Maddison had his pulse checked by Leicester's medical staff when he went down unchallenged during their Europa Conference League win over Randers.
The Foxes picked up a 4-1 victory over their Danish opponents, with goals from Wilfred Ndidi, Harvey Barnes, Patson Daka and Kieran Dewsbury-Hall ensuring they ran out comfortable winners at the King Power.
After starting on the bench, Maddison entered the fray with 25 minutes remaining when he replaced fellow midfielder Ndidi.
Yet Maddison was unable to complete the game himself, as his off-the-ball incident forced him off late on.
Leicester's medical staff carried out some quick routine checks, including taking his pulse, before he was able to walk off the field with their assistance and head straight down the tunnel.
"I've spoken to him and he felt a bit funny in the game, so we didn't want to take any risks with that," Rodgers said.
"We just took him off and he went to see the doctors.
"He just felt unwell, so we took him off. It's something they will do (checking his pulse).
"He was sat up (when Rodgers spoke to him). He felt a little bit faint but he was okay."
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