Chelsea captain Reece James has been given a one-match suspension and fined £90,000 over an incident in the tunnel after his side's loss to Aston Villa in September.
It had previously been reported that the England international confronted referee Jarred Gillett.
The 23-year-old did not feature in the match because of a hamstring injury.
Right-back James picked up a hamstring problem in training last month having struggled with injuries throughout the 2022-23 campaign.
The FA said James had admitted the charge, and the written reasons would be published "at the earliest opportunity".