He has received an automatic one-match ban which cannot be appealed but Uefa's disciplinary panel could extend it depending on the contents of the report sent to them.
It is understood that if the ban was extended, any appeal from Juventus would have to be heard before match day three, when Ronaldo had hoped to face his old club Manchester United at Old Trafford.
Ronaldo left the pitch in tears after German referee Felix Brych decided to send him off.
"You can't do that!"— Football on BT Sport (@btsportfootball) September 19, 2018
"I think he's got room to appeal.."
A much clearer angle of Cristiano Ronaldo's red card, and it's still dividing opinion... pic.twitter.com/U034bcKuq0
Brych was alerted to the incident by one of the additional officials stationed behind the goal Juventus were attacking.
Juventus coach Massimiliano Allegri felt the video assistant referee (VAR) technology could have helped.
VAR was used largely successfully at this summer's World Cup but is not yet in use in the Champions League.
"Going down to 10 men in the Champions League for an incident like that is disappointing," Allegri said.
"We risked losing tonight with this and we'll miss him for the next games too."
Ronaldo will definitely miss Juve's home match against Young Boys on October 2.
It would seem unlikely that his ban would be extended, with Article 15 of UEFA's regulations stating that bans of more than one game are for offences such as abusive language towards a match official, serious assault or for receiving a caution or red card on purpose.
Two penalties from Miralem Pjanic gave Juventus the victory in Valencia.