FIFA's disciplinary committee also ordered extra crowd control measures outside the stadium for next month's game at home to neighbours Burkina Faso, football's world governing body said in a statement on Wednesday.
However, FIFA stopped short of imposing a home ban on the West Africans.
"For the World Cup qualifier against Burkina Faso in Abidjan on 5 September 2009, the capacity of the stadium will be restricted to 20,000 spectators," said FIFA.
"Externally, a mandatory traffic control cordon will be established at least one kilometre away from the stadium itself, and a spectator control cordon will be established between 100 and 200 metres from the stadium in order to filter the access of spectators."
"The total capacity of the stadium (34,600) will only be allowed in subsequent matches if the above-mentioned measures are applied for each match.
"All future matches will not be allowed to kick off until the designated FIFA Security Officer is satisfied with all aspects of stadium safety and security."
"The decision also mentioned that, in the event of any similar incidents, FIFA would have no choice but to impose more severe sanctions on the Ivorian Football Association."
