Rebalancer is a fairly large mod, so there's bound to be some compatibility issues with other gameplay mods. Luckily, Rebalancer's modularity allows you to pick and choose what parts to use, so you're free to mix in other gameplay mods.
General rule of thumb: if you think they edit the same thing, they probably do.
The only oddball modules that have extra edits to make sure things work properly are radiation and quicker stims, which both edit the medic perk.
You may also be interested in Personal Patch Emporium by lunarionsilver which includes a handful of patches for Rebalancer and other mods.