ICD-10 Code H35.439 – Paving Stone Degeneration of Retina, Unspecified Eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H35.439 – Paving stone degeneration of retina, unspecified eye
What it is
H35.439 identifies paving stone degeneration, a peripheral retinal degeneration with well-defined atrophic areas. Use it when the record specifies this retinal finding but does not name the affected eye.
Clinical signs
Findings are usually documented on dilated eye exam and may be incidental. Clinical features vary; refer to documentation, but the retina typically shows round or oval peripheral chorioretinal atrophic patches.
When to use this code
Use H35.439 when the ophthalmology note documents paving stone degeneration and laterality is not stated. It also fits when the condition is listed as a diagnosed retinal degeneration without signs of active retinal tear or detachment.
If the chart identifies the right or left eye, select the more specific laterality code instead. Code only what is documented; check documentation when the note uses a broader retinal degeneration term.
Do not use for
Do not use this code for retinal detachment, retinal tear, or other peripheral retinal lesions unless paving stone degeneration is specifically documented. Do not use it when the eye laterality is known and a more specific code applies.
Coding tip
Verify laterality in the exam note before defaulting to unspecified eye.