Hall was hurt on the Steelers' final drive of the first half and was on crutches after the game.
He signed a $39-million contract extension in September.
Cornerback Adam Jones missed his second straight game Sunday with a pulled right hamstring.
Hall was a key cog in the surprising Bengals' stingy defense this season.
Cincinnati (6-3) had won five straight before falling 24-17 to the rival Steelers on Sunday.
Information from The Associated Press contributed to this report.