Percentage breakdown of deaths attributable to cardiovascular disease (United States: 2008). Source: National Heart, Lung, and Blood Institute from National Center for Health Statistics reports and data sets. *Not a true underlying cause. With any mention deaths, heart failure accounts for 35% of cardiovascular disease deaths. Total may not add to 100 because of rounding. Coronary heart disease includes International Classification of Diseases (ICD), 10th Revision codes I20–I25; stroke, I60–I69; heart failure, I50; high blood pressure, I10–I13; diseases of the arteries, I70–I78; and other, all remaining ICD I categories.