Hmm.. it may be a bug, then, I'm pretty sure I took it out (note, insta heal is gone, but fortify heal should be available in every territory). Do you have earlier versions downloaded? Mods seem to bug out if you have both multiple versions downloaded even if you only enable one.
Edit: yeah I just checked by downloading my mod via modbrowser and you can heal. Chances are you haven't deleted earlier versions of my mod, or some other mod is removing the healing. Also I'll provide a link to tech overflow in one sec, it's not on mod browser for some reason. You'll have to download the zip, extract it, and put it in the MODS folder of your usergames>>civ5 folder. Okay it's here
Edit: yeah I just checked by downloading my mod via modbrowser and you can heal. Chances are you haven't deleted earlier versions of my mod, or some other mod is removing the healing. Also I'll provide a link to tech overflow in one sec, it's not on mod browser for some reason. You'll have to download the zip, extract it, and put it in the MODS folder of your usergames>>civ5 folder. Okay it's here