Other hereditary corneal dystrophies, left eye

This code signifies a non-inflammatory, genetically determined disorder affecting the left cornea, leading to progressive vision impairment. These dystrophies are characterized by abnormal deposits or structural changes within the corneal layers, distinct from acquired corneal opacities or degenerations.

Apply this code when documentation specifies a hereditary corneal dystrophy affecting the left eye, and a more specific ICD-10-CM code (e.g., for Fuchs' endothelial dystrophy, lattice dystrophy) is not available. Supporting documentation should include genetic testing results, slit-lamp examination findings, or a clear ophthalmic diagnosis of a hereditary corneal dystrophy.

• Ensure laterality is clearly documented; this code is specific to the left eye.
• Avoid using this code if a more specific hereditary corneal dystrophy code exists (e.g., H18.51- for Fuchs' endothelial dystrophy).
• Confirm the condition is congenital or inherited, not an acquired corneal degeneration.