The league also pushed the Ravens' Thursday game against the Dallas Cowboys in Week 13 to Monday.
The matchup between Baltimore and Dallas is set for 5 p.m. ET, and it'll be followed by San Francisco 49ers-Buffalo Bills as part of a Monday night doubleheader.
Baltimore is battling a COVID-19 outbreak that's forced the team to place more than 10 players on the reserve/COVID-19 list this week, including quarterback Lamar Jackson. The Ravens placed Jackson, fullback Patrick Ricard, defensive tackle Justin Madubuike, and long snapper Morgan Cox on their COVID-19 list on Friday.
Jackson received his positive test from Thursday's round of testing and won't be available to face the Steelers on Tuesday, according to NFL Network's Tom Pelissero.
This is the second time the NFL has moved the AFC North matchup, which was initially scheduled to take place on Thanksgiving Day.
Steelers head coach Mike Tomlin canceled Friday's practice. Pittsburgh is scheduled to face the Washington Football Team on Sunday in Week 13.