Diagnostic groupings included in the Charlson and Elixhauser Indices
| Charlson | Elixhauser |
| Myocardial infarction | Congestive heart failure |
| Congestive heart failure | Cardiac arrhythmias |
| Peripheral vascular disease | Valvular disease |
| Cerebrovascular disease | Pulmonary circulation disorders |
| Dementia | Peripheral vascular disorders |
| Chronic pulmonary disease | Hypertension uncomplicated |
| Rheumatic disease | Hypertension complicated |
| Peptic ulcer disease | Paralysis |
| Mild liver disease | Other neurological disorders |
| Diabetes without chronic complication | Chronic pulmonary disease |
| Diabetes with chronic complication | Diabetes uncomplicated |
| Hemiplegia or paraplegia | Diabetes complicated |
| Renal disease | Hypothyroidism |
| Malignancy | Renal failure |
| Moderate/severe liver disease | Liver disease |
| Metastatic solid tumour | Peptic ulcer disease excluding bleeding |
| AIDS/HIV | AIDS/HIV |
| Lymphoma | |
| Metastatic cancer | |
| Solid tumour without metastases | |
| Rheumatoid arthritis/collagen vascular diseases | |
| Coagulopathy | |
| Obesity | |
| Weight loss | |
| Fluid and electrolyte disorders | |
| Blood loss anaemia | |
| Deficiency anaemia | |
| Alcohol abuse | |
| Drug abuse | |
| Psychoses | |
| Depression |