Toure appeared to kick out at Ricky van Wolfswinkel in the final minutes of Manchester City's frustrating goalless draw at Carrow Road in the Premier League.
Norwich striker van Wolfswinkel reacted angrily, drawing referee Jon Moss' attention to the incident, and Toure must wait to discover if he faces retrospective action from the Football Association.
The standard suspension for violent conduct is three matches, but Pellegrini said after the game: "I didn't see it and I'm not concerned about that."
City have now failed to score in successive games for the first time this season, and Pellegrini believes recent injuries to his strikers are to blame.
Sergio Aguero was missing at Norwich, while Alvaro Negredo has been playing despite a shoulder problem.
Pellegrini said: "The most important thing at this moment is that we are with players who are not 100% fit, that's a problem.
"We have seen that with the strikers - Sergio Aguero, we saw the other day that Alvaro Negredo is not 100%, and Edin Dzeko the same thing.
"Today we tried but it's not easy to score goals. Everyone talks about the amount of goals we score, but it is very difficult to score goals.
"Maybe it was the same mistake that we had when we played against Chelsea, we had a lot of shots but not a lot on target."