ICD-10 Code H05.0 – Acute inflammation of orbit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.0 – Acute inflammation of orbit
What it is
H05.0 identifies an acute inflammatory process involving the orbit, the tissue surrounding the eye. Use it when documentation specifically states acute inflammation of the orbit or an acute orbital inflammatory disorder.
Clinical signs
Typical findings may include eye pain, swelling, redness, and tenderness around the orbit. Clinical features vary; refer to documentation for the exact diagnosis and laterality, if noted.
When to use this code
Use H05.0 when the provider documents acute inflammation of the orbit as the confirmed diagnosis. It may apply in ophthalmology or emergency encounters where the record describes an acute orbital inflammatory condition without a more specific coded cause.
If the note gives a different orbital disorder, a traumatic injury, or an infection with a more specific code, use that documented condition instead. Check documentation when the wording is unclear.
Do not use for
Do not use this code for general eye inflammation, conjunctivitis, or eyelid disorders. Also avoid it when the record supports a different orbital diagnosis or a more specific underlying cause.
Coding tip
Code H05.0 only when “orbit” is explicitly documented; otherwise, query the provider or code the documented site more precisely.