Ten people are still in Christchurch Hospital after the bus crash near Arthur's Pass on New Year's Eve.
A Swiss national who had been in a critical condition yesterday was now stable and a Chinese national had been discharged yesterday, said a hospital spokeswoman.
Another Swiss national and eight Chinese nationals were in a stable condition and it was possible another Chinese national would be discharged today, although the spokeswoman could not yet confirm that.
Sixteen people were injured on New Year's Eve when a bus and a van collided in the Otira Gorge in the alpine South Island.
Some patients were taken to Grey Base Hospital on the West Coast and later transferred to Christchurch.