Trib rtnl vein occlusion, left eye, w rtnl neovas

This code signifies a blockage in a smaller vein branching off the main retinal vein in the left eye, specifically complicated by the growth of new, abnormal blood vessels on the retina. This neovascularization is a serious complication that can lead to further vision loss.

Use this code when documentation confirms a branch retinal vein occlusion in the left eye, and explicitly states the presence of retinal neovascularization. This typically occurs following ophthalmoscopic examination, fluorescein angiography, or OCT imaging.

• Ensure the documentation specifies "left eye" and clearly identifies the presence of "retinal neovascularization" as a complication.
• Distinguish this from central retinal vein occlusion (CRVO) or other types of retinal vascular occlusions.
• Do not use if neovascularization is not documented, as separate codes exist for BRVO without this complication.