According to a report from NBC's Pete Williams, Ginsburg, 85, actually went home after the fall on Wednesday night. She is also a cancer survivor and returned to work less than three weeks after having surgery.
The court's oldest justice fell yesterday, the court said.
It meant that Ms Ginsburg - the most senior justice on the court's liberal wing - was not present for Thursday's investiture of Brett Kavanaugh, whose appointment led to protests following allegations of sexual misconduct.
As the oldest justice, Ms Ginsburg is closely watched for any signs of deteriorating health. Ruth also had a stent placed in her coronary artery in November 2014.
Speaking to reporters on the White House lawn as the news of Ginsburg's fall broke, White House counselor Kellyanne Conway wished Ginsburg a "full and speedy recovery". Over the summer, she admitted that she planned to serve on the Supreme Court for at least five more years.
"Ruth Bader Ginsberg can have my ribs".
Earlier this year, Ginsburg said she meant to stay on the bench for at least five more years. "We can not allow one more Supreme Court justice to be nominated and get through the Senate by this president, or we'll lose that court for over a generation".
But these health scares have anxious Democrats who don't want Ginsburg to step down and allow President Trump to appoint his third Supreme Court justice.
Ginsburg joined the court in 1993.
As the second woman to be seated on the Supreme Court, Ginsburg is considered a trailblazer.