Andrews reviewed Lidge's MRI results taken Thursday, and he and Ciccotti made the decision for treatment with a cortisone shot -- the second such shot in his elbow in two months.
Lidge went on the 15-day disabled list Saturday, but is eligible to come off May 25.
"It's a relief," Lidge said. "I'm fortunate that it's just the joint cleared up and they've got ways to treat it. Hopefully as soon as I get off the DL, I'll be able to throw in games."
Lidge had surgery on the elbow in the offseason and spent the first month of the season on the disabled list. He was activated for four games before he felt the elbow stiffen up while playing catch last Monday in Colorado.
He got an MRI in Philadelphia on Thursday, which showed no loose bodies or damaged ligaments.
"They said it is possible that this thing could happen after surgery, that setbacks are possible," Lidge said. "They really said you shouldn't have to deal with any more after this -- it's kind of the last stage to getting to 100 percent. It happened, and hopefully now I'll be able to bounce back and get back up and get into midseason form."
Lidge will wait until the shot is absorbed for two days, and then he is expected to begin throwing. He said that he and Ciccotti will discuss possibly using a joint lubrication injection if it's necessary down the road.
"You don't have to miss any time, you can kind of get that as you're going," Lidge said of the lubrication injection. "I haven't done that yet, but it's something we can do. It really can kick-start the joint and get it back to normal real fast."
Right-hander Jose Contreras will continue to serve as the club's closer in Lidge's absence.