Kouzmanoff, 32, is already on the 15-day disabled list and has a history of back trouble dating back almost 10 years.
Kouzmanoff will fly to California with the team later this week to get a second opinion. He left last Tuesday's game against the Oakland Athletics with back stiffness and received an epidural injection last week to help with the pain.
"It's bad timing," said Kouzmanoff, via ESPN.com. "It was fun. I miss these guys. I miss being in the lineup every day."
Kouzmanoff is batting .362 with two home runs and 10 RBI this season in 13 games at third baseman filling in for Adrian Beltre. SI.COM STAFF: MLB Power Rankings: Braves take over top spot, AL West pair rises