Nodular corneal degeneration, bilateral

This code describes a condition where abnormal, often opaque, nodules or deposits form on the cornea of both eyes, leading to impaired vision. This degeneration is typically progressive and can affect the clarity and smoothness of the corneal surface.

Use this code when documentation specifies nodular corneal degeneration affecting both eyes. This diagnosis is often made during a slit-lamp examination revealing characteristic corneal opacities. Supporting documentation should clearly indicate the bilateral nature of the condition.

• Ensure documentation explicitly states "bilateral" involvement; otherwise, a unilateral code (H18.451 or H18.452) would be more appropriate.
• Distinguish from other corneal degenerations (e.g., H18.40-H18.49) by the specific presence of nodular formations.
• Code any associated visual impairment or complications (e.g., corneal edema, recurrent erosions) separately if documented.