Hubbard underwent an offseason procedure to address an ankle injury that he dealt with last season, Ben Baby of ESPN reports.
Hubbard recorded 58 tackles (38 solo), 6.0 sacks and two fumble recoveries across 15 regular-season appearances in 2023.
Hubbard (ankle) has no injury designation ahead of Sunday's game against the Steelers.
Hubbard (ankle) is listed as out for Thursday's game at Baltimore.
Hubbard (ankle) is out for Sunday's game versus Houston, Geoff Hobson of the Bengals' official site reports.
Hubbard registered six tackles (four solo) including a sack in Sunday's 31-17 win over the 49ers.
Hubbard registered eight tackles (three solo) in Sunday's 24-3 loss to the Browns.
Hubbard (calf) was a full participant at practice Thursday, Charlie Goldsmith of The Cincinnati Enquirer reports.
Hubbard (calf) has been ruled inactive ahead of Monday's game versus the Bengals, Paul Dehner Jr. of The Athletic reports.
Hubbard (calf) was a limited participant in Thursday's practice, Andrew Gillis of The Cleveland Plain Dealer reports.