ICD-10 Code H05.1 – Chronic inflammatory disorders of orbit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.1 – Chronic inflammatory disorders of orbit
What it is
H05.1 identifies chronic inflammation affecting the orbit, the bony cavity around the eye. Use it when documentation describes a persistent inflammatory orbital disorder rather than an acute infection or a mass.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include orbital pain, swelling, redness, proptosis, restricted eye movement, or visual disturbance when the inflammation involves orbital tissues.
When to use this code
Use H05.1 when the provider documents a chronic inflammatory condition of the orbit, such as chronic orbital inflammation or inflammatory orbital disease. Code it when the record clearly supports an ongoing orbital inflammatory process. Check documentation if the note does not specify chronicity or the exact orbital structure involved.
Do not use for
Do not use this code for acute orbital cellulitis, trauma, tumors, or nonspecific eye inflammation outside the orbit. If the diagnosis is uncertain, check documentation.
Coding tip
Confirm that the provider names the orbit and indicates chronic inflammation; vague “eye inflammation” wording is not enough.