Later, Quan and his colleagues (2011) provided updated weights for CCI, as treatment of some diseases has improved in time 5. CCI was later adapted for use with administrative data based on the International Classica-tion of Diseases 4. The comorbidity function allows calculation of Charlson and Elixhauser score using ICD9 or ICD10 codes and the following variations. is a weighted score that accounts for the presence of 19 comorbid diseases 1. Each comorbidity category is dichotomous - it is either present or it is not.
Variants of Charlson and Elixhauser Scores The Elixhauser Comorbidity Index is a method of categorizing comorbiditiesof patients based on the International Classification of Diseases (ICD)diagnosis codes found in administrative data, such as hospital abstracts data. The comorbidity function of this library is effectively a rewrite of the excellent R library comorbidity ( ) by Alessandro Gasparini ( ).Ĭomorbidipy also includes additional clinical risk calculators listed below. Python package to calculate comorbidity scores and other clinical risk scores. In external validation of other comorbidity indices, the C-statistic was 0.711, 0.688, 0.696, and 0.690 for the individual Elixhauser comorbidity indicators, the Agency for Healthcare Research and Quality (AHRQ) Elixhauser score, the Charlson comorbidity indicators, and the Charlson summary score, respectively, for 30-day mortality.
