A first value of an electrical stimulation parameter of an electrical stimulation therapy that resulted in a first physiological response for a patient is identified. The electrical stimulation therapy is delivered at least in part through a lead that is implanted inside the patient. Based on the first value, a limit of a second value of the electrical stimulation parameter that should result in a second physiological response for the patient is determined. An actual second value of the electrical stimulation parameter that actually resulted in the second physiological response for the patient is identified. Based on a comparison of the limit of the second value and the actual second value, an implantation of the lead is evaluated.
