Microcystoid degeneration of retina, bilateral

This code signifies a degenerative condition affecting the retina in both eyes, characterized by the formation of microscopic cysts within the retinal layers. This degeneration can lead to retinal thinning and potential visual disturbances, though it is often asymptomatic in its early stages.

Use this code when documentation explicitly states microcystoid degeneration of the retina affecting both eyes. This diagnosis is typically made during an ophthalmic examination, often identified through optical coherence tomography (OCT) or funduscopic examination.

• Ensure the documentation specifies "bilateral" involvement; otherwise, use the appropriate unilateral code (H35.421 or H35.422).
• Do not confuse with other retinal degenerations like lattice degeneration (H35.41x) or retinoschisis (H35.3x).
• Code any associated visual impairment or complications separately, if documented.