Courtois was substituted after 23 minutes at Stamford Bridge on Sunday, with blood dripping from his ear after a collision with Gunners forward Alexis Sanchez.
Having been treated on the field of play, he remained in action for a further 13 minutes after the incident, before it was decided that he could not continue, with Petr Cech taking his place for his first Premier League action of the season.
The Blues have come under criticism since the incident, with medical professionals claiming that the club had broken new guidelines set in place in the event of a concussion. Many have suggested that team doctors should be prevented from assessing their own players, with increased pressure on them to ensure the club have the strongest squad out on the field, but FIFA are prepared to back Chelsea over their treatment of Courtois, with medical chief Michel D’Hooghe insisting that Eva Carneiro fulfilled correct procedure on the day.
Speaking at the Leaders Sport Business Summit, held at the Blues Stamford Bridge stadium, D’Hooghe said: "In the case of Chelsea, I think sincerely that the team doctor did a correct examination.
"She came to a conclusion that he could go on, but she kept an eye on him and from the moment he didn't feel well - and that can happen in the case of concussion - they took again the right decision to take him off."
It took just 13 minutes for Courtois to leave the field of play after being cleared for action, and the treatment follows the guidelines set out - with the club claiming that he was in no immediate danger. The incident is the latest in a long line of controversy surround head injuries, with Tottenham coming under scrutiny last season over their treatment of goalkeeper Hugo Lloris after a blow to his head.