Degeneration of iris (pigmentary), right eye

This code signifies a degenerative process affecting the iris of the right eye, specifically characterized by pigmentary changes. This condition often involves the dispersion of pigment from the iris, which can then deposit on other ocular structures. It is a form of iris atrophy or dystrophy.

Use this code when documentation explicitly states degeneration of the iris with a pigmentary component in the right eye. This diagnosis is typically made during an ophthalmological examination, often noting pigment dispersion syndrome or pigmentary glaucoma where the primary finding is iris degeneration. Supporting documentation would include slit-lamp examination findings detailing iris transillumination defects or pigment deposition.

• Ensure the documentation specifies "pigmentary" degeneration to differentiate from other forms of iris degeneration.
• Verify the laterality is clearly documented as "right eye" to avoid incorrect coding.
• Consider co-occurring conditions such as pigmentary glaucoma (H40.131) if also documented, and sequence appropriately.