West Brom defender Gabriel Tamas has been charged with violent conduct over the clash which left Norwich's James Vaughan needing hospital treatment.
The Football Association took action over the incident which occurred late in the Baggies' 1-0 Barclays Premier League win at Carrow Road on Sunday.
Tamas was given until 6pm tomorrow to respond to the charge, which would carry an automatic three-match ban if accepted.
The 27-year-old Romanian caught Vaughan with an elbow to the face during a stoppage-time corner, something Norwich boss Paul Lambert insisted should have brought a penalty.
He added on Sunday: "James has gone to see the plastic surgeon. It's a bad one. It has gone straight through the lip and they can't just stitch it up."
Former Everton striker Vaughan later wrote on Twitter: "Back home! plastic surgeon sorted me out! think i will have 2 bite my lip over the 'incident' o wait already done that!"
West Brom manager Roy Hodgson defended Tamas, saying he was "100% convinced it is unintentional".
He added: "It does not make it any better for Vaughan whether you have got caught intentionally or accidentally - it is still a painful blow."