Trib rtnl vein occlusion, bilateral, w rtnl neovas

This code signifies a blockage in a smaller vein draining blood from the retina in both eyes, specifically complicated by the growth of abnormal new blood vessels on the retina. These new vessels are fragile and can lead to bleeding or fluid leakage, severely impacting vision. It represents a significant and vision-threatening complication of retinal vein occlusion.

Apply this code when documentation explicitly states bilateral tributary (branch) retinal vein occlusion and clearly indicates the presence of retinal neovascularization in both eyes. This diagnosis is typically made following ophthalmoscopic examination, fluorescein angiography, or optical coherence tomography (OCT) confirming the vascular changes.

• Ensure documentation specifies "bilateral" involvement and explicitly mentions "retinal neovascularization" to support this specific code.
• Distinguish from central retinal vein occlusion (CRVO) or other types of retinal vascular occlusions.
• Code any associated complications, such as vitreous hemorrhage (H43.1-) or neovascular glaucoma (H40.5-), as secondary diagnoses.