Most older adults in the U.S. have been diagnosed with one or more chronic illnesses, and managing these conditions presents a significant cost burden, according to a January study in JAMA Internal Medicine. The authors studied eight of the most common chronic conditions, both as single disease states and in clusters, and determined hypothetical annual out-of-pocket (OOP) costs for individual seniors enrolled in Medicare Advantage-Prescription Drug plans and Standalone Part D plans in 2009 and 2019. While annual costs for many of the conditions dropped, likely due to the availability of new generic drugs, OOP costs for atrial fibrillation, type 2 diabetes and heart failure skyrocketed. This was attributed to the introduction of brand-name therapies without generic alternatives that received clinical guideline recommendations. To remedy this, study authors urged Congress to act on drug pricing reforms, including allowing Medicare to negotiate list prices and cap annual OOP costs for seniors.