A medical system (110) is proposed, comprising at least one medical device (112) for carrying out at least one medical function. The medical device (112) is adapted to interact with at least one medical consumable item (122) for carrying out the medical function. The medical device (112) comprises at least one code reader (142) for reading out at least one piece of information of an optical code (138) located on the medical consumable item (122). The code reader (142) comprises at least one image sensor (156) comprising a plurality of sensors (188). The code reader (142) further comprises at least one light-optical fiber plate (170) disposed in such a way that an image of the optical code (138) is sent to the image sensor (156).