Should i replace my helmet

I have a 1 year old Smith MIPS helmet. I crashed on a 2 foot high box going relatively slow. I slipped and fell sideways landing pretty hard directly on the back of my head on icy snow. It hurt. I think i had a minor concussion so I’m going through concussion protocol to be safe. No visible damage to the helmet. No cracks or anything. Wondering if my helmet needs replaced after that?