The 19-year-old left-back joined the high-flying Skrill Premier club on a youth loan in the summer and was due to remain until January.
He made a total of 19 league starts during the stint, the latest of which came in Saturday's 1-0 victory at Hereford.
But Blues boss Lee Clark has been forced to recall the talented youngster after Mitch Hancox sustained a knee injury in the latter stages of Birmingham's 2-2 draw against Middlesbrough in the Championship on Saturday.
Hancox was replaced in injury time by Kyle Bartley, who duly headed home a last-gasp leveller, and is currently awaiting news on the extent of the problem.
It is the second time Bell has been recalled to St Andrew's this season, with the teenager returning in late September only to be allowed to go back to Nuneaton a week later.
Meanwhile, teenage winger Demarai Gray has signed his first professional contract at Birmingham.
The 17-year-old is the latest Academy graduate at St Andrew's to be handed pro terms having progressed through the ranks at the Midlands outfit, signing a two-and-a-half-year deal.
Birmingham-born Gray has been with the club since the age of seven and made his first-team bow as a late substitute in a 4-0 Championship victory over Millwall in October.
He was then introduced as a first-half substitute at Derby before making his full Blues debut in last month's 1-0 home defeat to Charlton.
Gray has so far made a total of five appearances for Birmingham this term.