CPT® Code 90868

Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive therapeutic procedure primarily utilized for the treatment of depression in patients who have not responded to other treatment options. This innovative technique may also be applied to address various other mental health conditions, including anxiety disorders, obsessive-compulsive disorder (OCD), auditory hallucinations, and migraines. The underlying principle of rTMS involves the modulation of brain activity, particularly in areas that may be overactive or underactive in relation to specific disorders. For instance, individuals suffering from depression often exhibit reduced activity in the left prefrontal cortex, a region associated with mood regulation. The procedure employs magnetic fields to stimulate nerve cells in targeted regions of the brain, effectively altering the brain's biochemistry and influencing the firing patterns of neurons. This stimulation is achieved through the use of a large electromagnetic coil, which is positioned against the scalp over the designated area of the brain. When activated, the coil generates painless electric currents that stimulate the nerve cells, resulting in a tapping or clicking sound and a corresponding tapping sensation on the head. In the initial planning and management session, as described in CPT® Code 90867, the physician identifies the optimal sites for magnet placement, determines the ideal rate of stimulating pulses, and calculates the appropriate dose of magnetic energy required for effective treatment. This mapping process involves adjusting the position of the electromagnetic coil and varying the pulse rate until the motor threshold is established, which is the point at which muscle twitching occurs. Once this threshold is determined, the physician can calculate the optimal dose for subsequent treatments. CPT® Code 90868 is specifically designated for each subsequent delivery and management session where the motor threshold does not require adjustment. During these follow-up sessions, the magnets are reapplied to the head, and the previously established optimal level and duration of stimulation are administered. In cases where re-determination of the motor threshold is necessary, CPT® Code 90869 is utilized. This structured approach ensures that the treatment is tailored to the individual needs of the patient, enhancing the overall effectiveness of rTMS therapy.