Silver Book Fact
The largest components of medical expenditures attributes to diabetes are hospital inpatient care (50% of total cost), diabetes medication and supplies (12%), prescriptions to treat diabetes complications (11%), and physician office visits (9%).
American Diabetes Association. Economic Costs of Diabetes in the U.S. in 2007. Diabetes Care. 2008; 31(3): 1-20. http://care.diabetesjournals.org/content/31/3/596.full.pdf+html