ICD-10 Code H33.312 – Horseshoe tear of retina without detachment, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H33.312 – Horseshoe tear of retina without detachment, left eye
What it is
This code identifies a horseshoe-shaped tear in the retina of the left eye without a retinal detachment. Use it when documentation confirms the tear is present but the retina has not separated.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include a retinal tear on examination, often associated with flashes, floaters, or a visible horseshoe-shaped break.
When to use this code
Use H33.312 when the provider documents a horseshoe retinal tear in the left eye and specifically states there is no detachment. It applies to confirmed retinal breaks found on ophthalmic exam or imaging. Check documentation if laterality or detachment status is unclear.
Do not use for
Do not use this code for retinal detachment, even if a tear is present. Do not assign it when the eye, laterality, or absence of detachment is not documented; check documentation.
Coding tip
Verify both laterality and the “without detachment” detail before coding, because missing either element can change the code.