Problem to be solved: to provide a magnetic sensor, a sensor module and a diagnostic apparatus capable of improving detection sensitivity.In accordance with an embodiment, the magnetic sensor includes a first element, a first wiring and a first magnetic portion.The first element includes a first magnetic layer, a first opposed magnetic layer, and a first non-magnetic layer disposed between the first magnetic layer and the first opposing magnetic layer.The direction from the first opposed magnetic layer to the first magnetic layer is in the first direction.The first wiring extends in the second direction crossing the first direction.The first magnetic portion includes a first region and a first opposed region.At least a portion of the first wiring is between the first region and the first opposed region in the first direction.Diagram【課題】検出感度の向上が可能な磁気センサ、センサモジュール及び診断装置を提供する。【解決手段】実施形態によれば、磁気センサは、第１素子、第１配線及び第１磁性部を含む。前記第１素子は、第１磁性層と、第１対向磁性層と、前記第１磁性層と前記第１対向磁性層との間に設けられた第１非磁性層と、を含む。前記第１対向磁性層から前記第１磁性層への方向は第１方向に沿う。前記第１配線は、前記第１方向と交差する第２方向に延びる。前記第１磁性部は第１領域及び前記第１対向領域を含む。前記第１配線の少なくとも一部は、前記第１方向において前記第１領域と前記第１対向領域との間にある。【選択図】図１
