Chalcosis, left eye

This code signifies the presence of chalcosis, a foreign body reaction in the left eye caused by copper deposits. These deposits typically result from retained intraocular foreign bodies containing copper, leading to ocular tissue damage and functional impairment.

Use this code when documentation explicitly states chalcosis affecting the left eye. This diagnosis is supported by a history of ocular trauma with retained copper-containing foreign material, confirmed by imaging studies or direct visualization, and clinical signs of copper deposition.

• Ensure laterality is accurately documented; this code is specific to the left eye.
• Code any associated retained intraocular foreign body (e.g., T16.1XXA) as a primary diagnosis if it is the cause of the chalcosis.
• Distinguish from siderosis (iron deposits) which has a different code (H44.32-).