I figured as much. For moss to have died, the entire pot must have been dry for an extended length of time. The green growing point means there is a slight chance that the Ceph can recover from whatever energy it's got in its rhizome.
When plants undergo drought shock, their roots are injured. The greatest threat, if your plant hasn't died, is that the injuries allow root pathogens into the plant. The best protocol is to fungicide at this point. But I can tell you as a professional horticulturist that the appropriate fungicides would cost more than your plant.
For now I recommend that you not overreact by psychotically overwatering the plant. Some people are tempted to do that after a plant dries out, but in reality the damage has already been done. The best procedure would be to just keep an average, stable soil moisture level. Don't let any water stagnate around this plant or it will allow diseases to develop. Do not enclose it in an overly humid environment either for the exact same reason. Basically, you want to give it a stay in optimal, plant-hospital conditions for a while. Don't move it around or stress it in any way.
The plant will want to rebuild its lost roots, and in a week or so, begin some dilute foliar feeding from a spray bottle.