Data quality and DRGs: An assessment of the reliability of federal beneficiary discharge data in selected Manhattan hospitals |
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Authors: | Ellen Cohen PhD Danielle Bernier BA Sylvaine Tam MS David Schimel Esq Allen H Postel MD Stephen Scheidt MD Joseph B Stamm MPA |
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Institution: | (1) NYCHSRO, 114 Fifth Avenue, 10011 New York, New York |
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Abstract: | New York County Health Services Review Organization (NYCHSRO), the physicians' professional standards review organization of Manhattan, examined whether diagnostic coding errors identified in Manhattan hospitals would affect reimbursement under a diagnostic-related group (DRG) method of financing inpatient services. A sampling of 1,027 Medicare and Medicaid cases representing discharges from 18 Manhattan hospitals during 1982 and 1983 revealed incorrect DRG assignment for 17.5% of patient record abstracts, but these appear to have been unsystematic rather than deliberate errors. The difference between estimated reimbursement based on original and reabstracted records was not statistically significant either in the aggregate or for specific hospitals. It is emphasized that while New York State's Prospective Hospital Reimbursement Methodology (in effect during the study period) is not solely dependent upon DRG's case-mix is one of several factors used to make adjustments to existing per diem rates. A key recommendation is that hospitals conduct internal monitorings with all involved departments to improve the quality of the data abstracting process.Dr. Cohen is Director of the Data Division and Special Projects Development at New York County Health Services Review Organization (NYCHSRO). Ms. Bernier is Assistant Director for Data Collection and Quality, and Ms. Tam is Assistant Director for Data Analysis. Mr. Schimel was formerly NYCHSRO's Executive Director and Dr. Postel is NYCHSRO's Medical Director and is an Associate Professor of Surgery at New York University Medical School. Dr. Scheidt is NYCHSRO's Chairman of the Board of Directors and a Professor of Medicine at the Cornell University Medical College. Mr. Stamm is NYCHSRO's current Executive Director. |
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