DeCoud was injured while diving at Packers running back Eddie Lacy on Lacy’s 1-yard touchdown run.
"He’ll have to go through a number of steps before he’ll be cleared to play, with the first one seeing the independent neurologist," Smith said of DeCoud. "Going through the different stages that they have in place."
If DeCoud is unable to go this week, rookie Zeke Motta would step in at safety. Motta played a season-high 55 snaps after replacing DeCoud on Sunday.
Smith also said Antone Smith is "day to day" coming off a knee injury. The running back apparently injured his patella while playing special teams and was to have an MRI.
"We do not think it’s anything significant," the coach said of Antone Smith’s injury. "We anticipate that he’ll be able to join us for practices as the week goes on."
Linebacker Sean Weatherspoon injured his shoulder but finished Sunday’s game.