Charlson Comorbidity Index (CCI) Calculator
Estimate 10-year survival probability based on weighted comorbidity scores. Essential tool for geriatric assessment and risk stratification.
About
Risk stratification in multimorbid patients requires quantifying the cumulative burden of disease. The Charlson Comorbidity Index (CCI) assigns integer weights to specific clinical conditions based on their association with mortality. Age acts as a multiplier in this system, acknowledging that physiological reserve diminishes over time.
This tool streamlines the scoring process for clinicians. It aggregates weights from 19 specific conditions and an age-adjustment factor. The resulting score correlates with 10-year survival probability. High scores indicate a need for adjusted therapeutic targets, careful surgical risk assessment, and potentially palliative care planning rather than aggressive intervention.
Formulas
The total score S is the summation of weighted comorbidities plus the age factor.
S = ∑wi + AgeScore
Age Weights:
- < 50 years: 0 points
- 50-59 years: 1 point
- 60-69 years: 2 points
- 70-79 years: 3 points
- ≥ 80 years: 4 points
Reference Data
| CCI Score | 10-Year Survival (P) | Risk Level |
|---|---|---|
| 0 | 98% | Low |
| 1 | 96% | Low |
| 2 | 90% | Moderate |
| 3 | 77% | Moderate |
| 4 | 53% | High |
| 5 | 21% | Very High |
| ≥ 6 | < 2% | Critical |