Scans have confirmed that James Faulkner suffered a side strain during Australia's 112-run win over England in Sunday's final of the Carlton Mid ODI Series at the WACA.
The all-rounder underwent scans in Melbourne late yesterday on his injured right side.
Cricket Australia Physiotherapist Alex Kountouris said: "Scans on James Faulkner's injured side have confirmed a moderate grade abdominal muscle strain which is consistent with a 'typical' fast-bowing side strain injury.
"He will receive intensive treatment for the next two weeks before we can determine when he can return to batting and bowling."
He will travel with Australia's ICC Cricket World Cup squad to Adelaide on Friday to continue his treatment with team medical staff.