Does magical healing in 5e mend broken bones? There's no set system for broken bones in D&D, so DM's call is in full effect here.
There's an "Injuries" option on page 272 in the DMG that can help with this. You'll have to extrapolate a bit from the "Broken Ribs" result, but that can point you in a workable direction.
— Dan Dillon 👥 (@Dan_Dillon_1) January 5, 2020