Menem called all the charges "totally unfounded" as he left court Monday.
As a senator, Menem has parliamentary immunity that can only be removed by the Senate, where he has provided a reliable vote for President Cristina Fernandez. But he dismissed the idea that she will protect him.
"I don't expect the government to support me. Justice is acting in agreement with constitutional principles," Menem told reporters.
For now, Menem remains free despite the seven-year sentence he received in June after being convicted of smuggling weapons while he was president to Croatia and Ecuador when those countries were subject to international embargos.
Menem has been accused in a separate case with responsibility for the explosion at a weapons factory that destroyed much of the town of Rio Tercero in 1995, killing seven people and injuring dozens. Prosecutors believe the blast was intended to eliminate evidence of arms trafficking.