1. A medical system, comprising: one or more implantable medical devices configured to deliver a medical therapy to a patient; and a portable electronic device on which a touch-sensitive user interface is implemented, wherein the user interface is configured to provide a visual representation of the medical therapy through a hierarchy that includes: a lower level representation of the medical therapy that corresponds to a stimulation program, wherein the stimulation program can run on the one or more implantable medical devices to cause the one or more implantable medical devices to stimulate a body tissue of the patient as part of the medical therapy, and wherein the stimulation program includes a plurality of configurable stimulation parameters; a middle level representation of the medical therapy that is at least one hierarchical level above the lower level representation of the medical therapy, wherein the middle level representation of the medical therapy corresponds to a stimulation program-set that includes a plurality of different stimulation programs; and an upper level representation of the medical therapy that is at least one hierarchical level above the middle level representation of the medical therapy, wherein the upper level representation of the medical therapy corresponds to a scrollable collection of stimulation program-sets, wherein the stimulation program-sets are represented by a plurality of digital cards, respectively.