England prop Joe Marler will face a misconduct hearing on April 5 over his slur against Wales prop Samson Lee in the Six Nations match.
Governing body World Rugby announced a three-man independent judicial committee on Monday, after both the Rugby Football Union and Six Nations had taken no further action.
Marler was heard calling Lee "Gypsy boy" in England's 25-21 win over Wales on March 12.
Marler apologized to Lee at halftime and was reprimanded by England head coach Eddie Jones, but the decision not to sanction him caused an outcry and he now faces a retrospective ban.
Marker came off the bench in the 31-21 victory over France in Paris that secured England's first Grand Slam since 2003, and returned to club action with Harlequins on Saturday.