The Lancet

The scores are mapped from as many as ten reported ICD-9-CM or ICD-10-CM secondary diagnosis codes and are summed to create one value for each case, categorized as a total score of 0, 1, 2, or 3 or more. The Charlson Deyo score included in the PUF is the higher of the ICD-9 or ICD-10 submitted comorbid conditions. ................
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