Charlson Comorbidity Index Calculator

Charlson Comorbidity Index Explanation and Clinical Context Charlson Comorbidity Index is a widely used clinical scoring system that quantifies the burden of chronic disease and predicts the risk of mortality by assigning weights to specific comorbid conditions. It provides a structured method to estimate long term prognosis and helps clinicians stratify risk especially in hospitalized patients or those undergoing major procedures. Each condition contributes a predetermined weight reflecting its impact on mortality risk and the final score correlates with one year mortality and overall clinical severity.

The tool is valuable in clinical decision making research stratification and outcome prediction. Higher scores indicate a greater probability of adverse outcomes and therefore can guide intensity of monitoring and discussion of prognosis. Reference Charlson ME Pompei P Ales KL MacKenzie CR.

A new method of classifying prognostic comorbidity in longitudinal studies Development and validation. Journal of Chronic Diseases. 1987.