Granular corneal dystrophy, left eye

This code signifies a hereditary corneal dystrophy characterized by the accumulation of granular deposits within the corneal stroma of the left eye. These deposits can lead to corneal opacification, visual impairment, and recurrent erosions. The condition is progressive, with symptoms typically appearing in early adulthood.

Use this code when documentation explicitly states a diagnosis of granular corneal dystrophy affecting the patient's left eye. This diagnosis is often confirmed through slit-lamp examination revealing characteristic granular opacities. Supporting documentation should include ophthalmological findings and potentially genetic testing results.

• Ensure laterality is accurately documented and coded; this code is specific to the left eye.
• Differentiate from other corneal dystrophies (e.g., lattice, macular) which have distinct ICD-10-CM codes.
• Code any associated complications, such as corneal erosion (T85.69x, H16.0x), separately if documented.