Serous retinal detachment, bilateral

This code signifies the separation of the neurosensory retina from the underlying retinal pigment epithelium due to the accumulation of serous fluid, affecting both eyes. This fluid accumulation can be idiopathic or secondary to various ocular or systemic conditions.

Apply this code when documentation clearly indicates serous retinal detachment present in both the right and left eyes. This diagnosis is typically supported by ophthalmoscopic examination, optical coherence tomography (OCT), or fluorescein angiography findings.

• Ensure documentation specifies bilateral involvement; otherwise, a unilateral code (H33.21 or H33.22) should be used.
• Always code any underlying cause of the serous retinal detachment, if known, as a primary diagnosis.
• Distinguish from rhegmatogenous retinal detachment (H33.0-) or tractional retinal detachment (H33.4-), which involve different etiologies and mechanisms.