Trib rtnl vein occlusion, unspecified eye, w rtnl neovas

This code signifies a blockage in a smaller branch of the retinal vein, leading to impaired blood flow from the retina. A key feature is the development of new, abnormal blood vessels on the retina (neovascularization) as a complication of this occlusion. This condition affects an unspecified eye.

Use this code when documentation confirms a diagnosis of tributary retinal vein occlusion with evidence of retinal neovascularization, but the specific eye affected (right or left) is not documented. This typically occurs in patients presenting with vision changes, and an ophthalmologist's examination reveals the characteristic findings.

• Ensure documentation explicitly states "retinal neovascularization" to support the fifth character '3'.
• If the affected eye is specified (right or left), use the more specific codes (H34.831- or H34.832-).
• Do not confuse with central retinal vein occlusion (H34.81-) or other types of retinal vascular occlusions.