ICD-10 Code H05.811 – Cyst of right orbit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.811 – Cyst of right orbit
What it is
H05.811 identifies a cyst located in the right orbit, the bony socket that contains the eye. Use it when the documentation specifies a cystic lesion on the right side.
Clinical signs
Clinical features vary; refer to documentation. Orbital cysts may be noted on imaging or exam as a localized, cystic mass in the right orbit, sometimes associated with swelling or eye displacement.
When to use this code
Use this code when the provider documents a cyst of the right orbit, including cases identified by ophthalmology, radiology, or surgical findings. It is appropriate when the record clearly states the lesion is in the right orbit and no more specific diagnosis is given.
If laterality is documented as right, code the right-sided option rather than an unspecified orbital cyst. Check documentation when the note mentions an orbital mass, lesion, or cyst without confirming cystic nature.
Do not use for
Do not use it for cysts in the eyelid, conjunctiva, or other eye structures unless the orbit is specifically involved. Do not assign it when the lesion is described only as an orbital mass and cyst is not confirmed.
Coding tip
Confirm both the cyst diagnosis and right-sided laterality in the source note before assigning H05.811.