ICD-10 Code H33.192 – Other retinoschisis and retinal cysts, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H33.192 – Other retinoschisis and retinal cysts, left eye
What it is
This code identifies retinoschisis or a retinal cyst affecting the left eye when the condition does not fit a more specific retinal diagnosis. It describes a localized splitting or cystic change in the retina.
Clinical signs
Findings may include decreased vision, peripheral field defects, or an incidental retinal lesion on eye examination. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents other retinoschisis or a retinal cyst in the left eye and no more specific retinal code applies. It is appropriate for confirmed left-eye findings on ophthalmic exam, imaging, or specialist assessment. Code only when laterality is clearly documented.
Do not use for
Do not use it for retinoschisis or retinal cysts in the right eye, bilateral disease, or unspecified laterality. Check documentation if the record instead describes retinal detachment, degeneration, or another named retinal disorder.
Coding tip
Confirm both the left-eye laterality and that the provider used “other retinoschisis” or “retinal cysts” before assigning H33.192.