The 31-year-old has recently returned from a lengthy six-month spell out after a groin surgery but missed Saturday's 2-0 win at West Brom due to an infected ankle.
According to The Guardian newspaper, the England international was seen leaving a Liverpool hospital on crutches with his right leg in a cast - a sight that will bring worry to both Kenny Daglish and Fabio Capello.
Gerrard is believed to have fluid drained from his infected ankle and Liverpool are crossing their fingers the procedure will help ensure a speedy recovery for their skipper.
Meanwhile, Dalglish has played down the severity of Gerrard's latest injury setback
"Steven has got an infection in his ankle," the Reds boss said after the game at the Hawthorns. "He was in our minds for the [West Brom] game and it just flared up.
"We will be more accurate next week [in terms of a prognosis]. It has nothing to do with any injures before. It's an infection. I suppose it's like having an abscess in your mouth."
Gerrard looks set to miss the Reds' next league game at home to Swansea as well as England's upcoming friendlies with Spain and Sweden.