ICD-10 Code H05.352 – Exostosis of left orbit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.352 – Exostosis of left orbit
What it is
H05.352 identifies an exostosis, or bony outgrowth, located in the left orbit. Use it when documentation specifically states a benign bony projection involving the left eye socket.
Clinical signs
Clinical features vary; refer to documentation. Findings may include a palpable or imaging-confirmed bony mass in the left orbit, sometimes associated with local prominence or orbital crowding.
When to use this code
Use H05.352 when the provider documents exostosis of the left orbit, or when imaging clearly identifies a left orbital bony outgrowth and the diagnosis is recorded. Code it for confirmed left-sided orbital involvement, not for vague facial bone findings. Check documentation if laterality is unclear.
Do not use for
Do not use this code for nonspecific orbital swelling, soft-tissue masses, or exostosis in another skull or facial location. If the record does not specify the left orbit, check documentation.
Coding tip
Verify laterality and anatomic site in the note or imaging report before assigning H05.352.