Siderosis of eye, right eye

This code describes siderosis affecting the right eye, a condition characterized by iron deposition within ocular tissues. This typically results from a retained iron-containing intraocular foreign body, leading to progressive damage to structures such as the iris, lens, and retina. Manifestations can include heterochromia, cataract formation, and retinal degeneration.

Use this code when documentation clearly indicates iron deposition within the right eye, often secondary to a penetrating ocular injury with a metallic foreign body. Supporting documentation should specify the laterality (right eye) and confirm the diagnosis of siderosis through clinical examination findings, imaging (e.g., CT scan), or a history of retained intraocular foreign body.

• Ensure laterality is precisely documented; separate codes exist for the left eye and bilateral involvement.
• Always code the underlying cause of the siderosis, such as a retained intraocular foreign body (e.g., T89.7xxA for retained foreign body in penetrating wound of orbit and eye, initial encounter), as a primary or secondary diagnosis.
• Distinguish from other forms of ocular metallosis, such as chalcosis, which involves copper deposition and has different ICD-10-CM codes.