The comorbidity software consists of three SAS computer programs for PCs. In longitudinal studies that include data from prior to October 1, 2015, researchers will still be reliant on ICD-9-CM based comorbidity algorithms. Once administrative data on hospital admissions coded with ICD-10-CM diagnosis codes becomes available, we can begin to re-evaluate the current indices. The downloading information for creating the index weights is provided below.Ĭurrently, the indices are only available for use with ICD-9-CM data. The indices were stable across multiple subsamples defined by demographic characteristics or clinical condition. The index scores performed as well as using all 29 Elixhauser Comorbidity variables separately. Identifying increased risk of readmission and in-hospital mortality using hospital administrative data: The AHRQ Elixhauser Comorbidity index.
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