Klopp was facing the press ahead of the Champions League qualifier, first leg, in Hoffenheim on Tuesday night.
"Nothing has changed in last few days. Not on this side or on the other side.
"He's not available for us at the moment. He cannot play for Liverpool at this moment [back injury]. As you can imagine that's quite a blow. We've known this a few days. Like we have to prepare without Adam Lallana and Daniel Sturridge."
When asked again about Coutinho, Klopp sought to draw a line under the matter.
"I have nothing to say on that. I am here, but I work with the players I have. I don't think of the players I don't have. I've said everything I will say about it."