ICD-10 Code H35.432 – Paving Stone Degeneration of Retina, Left Eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H35.432 – Paving stone degeneration of retina, left eye
What it is
Paving stone degeneration is a peripheral retinal degeneration made up of small, well-defined areas of retinal thinning or atrophy. In the left eye, this code identifies that finding specifically.
Clinical signs
It is often found incidentally during a dilated eye exam and may be asymptomatic. Clinical features vary; refer to documentation for peripheral atrophic retinal lesions or associated retinal pigment changes.
When to use this code
Use H35.432 when the provider documents paving stone degeneration in the left retina or left eye. Apply it for confirmed retinal degeneration on exam, imaging, or specialist assessment when the condition is the reason for the note or a significant finding.
If the record only mentions retinal degeneration without laterality, check the documentation before coding. Use the left-eye code only when left laterality is clearly stated.
Do not use for
Do not use this code for nonspecific retinal changes, lattice degeneration, or retinal detachment. If the diagnosis is uncertain or not documented as paving stone degeneration, check documentation.
Coding tip
Always verify laterality from the ophthalmology note, because the code is eye-specific and right, left, and bilateral variants are different.