CDU leader Friedrich Merz broke his collarbone on vacation in Bavaria on Thursday and therefore had to have an operation on Friday morning.
This was announced by a spokesman for Merz of the German Press Agency in Berlin.
First, the "Bild" newspaper reported on the incident.
The operation was successful, it said.
Merz, who is also chairman of the Union faction in the Bundestag, is on the road to recovery.
According to reports, Merz did not have to be taken to the hospital with blue lights.