Central retinal vein occlusion, bilateral, w rtnl neovas

This code signifies a blockage of the main vein draining blood from the retina in both eyes, complicated by the growth of new, abnormal blood vessels on the retinal surface. This neovascularization is a severe complication that can lead to vitreous hemorrhage and tractional retinal detachment, significantly impairing vision.

Apply this code when documentation confirms central retinal vein occlusion affecting both eyes, and specifically notes the presence of retinal neovascularization. This typically occurs in patients presenting with sudden, painless vision loss in both eyes, and ophthalmoscopic examination reveals dilated, tortuous retinal veins, retinal hemorrhages, cotton wool spots, and new vessel formation.

• Ensure documentation explicitly states "bilateral" involvement and "retinal neovascularization" to support this specific code.
• Do not confuse with branch retinal vein occlusion (H34.83-) or central retinal vein occlusion without neovascularization (H34.81-).
• Code any associated complications, such as vitreous hemorrhage (H43.1-) or retinal detachment (H33.-), as secondary diagnoses.