ICD-10 Code H05.032 – Periostitis of Left Orbit (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H05.032 – Periostitis of left orbit
What it is
This code identifies inflammation of the periosteum, the tissue covering the bone around the left eye socket. Use it when documentation specifically states periostitis of the left orbit.
Clinical signs
Clinical features vary; refer to documentation. Findings may include localized orbital pain, tenderness, swelling, or signs of inflammation around the left orbit.
When to use this code
Use H05.032 when the provider documents periostitis limited to the left orbit. It is appropriate when the record clearly distinguishes the left side and the condition is not described more generally as orbital inflammation.
If the note uses another orbital diagnosis, such as cellulitis or abscess, code that documented condition instead. Check documentation when laterality or the exact anatomic site is unclear.
Do not use for
Do not use this code for nonspecific eye pain, general orbital swelling, or right-sided or bilateral orbital disease. Do not use it when the chart names a different orbital disorder.
Coding tip
Verify both laterality and the exact term “periostitis” before assigning H05.032.