Abstract: Techniques for patient medical care are disclosed. These techniques include identifying a plurality of rules relating to a purchase of a medical item. The techniques further include selecting a first rule, of the plurality of rules, to apply to the purchase, including generating a specificity score for each of the plurality of rules, based on setting one or more bit values in each specificity score using matching criteria between the respective rule and the purchase and comparing the specificity scores for the plurality of rules. The techniques further include facilitating supply of the medical item to a patient based on completing the purchase using the selected first rule.