"Diastolic dysfunction of the left ventricle" or the similar, "left ventricular diastolic dysfunction" is one that always stumps me. 429.9 seem like the obvious choice, but I don't feel like its capturing the scenario. Sometime I think 428.1 should be used as it describes "left ventricular failure" But then i think that if dysfunction is considered failure, perhaps I should be using 428.30 to satisfy the diastolic component. Are there any heart failure and echo pros out there. I don't get a whole lot of clarification from my training dept on this, other than I am able to use multiple codes from the heart failure category. BUT WHICH ONES!!! Sure would be helpful if this phrasing-which so many docs use- had a code of its own.