Programmable CSF shunt valves, through which CSF flow and pressure can be adjusted by quick and painless transcutaneous reprogramming, have been implanted for more than 15 years in the developed world. Reprogramming these valves relies on rotational magnetic forces, which are applied by neurosurgeons and neurosurgical advanced practice providers. Inadvertent reprogramming (IR) can occur when patients with these valves are exposed to magnetic fields in the environment, which may lead to serious symptoms that may require urgent reprogramming and/or surgery.