Lattice corneal dystrophy, left eye

This code signifies a genetic, progressive corneal disorder characterized by the accumulation of amyloid deposits within the corneal stroma of the left eye. These deposits form lattice-like patterns, leading to recurrent corneal erosions, pain, and progressive vision impairment.

Apply this code when documentation confirms a diagnosis of lattice corneal dystrophy affecting the patient's left eye. This diagnosis is typically made through slit-lamp examination revealing the characteristic lattice-like opacities and may be supported by genetic testing.

• Ensure laterality is clearly documented for the affected eye; do not use for bilateral or unspecified cases.
• Distinguish from other corneal dystrophies like granular or macular, which have different ICD-10-CM codes.
• Code any associated complications, such as corneal erosions (T85.698A), separately if documented.