ICD-10 Code H05.343 – Enlargement of bilateral orbits (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.343 – Enlargement of bilateral orbits
What it is
This code identifies abnormal enlargement of both bony eye sockets. Use it when documentation states bilateral orbital enlargement, not simply swelling around the eyes.
Clinical signs
Findings may include prominent eyes, widened orbital appearance, or imaging showing enlarged orbital cavities. Clinical features vary; refer to documentation.
When to use this code
Use H05.343 when the provider documents bilateral enlargement of the orbits on exam, imaging, or a specialist note. It may appear in records describing congenital, developmental, or acquired orbital enlargement, but you should code only what is clearly stated.
Do not use for
Do not use this code for eyelid swelling, periorbital edema, or exophthalmos unless orbital enlargement is specifically documented. Check documentation if the record only describes eye protrusion or facial asymmetry.
Coding tip
Code the laterality exactly as documented; if the note says bilateral orbits, H05.343 is the correct choice.