The Italian suffered both a compound fracture to his left clavicle and a fracture to his left wrist.
With 10 kilometres remaining in the stage from Oreye to Putte, won by Omega Pharma-Lotto's Andre Greipel, Pozzato was in the lead group when the 29-year-old touched another rider, lost balance and fell into a barrier on the side of the road.
Pozzato was taken to hospital straight away and later taken to a clinic in Brescia where he was operated on by Professor Flavio Terragnoli.
Pozzato was omitted from the Katusha team to ride the Giro d'Italia following a poor spring classics campaign and public critcism by team manager Andrei Tchmil. The Italian's contract ends this year.