This study assessed smoking-attributable fractions in healthcare spending between 2010 and 2014, overall and by insurance type (Medicaid, Medicare, private, out-of-pocket, other federal, other) and by medical service (inpatient, non-inpatient, prescriptions).  During 2010-2014, an estimated 11.7% of U.S. annual healthcare spending could be attributed to adult cigarette smoking, translating to annual healthcare spending of more than $225 billion dollars on total personal healthcare expenditures reported in 2014.  More than 50% of this smoking-attributable spending was funded by Medicare or Medicaid.  For Medicaid, the estimated healthcare spending attributable fraction increased more than 30% between 2010 and 2014.  Cigarette smoking exacts a substantial economic burden in the U.S.  Continuing efforts to implement proven population-based interventions have been shown to reduce the health and economic burden of cigarette smoking nationally.

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https://www.sciencedirect.com/science/article/pii/S0091743521001134?via%3Dihub