Bullous keratopathy, bilateral

This code signifies a degenerative corneal condition characterized by the formation of fluid-filled blisters (bullae) on the surface of both corneas. This occurs due to endothelial dysfunction, leading to corneal edema and impaired vision.

Use this code when documentation explicitly states "bullous keratopathy" affecting both eyes. This often arises as a complication of intraocular surgery (e.g., cataract extraction), trauma, or other corneal diseases. Supporting documentation should include ophthalmologist notes detailing bilateral corneal edema and bullae formation.

• Ensure documentation specifies "bilateral" involvement; otherwise, use the appropriate unilateral code (H18.11 or H18.12).
• Do not confuse with other corneal dystrophies unless bullous changes are specifically noted.
• Code any underlying cause of the bullous keratopathy (e.g., aphakia, pseudophakia) as a secondary diagnosis.