ICD-10 Code H33.042 – Retinal detachment with retinal dialysis, left eye (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H33.042 – Retinal detachment with retinal dialysis, left eye
What it is
This code identifies a retinal detachment in the left eye caused by retinal dialysis, a separation of the retina at its attachment near the ora serrata. Use it when the documentation specifies both the detachment and the dialysis.
Clinical signs
Clinical features vary; refer to documentation. Commonly recorded findings include decreased vision, flashes, floaters, or a visual field defect, with exam or imaging showing left-eye retinal detachment associated with dialysis.
When to use this code
Use H33.042 when the provider documents retinal detachment with retinal dialysis in the left eye. It is appropriate for ophthalmology notes, operative reports, or confirmed diagnostic imaging that clearly identifies the left eye and the dialysis cause.
If the record only says retinal detachment without dialysis, or does not specify the eye, check documentation before coding. Do not assume laterality or mechanism from a general detachment diagnosis.
Do not use for
Do not use this code for retinal detachment in another eye or for unspecified retinal detachment. Also avoid it when dialysis is not documented or when the finding is only a retinal tear without detachment.
Coding tip
Confirm both laterality and the dialysis etiology in the chart before assigning H33.042.