ICD-10 Code H33.21 – Serous retinal detachment, right eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H33.21 – Serous retinal detachment, right eye
What it is
H33.21 identifies a serous, or exudative, detachment of the retina in the right eye. It means fluid has collected under the retina without a tear or break causing the separation.
Clinical signs
Clinical features vary; refer to documentation. Common findings include blurred or distorted vision and retinal elevation on examination, with subretinal fluid noted by the eye specialist.
When to use this code
Use this code when the provider documents serous retinal detachment in the right eye and does not describe a retinal tear or rhegmatogenous detachment. It is appropriate for confirmed right-eye involvement in the assessment or diagnosis. Check documentation if the laterality is unclear or if the detachment type is not specified.
Do not use for
Do not use H33.21 for retinal detachment caused by a tear, traction, or trauma. Also avoid it when the record describes the left eye, both eyes, or the condition is not clearly documented.
Coding tip
Verify laterality and detachment type in the ophthalmology note before assigning H33.21.