In every round the bye team played against the bye team of the other zone: Team from Zone A vs Team from Zone B and Team from Zone C vs Team from Zone D.
Note: The team in the first line plays at home the second leg.
Clausura 2004
First stage
In every round the bye team played against the bye team of the other zone: Team from Zone A vs Team from Zone B and Team from Zone C vs Team from Zone D.
CAI remained in the Torneo Argentino A after a 1-1 aggregate tie by virtue of a "sports advantage". In case of a tie in goals, the team from the Torneo Argentino A gets to stay in it.