ICD-10 Code H05.353 – Exostosis of bilateral orbits (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.353 – Exostosis of bilateral orbits
What it is
This code identifies exostosis, or bony overgrowth, affecting both orbits. Use it when documentation states bilateral orbital exostosis or a similar benign bony prominence in the eye sockets.
Clinical signs
Clinical features vary; refer to documentation. Findings may include a palpable or imaging-confirmed bony mass in both orbits, sometimes noted incidentally on exam or imaging.
When to use this code
Use H05.353 when the provider documents exostosis in both orbits and no more specific orbital disorder is reported. It is appropriate for confirmed bilateral orbital bony growths described in the assessment, imaging report, or operative note.
Choose this code when the record clearly distinguishes the condition from other orbital masses, trauma, or inflammatory disease. Check documentation if laterality is unclear or if the finding is only suspected.
Do not use for
Do not use this code for unilateral orbital exostosis, nonspecific orbital swelling, or non-bony orbital lesions. Check documentation if the note describes a different orbital diagnosis.
Coding tip
Confirm both laterality and the exact term “exostosis” before assigning H05.353.