Siderosis of eye, bilateral

This code signifies the presence of siderosis, a condition caused by iron deposition, affecting both eyes. This iron accumulation typically results from a retained intraocular foreign body containing iron, leading to progressive damage to ocular tissues.

Apply this code when documentation confirms bilateral ocular siderosis, often following a history of penetrating eye trauma with a metallic foreign body. Supporting documentation should clearly state the diagnosis of siderosis and specify its bilateral involvement.

• Ensure documentation explicitly states "bilateral" involvement; otherwise, use the appropriate unilateral code.
• Always code the underlying cause (e.g., retained intraocular foreign body, if still present) in addition to the siderosis.
• Distinguish from hemosiderosis, which is iron deposition from hemorrhage, not a foreign body.