Periostitis of bilateral orbits

This code signifies inflammation of the periosteum, the dense connective tissue covering the bone, affecting both orbital bones. This condition can lead to pain, swelling, and tenderness around the eyes, potentially impacting ocular function. It is a localized inflammatory process of the bone lining within the eye socket.

Use this code when documentation clearly indicates bilateral periostitis of the orbital bones, often presenting with localized tenderness and swelling. Supporting documentation should include physician notes detailing the diagnosis of periostitis and specifying its bilateral orbital location. This code is appropriate when the inflammation is confirmed to be of the periosteum rather than other orbital tissues.

• Ensure documentation specifies "periostitis" and not general orbital inflammation (e.g., orbital cellulitis) for accurate coding.
• Verify the laterality is explicitly stated as "bilateral" to avoid using unilateral codes.
• Look for underlying causes or associated conditions that may require additional coding, such as trauma or infection.