Challenges in Controlling Medicare Spending: Treating Highly Complex Patients
Chapter in NBER book Insights in the Economics of Aging (2017), David A. Wise, editor (p. 259 - 281)
Complex patients with many comorbid conditions are among the highest-cost users of Medicare, and they constitute an important source of growth in Medicare expenditures. This paper analyzes the universe of 2009 Medicare claims to characterize the complexity of patients with multiple comorbid conditions. The analysis finds that such patients cannot be placed into a small number of clinical bins; instead, the number of different combinations of comorbid conditions is staggeringly large and there are often very few patients with any particular combination of conditions. Furthermore, Medicare expenditures on patients grow non-linearly with the number of comorbid conditions afflicting patients. The results have important implications for existing risk adjustment methods used by Medicare, which do not sufficiently account for the way interactions among comorbid conditions tend to increase costs. Finally, the results suggest that disease management and care coordination programs will face a difficult challenge in coping with the heterogeneity of patient health conditions.This chapter is no longer available for free download, since the book has been published. To obtain a copy, you must buy the book.
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Comment, Hidehiko Ichimura
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