"We want to make sure he's able to see a doctor to see if there's anything else they need to do with that," Astros manager Brad Mills said.
Cordero's injury has been diagnosed as right foot sesamoiditis, the same injury former Astros infielder Jeff Keppinger had in September 2010. He eventually required surgery to remove the sesamoid bone.
Mills said there hasn't been a discussion about whether Cordero will need to have surgery, which would end his season, but he said next week's trip to the doctor will help clarify the next steps.
"Hopefully something like that really isn't necessary," Mills said.
Cordero has pitched in six games for Houston since he was acquired from the Blue Jays in a 10-player deal on July 20. He has allowed 11 runs and 13 hits in five innings.