ICD-10 Code H33.42 – Traction detachment of retina, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H33.42 – Traction detachment of retina, left eye
What it is
H33.42 identifies traction detachment of the retina in the left eye. This means the retina has pulled away because scar tissue or fibrous membranes are tugging on it.
Clinical signs
Clinical features vary; refer to documentation. Common findings include reduced vision, visual distortion, or a retinal detachment noted on eye examination, often with traction from vitreoretinal disease.
When to use this code
Use this code when the provider documents traction detachment of the retina specifically in the left eye. It applies when the detachment is caused by traction, not by a tear or other mechanism. If the record does not clearly state laterality or traction, check documentation.
Do not use for
Do not use H33.42 for rhegmatogenous or serous retinal detachment, or when the right eye or both eyes are documented instead. Check documentation if the type of detachment is unclear.
Coding tip
Verify both the mechanism and laterality in the ophthalmology note before assigning H33.42.