ICD-10 Code H33.313 – Horseshoe tear of retina without detachment, bilateral (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H33.313 – Horseshoe tear of retina without detachment, bilateral
What it is
This code identifies a horseshoe-shaped tear in both retinas without a retinal detachment. It means the retina is torn, but the tissue has not yet separated from the back of the eye.
Clinical signs
Findings may include flashes of light, new floaters, or a visible retinal break on exam. Clinical features vary; refer to documentation.
When to use this code
Use this code when documentation states a bilateral horseshoe retinal tear and explicitly notes no detachment. It also fits when the ophthalmology note confirms retinal breaks in both eyes without separation of the retina. Do not infer bilateral involvement from a single-eye finding.
Do not use for
Do not use this code if the retina is detached, or if the record describes a different retinal tear pattern. Check documentation when laterality or detachment status is unclear.
Coding tip
Verify both laterality and the absence of detachment in the ophthalmology report before assigning H33.313.