CPT® Code 95981

Electronic analysis of implanted neurostimulator pulse generator system (eg, rate, pulse amplitude and duration, configuration of wave form, battery status, electrode selectability, output modulation, cycling, impedance and patient measurements) gastric neurostimulator pulse generator/transmitter; subsequent, without reprogramming

The CPT® Code 95981 refers to the electronic analysis of an implanted neurostimulator pulse generator system, specifically for a gastric neurostimulator. This procedure involves a comprehensive assessment of various parameters of the neurostimulator, including the rate, pulse amplitude and duration, configuration of the waveform, battery status, electrode selectability, output modulation, cycling, impedance, and patient measurements. Gastric electrical stimulation (GES) is a therapeutic approach used to manage gastroparesis, a condition characterized by delayed gastric emptying. The GES system employs a gastric pacemaker device that delivers mild electrical stimulation to the lower stomach nerves, promoting contractions that facilitate the movement of food through the digestive tract. During the procedure, the gastric neurostimulator system is evaluated following its placement or replacement, which is reported separately. Prior to the insertion of electrodes into the stomach, the neurostimulator device and its memory card are programmed with criteria tailored to the individual patient. After the electrode wires are placed, an interrogation procedure is conducted to assess the system's functionality. This involves attaching an interrogating head, checking the impedance between the wires, and making necessary adjustments if the impedance is outside the acceptable range. The process may require switching the polarity of the electrodes or adjusting the wires until the impedance is normalized. Once the implantation is completed, the interrogation and impedance analysis are repeated to ensure proper functioning. The stimulation settings, including the stimulation rate, pulse width, cycling times, and battery status, are meticulously checked and documented. After confirming that all components are operating correctly, the device is activated, and the interrogating head is removed. The subsequent electronic analysis, typically performed at six-month intervals, ensures that the GES system continues to function effectively without the need for reprogramming. If reprogramming is necessary, it is reported under a different code (CPT® 95982), which involves adjustments to the system parameters and verification of the results using the interrogator.