The Parramatta playmaker is likely out for the rest of the season if his fears of a ruptured biceps suffered in the late stages of Wednesday's victory at Suncorp Stadium are confirmed.
Moses won a third-straight Origin in his fifth appearance for the Blues, becoming just the third NSW halfback to win a decider in Brisbane.
He finished the game on the sidelines clutching his right arm and indicating he had ruptured the muscle, after earlier breaking the line to score the match-sealing try.
Mitchell Moses dives over for the Blues' second during Origin III. (Darren England/AAP PHOTOS)
If a complete tendon rupture is confirmed it would require surgery and a three-to-four month recovery window.
"I'd spoken to Mitch prior to the series - you get to know them - I do like Mitch and his personality," Blues coach Michael Maguire said.
"It suits the arena; you've got to have a lot of confidence about your own game.
"That's what he brought to the game, and his kick is very handy.
"That's what Origin is about ... and it was really nice to see him break the game open there.
"He was patient; the game was a dog fight and it was going to be a moment that opened the game up and Mitch found that."
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