Kansal, Aman, Michael Gao, Suresh Balu, Marshall Nichols, Kristin Corey, Sehj Kashyap, and Mark Sendak. “Impact of Diagnosis Code Grouping Method on Clinical Prediction Model Performance: A Multi-Site Retrospective Observational Study.” International Journal of Medical Informatics 151 (July 2021): 104466. https://doi.org/10.1016/j.ijmedinf.2021.104466
The primary purpose of this work is to systematically assess the performance trade-offs on clinical prediction tasks of four diagnosis code groupings: AHRQ-Elixhauser, Single-level CCS, truncated ICD-9-CM codes, and raw ICD-9-CM codes.