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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Summer 2016 is set to be a very exciting time for football fans, as this is when the long awaited Euro 2016 tournament kicks off.
Since Guus Hiddink arrived at the helm, Chelsea have improved considerably after a tricky start to the campaign.