"I can't tell you how long he's gonna be shut down," manager Joe Girardi said. "We're going to talk to Dr. [Chris] Ahmad and Dr. [James] Andrews over the next couple hours, and we're going to figure out what's next."
New York was hoping that Sabathia -- who made his last Major League start on May 10 and had a 3 2/3-inning rehab start for Double-A Trenton on Wednesday -- would be able to help the Yanks make a playoff push.
"We were hopeful that the swelling would stay away and he would be in our rotation very soon," Girardi said.
With no timetable for Sabathia's return, would the Yankees think about trading for another starting pitcher?
"I don't think our organization's thinking ever changes," Girardi said. "I think they're always looking to better our team, no matter what. When someone's injured, you can never count 100 percent that they're coming back."
Alex M. Smith is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.