The England international is set to miss Real Madrid's next two league games against Celta Vigo and Osasuna due to the red card that he was handed in the 2-2 draw with Valencia last weekend.
Bellingham was shown a straight red in the closing stages of the contest, having protested to referee Gil Manzano over what he believed should have been a winning goal for Los Blancos.
The ex-Birmingham City youngster headed a cross from Brahim Diaz into the back of the net at Mestalla, but the referee had clearly blown the full-time whistle before the ball went in.
There were furious protests from Real Madrid in the period that followed, and the Spanish Football Federation (RFEF) ruled that Bellingham showed «contempt or disregard» towards Manzano.
Real Madrid appealed the decision, but it was revealed on Friday afternoon that the Appeals Committee of the Spanish Football Federation (RFEF) had ruled that the initial decision should stand.
According to journalist Carlos Rodriguez, Los Blancos are now planning to lodge an appeal with the Sports Administrative Court (CSD) in the hope that the decision can still be overturned.
However, Real Madrid are due to face Celta on Sunday, so it remains to be seen whether a decision is made in time for the midfielder to potentially be available this weekend.
After Wednesday's 1-1 draw with RB Leipzig in the Champions League, which saw Los Blancos progress to the quarter-finals with a 2-1 aggregate success, Bellingham told Movistar: «It's difficult to talk about, because there's appeals going on.
»All I can say is
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