Systems, devices, and techniques are disclosed for a modular medical lead system. The modular medical lead system may comprise an elongate lead body module including a plurality of coiled electrical conductors extending from a first end to a second end of the elongate lead body module, and a conductor hub adjacent the first end of the elongate lead body module. The plurality of conductors are electrically isolated from one another and mechanically coupled to the conductor hub such that the plurality of conductors are in a fixed arrangement relative one another. A first end of the conductor hub is nearer the first end of the elongate lead body module than a second end of the conductor hub.