The two European giants played out a thrilling Group C encounter, with Chelsea rescuing a draw in the closing stages to remain top of the table after three rounds of fixtures.
However, match was marred by racist chanting from the away fans at Stamford Bridge, and UEFA have confirmed they have opened a disciplinary case over “racist behaviour (monkey chants)” during the game.
European football’s governing body will hold a disciplinary discussion on November 19, which comes after the October 31 return leg in Italy.
Chelsea lead Group C by two points, with Roma sitting second, three points clear of Atletico Madrid, leaving the race for the top-two qualifying spots very much open with three games remaining.