ICD-10 Code H33.119 – Cyst of ora serrata, unspecified eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H33.119 – Cyst of ora serrata, unspecified eye
What it is
This code identifies a cyst at the ora serrata, the junction where the retina meets the ciliary body, in an eye not otherwise specified as right or left. It is used when documentation notes the lesion but does not identify laterality.
Clinical signs
Clinical features vary; refer to documentation. The finding is often recorded on ophthalmic examination or imaging as a cystic lesion at the ora serrata, sometimes incidental and without symptoms.
When to use this code
Use H33.119 when the provider documents a cyst of the ora serrata and does not specify which eye is affected. It is appropriate for confirmed ocular findings in the retina/peripheral retina, not for suspected disease. If the record later specifies right or left eye, code that laterality instead.
Do not use for
Do not use this code for retinal detachment, peripheral retinal degeneration, or other eye cysts in a different location. Check documentation if the note describes a different retinal lesion or laterality.
Coding tip
Confirm the exact eye and lesion location before assigning H33.119, because laterality and site-specific wording can change the code.