The Frenchman had reported a stomach complaint after scaling a peak during their training base in the French Alps, A statement on the French Football Federation's website confirmed the 25-year-old has been ruled out of the tournament.
The statement read:
Following the intestinal problem Lassana Diarra contracted on the glacier at Tignes, medical examinations discovered an unforeseen illness that necessitates rest for an undeterminate period.
As a result, Lassana Diarra is out of the 2010
World Cup in South Africa. For the moment, the staff have not called up another player.