"With the time [Lindstrom's missed], he's probably going to need to pitch some, so his activation or going out on rehab is not imminent," manager Buck Showalter said.
Although Lindstrom's right middle finger is pain free, the doctors have advised him to remain cautious to make sure the partial ligament tear can completely heal.
Lindstrom has been able to pick up the ball and squeeze it, but he hasn't started pitching again and hopes to do so within the next couple of days.
"I'm champing at the bit a little bit trying to convince those guys that I want to get throwing again," Lindstrom said, "but I've got to be careful."
The right-hander added that he is on a "waiting period," but he has been doing other workouts to keep his arm strength up to par.
The tentative plan is for Lindstrom to throw this week in Baltimore, and if that goes well, head to Sarasota, Fla., for a rehab assignment.
Lindstrom said he hopes to need only "a couple" rehab outings "just to get my command down and everything like that, but we'll see," before returning to the Orioles' bullpen.