ICD-10 Code H35.422 – Microcystoid Degeneration of Retina, Left Eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H35.422 – Microcystoid degeneration of retina, left eye
What it is
H35.422 identifies microcystoid degeneration affecting the left retina. Use it when documentation specifies this retinal degenerative change in the left eye.
Clinical signs
Clinical features vary; refer to documentation. Findings may be noted on retinal examination or imaging as cyst-like degenerative changes in the retina.
When to use this code
Use this code when the provider documents microcystoid degeneration of the retina in the left eye. It fits ophthalmology assessments, consult notes, or problem lists that clearly localize the condition to the left eye.
If the record only says retinal degeneration without eye laterality, check documentation before coding. Do not assume the left eye when laterality is missing or conflicting.
Do not use for
Do not use this code for unspecified retinal degeneration or for degeneration documented in the right eye or both eyes. Check documentation if the diagnosis is broader or differently named.
Coding tip
Always verify laterality in the provider note, because H35.422 is specific to the left eye.