According to the Moto X website, the US Cellular Version is compatible with Sprint's Band 25 and CDMA.
USC (XT1093):
GSM/GPRS/EDGE (850, 900, 1800, 1900 MHz) UMTS/HSPA+ (850, 900, 1800, 1900, 2100 MHz) CDMA (800, 850, 1900 MHz) 4G LTE (2, 4, 5, 12, 17, 25)
https://www.motorola.com/us/motomaker?pid=FLEXR2#moto-x+1-story-specs