is not further specified. Use it when documentation confirms thyroid orbitopathy and does not name a right, left, or other defined orbital site.
Clinical signs
Findings may include proptosis, eyelid retraction, periorbital swelling, diplopia, or discomfort. Clinical features vary; refer to documentation for the recorded orbital involvement.
When to use this code
Use H05.839 when the provider documents thyroid orbitopathy and states the orbit is unspecified. It fits encounters where eye findings are attributed to thyroid disease, but laterality or a more specific orbital diagnosis is not recorded.
Choose this code only when the chart supports thyroid-related orbital disease. If the note identifies a different orbital disorder or a more specific site, code that instead.
Do not use for
Do not use it for unspecified thyroid disease without eye involvement. Do not use it when the record clearly names a more specific orbital laterality or another eye condition.
Coding tip
Check for laterality and the exact provider wording before assigning H05.839.