The 20-year-old joined Birmingham on loan on September 21 and made an instant impact at the club.
Lingard has scored six goals in seven games for the Championship side.
The England U21 international will now be available to feature in a further eight games for Birmingham.
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Since Guus Hiddink arrived at the helm, Chelsea have improved considerably after a tricky start to the campaign.
Newcastle United are staring down the barrel of relegation to the Championship for the second time in the past eight years.