Marussia driver Bianchi suffered a serious head injury after his car spun off the track and collided with a recovery vehicle during Sunday's race in Suzuka.
The Frenchman remains in intensive care at Mie General Hospital after undergoing surgery.
Questions have been raised over safety in Formula One following Bianchi's horrific accident, which occured in treacherous conditions that had led to talk of the race start time being changed.
Mosley, however, does not believe that anything more could have been done to prevent the crash.
When asked if the sport was doing all it could to ensure the safety of drivers, he told Sky Sports: "I think it is. I think what happened in Suzuka was very unfortunate, a freak accident, and I can't really fault any of the people involved – the marshals, or the race director, or any of those people. Everything was done as it should have been."
He added: "If somebody wanted to move it [the start time] then there would have been a discussion.
"But it's very difficult to move [a race] in those situations because if you move it two hours earlier then there is no guarantee it won't rain then and you just might move it from a time when it would have been quite safe to start to a time when it was dangerous to start.
"Moving the time wasn't really a solution."
Mosley reiterated that he is not of the opinion that more measures should have been taken to ensure Bianchi's accident did not happen.
"It's an ongoing situation [improving car safety] it is constantly ongoing. But in this particular case, I don't think any of those precautions would have helped because as I understand it he went in under the tractor and that's what caused the danger.
"It remains to be seen, when there is an enquiry, but for anyone to get hurt in modern-day Formula One several things needs to happen at once: here you had difficult conditions, a tractor on the track and for some reason the driver didn't see the yellow flags.
"It would appear he didn't slow down as perhaps he should have done. Why that happened remains to be seen, but it's certainly the case that the yellow flags were deployed, so he should have slowed down and there should have been no risk of him going off, but that doesn't seem to have happened."