2 = Hemiplegia, Mod or severe renal dz, Diabetes with end organ damage, Any
tumor, Leukemia, Lymphoma
3 = Moderate or severe liver dz
6 = Metastatic solid tumor, AIDS
References
1. 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; 40:373-83
http://www.ncbi.nlm.nih.gov/pubmed/3558716