ICD-10 Code H33.31 – Horseshoe tear of retina without detachment (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H33.31 – Horseshoe tear of retina without detachment
What it is
H33.31 identifies a horseshoe-shaped retinal tear that has not yet led to retinal detachment. Use it when documentation confirms a break in the retina without separation of the retinal layers.
Clinical signs
Common findings include a retinal tear seen on dilated eye exam, sometimes with flashes, floaters, or a peripheral visual field defect. Clinical features vary; refer to documentation.
When to use this code
Use this code when the provider documents a horseshoe tear of the retina and explicitly states there is no detachment. It may also apply when the tear is identified during retinal evaluation or follow-up after symptoms such as flashes or floaters. Check documentation if the note mentions detachment, retinal break type, or laterality details.
Do not use for
Do not use H33.31 if the retina is detached or if the record describes another retinal break type. Do not code it when documentation is unclear; check documentation.
Coding tip
Confirm that “without detachment” is documented, because retinal tear and retinal detachment are coded differently.