Reyes, who has not played a game for the Mets since May 20, was examined by team physician Dr. Struan Coleman at the Hospital for Special Surgery in New York.
The leadoff hitter had been making progress in his rehabilitation from a slight tear in his hamstring before last Friday, when he did not run the bases in Port St. Lucie, Fla., as scheduled. Mets manager Jerry Manuel called it a setback at the time.
The club's statement said that Reyes will remain in New York for manual physical therapy in an effort to break up the scar tissue and reduce the inflammation.
Doug Miller is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.