Wiki dx code

I would look at 459.81 Venous Insufficiency, this is an unspecified code, but without a little more information its the best I could come up with
 
I would also code it, 459.81 Venous Insufficiency. From info below, it appears that the reflux is a physiology of venous insufficiency.

"In venous insufficiency states, venous blood escapes from its normal antegrade path of flow and refluxes backward down the veins into an already congested leg."
 
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