The 21-year-old collided with opposition striker Jonathan Walters during the first half of play at the Britannia Stadium, resulting in the youngster being stretchered off the field before being taken to hospital.
"Phil Jones had concussion but he is okay thankfully. He has had a head scan and there are no problems," Moyes told reporters.
"You could see it was fierce clash but completely accidental on both players' behalf. Phil hit the ground with his head and that was probably it - you can tell sometimes when they are not right."