In an implantable cardiac stimulation device for implant into a patient, the stimulation device having a controller, a telemetry unit, and a set of sensors and pulse generators connected to a plurality of leads positioned at different locations within the heart of the patient, with at least two leads positioned within the atria or with at least two leads positioned within the ventricles, a method for comprising the steps of:
- receiving sensor signals from the sensors representative of electrical events detected at the respective locations of the leads;
- generating stimulation pulses using the pulse generators for delivery to the heart using selected leads;
- generating location-specific event codes using the controller, the event codes being based on the sensor signals and stimulation pulses, with at least two distinct location-specific event codes being associated the atria or with at least two distinct location-specific event codes being associated with the ventricles;
- and
- transmitting the location-specific event codes to an external programmer using the telemetry unit.