AI Article Synopsis
- Administrative data can effectively identify patients with Critical Limb Ischemia (CLI) through ICD-9-CM-based codes, a method not previously explored.
- A study involved 126 CLI cases confirmed by a vascular specialist and matched controls, leading to the development of algorithms to improve patient identification.
- The most effective algorithm, with a sensitivity of 0.92, can enhance clinical care, research, and quality improvement efforts within health systems by identifying more CLI patients.
Article Abstract
Administrative data have been used to identify patients with various diseases, yet no prior study has determined the utility of International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM)-based codes to identify CLI patients. CLI cases (n=126), adjudicated by a vascular specialist, were carefully defined and enrolled in a hospital registry. Controls were frequency matched to cases on age, sex and admission date in a 2:1 ratio. ICD-9-CM codes for all patients were extracted. Algorithms were developed using frequency distributions of these codes, risk factors and procedures prevalent in CLI. The sensitivity for each algorithm was calculated and applied within the hospital system to identify CLI patients not included in the registry. Sensitivity ranged from 0.29 to 0.92. An algorithm based on diagnosis and procedure codes exhibited the best overall performance (sensitivity of 0.92). Each algorithm had differing CLI identification characteristics based on patient location. Administrative data can be used to identify CLI patients within a health system. The algorithms, developed from these data, can serve as a tool to facilitate clinical care, research, quality improvement, and population surveillance.
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| http://dx.doi.org/10.1177/1358863X14559589 | DOI Listing |
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