Figure 5. How Procedures Are Billed, by Body System

MEDICARE: Cardiovascular, 43%; Digestive, 22%; Musculoskeletal, 10%; All other, 25%. MEDICAID: Obstetrical, 38%; Cardiovascular, 14%; Digestive, 11%; Respiratory, 10%; All other, 27%. PRIVATELY INSURED: Obstetrical, 28%; Cardiovascular, 20%; Digestive, 13%; Genital (female), 9%; Musculoskeletal, 7%; All other, 23%. UNINSURED: Obstetrical, 22%; Cardiovascular, 20%; Digestive, 18%; Musculoskeletal, 9%; Skin, 7%; All other, 24%. NOTE: Percentages of 6 percent or less are not shown separately.

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