Vernon (Achilles) was placed on injured reserve Tuesday.
Vernon suffered a ruptured Achilles during Sunday's 24-22 win over the Steelers, Tom Withers of the Associated Press reports.
Vernon (ankle) will have MRI on ankle according to coach Kevin Stefanski, Scott Petrak of the Elyria Chronicle-Telegram reports.
Vernon is questionable to return to Sunday's game against the Steelers with an ankle injury, Dale Lolley of DKPittsburghSports.com reports.
Vernon had five tackles, one sack and two quarterback hits in Sunday's 23-16 loss to the Jets.
Vernon had three tackles, two sacks and one pass defensed in Monday's 47-42 loss to Baltimore.
Vernon recorded five tackles, three sacks, one pass defensed and was credited with a safety in Sunday's 22-17 win over the Eagles.
Vernon had four tackles and two sacks in Sunday's 16-6 loss to the Raiders.
Vernon (groin) is active Week 6 against the Steelers.
Vernon (groin) is questionable for Sunday's game at Pittsburgh, Andrew Gribble of the Browns' official site reports.