Next week, Giambi will undergo arthroscopic surgery to repair the small ligament tear in the wrist, giving him plenty of time to rehab and recover in time for Spring Training.
"I should be fine," Giambi said.
The injury first popped up on the team's West Coast swing in late August, prompting Giambi to get the first of three cortisone injections.
During the Sept. 8-11 series in Baltimore, Giambi saw Dr. Melvin Rosenwasser, a hand specialist, for a second time, receiving another shot. On Sept. 21, the Yankees announced that surgery might be an option during the offseason.
Following New York's season-ending loss to the Tigers on Saturday, Giambi confirmed that he would undergo the procedure.
"I think we were going to have to do it from the beginning," Giambi said. "They'll just go in there and see what else they have to do."
After hitting .311 with six homers and 25 RBIs in August, Giambi batted just .192 in September, homering just once while driving in seven runs. He went 1-for-8 in the first three games of the Division Series, his only hit coming in Game 1, when he hit a two-run homer.
Giambi did not play in Saturday's Game 4, as the Yankees were eliminated with an 8-3 loss to the Tigers. Since coming to New York in 2002, Giambi has seen his team knocked out of the postseason in the first round in three of the five years.
"We just haven't put it together," Giambi said. "All those years that those teams won, that's what makes what they did that special. It's not as easy as everybody thinks. It's not guaranteed."
Giambi has two years remaining on the seven-year, $120-million contract he signed following the 2001 season.
"That's definitely what you come here for," Giambi said of winning a title. "Hopefully we'll get one."
Mark Feinsand is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.