He has been on the disabled list since July with a sprained ulnar collateral ligament and a strained flexor pronator in his left elbow. He opted to rehab the elbow and avoid surgery, which would give him a chance to pitch in Spring Training.
Moyer recently has been throwing from 90 feet, including Saturday afternoon at Citizens Bank Park. The next step is throwing from 120 feet.
If he continues to progress he will throw from a mound in a few weeks.
"I hope to have an idea in the next month of where I am," Moyer said. "I would hope. ... It's a day-to-day thing. So far it's encouraging."
Moyer is a free agent following the season. The Phillies already have more than $140 million committed to the 2011 payroll, and with the uncertainty surrounding his elbow, it is unlikely Moyer will be back unless he would accept a heavily incentive-laden contract.