The D-backs right-handed reliever said on Monday that he needs Tommy John surgery on his injured right elbow.
"I got hurt in my elbow, I had an MRI on Friday and that showed I have to get Tommy John surgery," he said.
Gutierrez, who has been on the disabled list since May 25 with a shoulder issue, was shut down twice as he rehabbed back to the big leagues before he injured his elbow in a simulated game last Tuesday at Salt River Fields.
"When I started my rehab program, I started to feel it in my elbow, so I told them, 'I'm not ready to come back,'" Gutierrez said.
In that simulated game, he was supposed to throw 35 pitches, but could only throw 15.
He said the team then scheduled an MRI which showed that he needed the surgery, which requires a recovery time of 8-12 months.
"It's hard," he said. "It's frustrating, but what I have to do is keep working hard and get stronger for next year to try to get back."
The 28-year-old had a 5.40 ERA in 20 appearances this year.