MAPS National Health Index | Condition Impact Conditions that Impact Health Of the more than 200 health condition categories measured by the BCBS Health Index, these 10 conditions have the greatest impact on the health and well-being of commercially insured Americans. The health impact of a condition is the proportion of adverse health that specific condition contributes to a defined population (by national, state, or county groupings). Top 10 National Conditions National Health Impact 1. Hypertension 12.5% 2. Major Depression 9% 3. High Cholesterol 8.6% 4. Coronary Artery Disease 7% 5. Diabetes Type II 5.5% 6. Other Substance Use Disorder* 3.4% 7. Alcohol Use Disorder 3.3% 8. Chronic Obstructive Pulmonary Disease (COPD) 3.3% 9. Psychotic Disorder 2.9% 10. Crohn's Disease/Ulcerative Colitis 2.7% *All substances are included in the category “Other Substance Use Disorder” except for tobacco and alcohol products. For counties with insufficient data, either no index score is given and counties do not appear on the national map, or no condition rankings are given for the county and results are signified by “N/A.”