A method for comparing a hospital's existing supply expenses to another hospital's existing supply expenses is described. The method includes determining a number of patient cases (Ci) associated with each diagnosis related classification (DRCi) from a plurality of DRCis, receiving a supply mix index weight (SMIi) value for each DRCi from the plurality of DRCis, and determining, with a processor, a weighted supply mix index value for each of the plurality of DRCis based on the SMIi value for each DRCi and the Ci for the corresponding DRCi. The method also includes determining an overall HCP supply mix index (HCPSMI) for the hospital based on the sum of the weighted supply mix index value for each of the plurality of DRCis and the sum of Ci for each of the plurality of DRCis, and outputting the HCPSMI for the hospital. Other methods, systems, and machine-readable media are also described.