ICD-10 Code H33.103 – Unspecified Retinoschisis, Bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H33.103 – Unspecified retinoschisis, bilateral
What it is
H33.103 identifies retinoschisis affecting both eyes when the type is not further specified. Retinoschisis is a splitting of the retinal layers, and this code does not name a cause or subtype.
Clinical signs
Clinical features vary; refer to documentation. Findings may include reduced visual acuity, peripheral visual field defects, or incidental retinal splitting on eye examination.
When to use this code
Use this code when the provider documents bilateral retinoschisis but does not specify juvenile, degenerative, or another subtype. It also fits cases where both eyes are involved and the record only says “unspecified retinoschisis.”
If the note describes a more specific retinoschisis diagnosis, code that condition instead. Check documentation for laterality and whether the finding is congenital, degenerative, or otherwise classified.
Do not use for
Do not use H33.103 for unilateral retinoschisis or for retinoschisis with a documented specific type. Do not use it when the record instead describes retinal detachment or another retinal disorder.
Coding tip
Verify both laterality and specificity in the ophthalmology note before assigning H33.103.