"The Senate Select Committee on Intelligence has accepted Mr. Cohen’s request for postponement of tomorrow’s hearing due to post surgery medical needs," Lanny Davis said in a statement to media. "A future date will be announced by the Committee."
Cohen’s surgery was on his shoulder, according to a person familiar with the matter.
Cohen, who is set to go to prison on March 6, had been subpoenaed to appear before the Senate committee, one of two main congressional panels investigating whether Russia interfered in the U.S. 2016 presidential election.
Trump has said repeatedly there was no collusion between his campaign and Russia and has called Special Counsel Robert Mueller’s investigation a witch hunt. Moscow denies meddling in the election, despite U.S. intelligence agencies’ conclusion of Russian interference.