In medicine, the Charlson Comorbidity Index (CCI) predicts the mortality for a patient who may have a range of concurrent conditions (comorbidities), such as heart disease, AIDS, or cancer (considering a total of 17 categories).
[4] The index was developed by Mary Charlson and colleagues in 1987, but the methodology has been adapted several times since then based on the findings of additional studies.
[9] Conditions can be identified using the International Classification of Diseases (ICD) diagnosis codes commonly used in patient records.
These comorbidities may be so severe that the costs and risks of cancer treatment would outweigh its short-term benefit.
The Charlson index, especially the Charlson/Deyo, followed by the Elixhauser have been most commonly referred by the comparative studies of comorbidity and multimorbidity measures.