A method, apparatus, and system, are provided for guiding a medical procedure relating to an implantable medical device operatively coupled to a cranial nerve. Communications between the implantable medical device and an external device are established. An implant procedure is performed for implanting the implantable medical device. A first diagnostic process of the implantable medical device is performed. Using the external device a first signal is received from the implantable medical device based on the first diagnostic process. A first instruction is displayed using the external device based upon the first signal received by the external device. The first instruction includes information relating to guiding the implant procedure.