The 32-year old fell before the race officially began, appearing to land heavily on his shoulder.
Team Dimension Data have since confirmed that Cavendish sustained concussion and whiplash and was withdrawn as a safety protocol.
Olympics Snowboarding Women's Big Air Final live stream, start time, TV channel
The two best scores of three runs were combined for the final total with Gasser totalling 185.00 and Anderson on 177.25. Heading into her final run, Gasser was sitting in second place, just a few points behind US rider Jamie Anderson.
Team Dimension Data said Wednesday's accident occurred in the neutral zone when the race director's auto slowed suddenly.
Cavendish attempted to ride on but was forced to abandon the race shortly after.
Cavendish will be hoping the crash will have caused only temporary damage after a 2017 season blighted by illness and injury.
Man killed after throwing grenade at U.S. embassy in Montenegro
It also asked USA citizens to " avoid large gatherings and demonstrations, and follow the instructions of local authorities ". The embassy is advising USA citizens to avoid the area, monitor local media for updates and avoid large gatherings.
It says he fell on the shoulder which he broke past year, suffering whiplash and a concussion in the process.
Therefore, the call was made for Cav to stop the race. "We will monitor Mark's condition closely going forward".
Cavendish was briefly examined by medical officials and tried to rejoin the peloton, but he abandoned a short time later and was taken to a local hospital.
Ryder Cup: Tiger Woods will bring 'fire' to Team USA
United States captain captain Jim Furyk named Woods and Steve Stricker as right-hand-men for this year's contest in France. He served as a Ryder Cup vice captain at Hazeltine in 2016 as well as at last year's Presidents Cup alongside Stricker.