Diaby marked his return to the international scene with a winning goal as France secured a 1-0 victory over Finland on Friday.
Deschamps thinks that the Arsenal midfielder will be able to recover in time to start the midweek qualifier.
He said: "There is a risk for all players [to suffer from exhaustion]; for Diaby, perhaps a little more.
"He was getting tired, but I was not able to take him off as I had already made other changes. His athletic performance, particularly in the air, was fundamental to our win.
"We will see how he recovers, but in absolute circumstances, I don't see why he shouldn't be available on Tuesday."
France host Belarus at the Stade de France in their opening home qualifier on the road to the 2014 World Cup in Brazil.