Implantable electrode line electrically stimulating and/or sensing bodily tissue, including a distal end portion having at least one electrode pole and/or sensor, a proximal end portion having at least one device connection contact, and a line body containing an electrical feed line connecting the electrode pole and/or sensor to the device connection contact. The distal end portion, proximal end portion, and line body are separate modules. The distal end portion module has, at its proximal end, at least one first connection contact. The proximal end portion module has, at its distal end, at least one second connection contact. The line body module has, at its distal end, a third connection contact for detachable engagement with the first connection contact and, at its proximal end, a fourth connection contact for detachable engagement with the second connection contact. The modules form the electrode line in the connected state of the connection contacts.