Underpayment by Medicare and Medicaid Fact Sheet, 2016 Update

Each year, the American Hospital Association (AHA) collects aggregate information on the payments and costs associated with care delivered to beneficiaries of Medicare and Medicaid by U.S. hospitals. The data used to generate these numbers come from the AHA’s Annual Survey of Hospitals, which is the nation’s most comprehensive source of hospital financial data. This fact sheet provides the definition of underpayment and technical information on how this figure is calculated on a cost basis for Medicare and Medicaid.

Payment rates for Medicare and Medicaid, with the exception of managed care plans, are set by law rather than through a negotiation process, as with private insurers. These payment rates are currently set below the costs of providing care, resulting in underpayment. Payments made by managed care plans contracting with the Medicare and Medicaid programs are generally negotiated with the hospital. Hospital participation in Medicare and Medicaid is voluntary. However, as a condition for receiving federal tax exemption for providing health care to the community, not-for-profit hospitals are required to care for Medicare and Medicaid beneficiaries. Also, Medicare and Medicaid account for more than 60 percent of all care provided by hospitals. Consequently, very few hospitals can elect not to participate in Medicare and Medicaid.

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