History
The system was created by Robert Barclay Fetter and John D. Thompson at Yale University with the material support of the former Health Care Financing Administration (HCFA), now called the Centers for Medicare & Medicaid Services (CMS).
DRGs were first implemented in New Jersey, beginning in 1980 with a small number of hospitals partitioned into three groups according to their budget positions - surplus, breakeven, and deficit - prior to the imposition of DRG payment.
The New Jersey experiment continued for three years, with additional cadres of hospitals being added to the number of institutions each year until all hospitals in the Garden State were dealing with this prospective payment system.
DRGs were designed to be homogeneous units of hospital activity to which binding prices could be attached. A central theme in the advocacy of DRGs was that this reimbursement system would, by constraining the hospitals, oblige their administrators to alter the behavior of the physicians and surgeons comprising their medical staffs. Moreover, DRGs were designed to provide practice pattern information that administrators could use to influence individual physician behavior.
DRGs were intended to describe all types of patients in an acute hospital setting. The DRGs encompassed elderly patients as well as newborn, pediatric and adult populations.
The prospective payment system implemented as DRGs had been designed to limit the share of hospital revenues derived from the Medicare program budget, and in spite of doubtful results in New Jersey, it was decided in 1983 to impose DRGs on hospitals nationwide.
In that year, HCFA assumed responsibility for the maintenance and modifications of these DRG definitions. Since that time, the focus of all Medicare DRG modifications instituted by HCFA/CMS has been on problems relating primarily to the elderly population.
In 1987, New York state passed legislation instituting DRG-based payments for all non-Medicare patients. This legislation required that the New York State Department of Health (NYS DOH) evaluate the applicability of Medicare DRGs to a non-Medicare population. This evaluation concluded that the Medicare DRGs were not adequate for a non-Medicare population. Based on this evaluation, the NYS DOH entered into an agreement with 3M to research and develop all necessary DRG modifications. The modifications resulted in the initial APDRG, which differed from the Medicare DRG in that it provided support for transplants, high-risk obstetric care, nutritional disorders, and pediatrics along with support for other populations. One challenge in working with the APDRG groupers is that there is no set of common data/formulas that is shared across all states as there is with CMS. Each state maintains its own information.
In 1991, the top 10 DRGs overall were: normal newborn, vaginal delivery, heart failure, psychoses, cesarean section, neonate with significant problems, angina pectoris, specific cerebrovascular disorders, pneumonia, and hip/knee replacement. These DRGs comprised nearly 30 percent of all hospital discharges.
The history, design, and classification rules of the DRG system, as well as its application to patient discharge data and updating procedures, are presented in the CMS DRG Definitions Manual (Also known as the Medicare DRG Definitions Manual and the Grouper Manual). A new version generally appears every October. The 20.0 version appeared in 2002.
In 2007, author Rick Mayes described DRGs as:
| “ | ...the single most influential postwar innovation in medical financing: Medicare's prospective payment system (PPS). Inexorably rising medical inflation and deep economic deterioration forced policymakers in the late 1970s to pursue radical reform of Medicare to keep the program from insolvency. Congress and the Reagan administration eventually turned to the one alternative reimbursement system that analysts and academics had studied more than any other and had even tested with apparent success in New Jersey: prospective payment with diagnosis-related groups (DRGs). Rather than simply reimbursing hospitals whatever costs they charged to treat Medicare patients, the new model paid hospitals a predetermined, set rate based on the patient's diagnosis. The most significant change in health policy since Medicare and Medicaid's passage in 1965 went virtually unnoticed by the general public. Nevertheless, the change was nothing short of revolutionary. For the first time, the federal government gained the upper hand in its financial relationship with the hospital industry. Medicare's new prospective payment system with DRGs triggered a shift in the balance of political and economic power between the providers of medical care (hospitals and physicians) and those who paid for it - power that providers had successfully accumulated for more than half a century." | ” |
Read more about this topic: Diagnosis-related Group
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