The Bears placed Billings (pectoral) on injured reserve Thursday, Scott Bair of Marquee Sports Network reports.
Billings is set to undergo surgery to address a pectoral injury he sustained Sunday at Arizona and is expected to be out for a prolonged period, Patrick Finley of the Chicago Sun-Times reports.
Billings (chest) has been ruled out for the remainder of Sunday's contest against the Cardinals, Brad Biggs of the Chicago Tribune reports.
Billings (knee) is active for Sunday's game against the Rams.
Billings recorded 27 tackles over 17 games in his first season with the Bears and will likely continue in a part-time role in 2024.
Billings notched two tackles in the Bears' 17-9 loss to the Packers on Sunday.
The Bears signed Billings to a two-year, $8.5 million contract extension Thursday, Adam Schefter of ESPN reports.
Billings (lower leg) is listed as active Saturday at Pittsburgh.
Billings (lower leg) is listed as questionable for Saturday's game against the Steelers.
Billings (lower leg) has been ruled inactive ahead of Sunday's game versus New England.