Yes. No modifications are needed. I use Mastercam, but any cam (FingerCam or Real) can be set up to work. The only thing I have to modify on the code output is to change arc plane from G17 (XY) to G18 (XZ) and remove tool numbers (which I can solve by modifying the post processor but I just haven't)
If I have more than one tool I use G54/G55/etc (again, remove tool change call out)
Aside from just drilling holes or surfacing I never hand code except for macros and parametric formulas ETC, but hand coding for lathe work is really quite simple since the movements are primarily 2 axis only and rarely very complex.
Brian
WOT Designs