ICD-10 Code H33.193 – Other retinoschisis and retinal cysts, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H33.193 – Other retinoschisis and retinal cysts, bilateral
What it is
This code identifies bilateral retinoschisis or retinal cysts not otherwise classified. Use it when documentation shows both eyes are affected and the condition is described as other retinoschisis or retinal cysts.
Clinical signs
Clinical features vary; refer to documentation. Findings may include retinal splitting or cystic changes on eye examination, often noted during ophthalmic evaluation or imaging.
When to use this code
Use this code when the provider documents bilateral retinoschisis or bilateral retinal cysts and no more specific ICD-10-CM option applies. It is appropriate for confirmed diagnoses in both eyes, including charted retinal splitting or cystic retinal changes. Check documentation if laterality is unclear.
Do not use for
Do not use this code for unilateral disease, unspecified laterality, or retinal detachment. If the record describes a different retinal disorder, choose the more specific diagnosis.
Coding tip
Verify that the provider explicitly documents bilateral involvement before assigning H33.193.