The Fever Code is a 2016 young adult dystopian science fiction novel written by American author James Dashner and published on September 27, 2016 by Delacorte Press. It is the second prequel book in The Maze Runner series and the fifth and final installment overall. The book is chronologically set in between the events of The Kill Order and The Maze Runner.

Is it true that is the fever code part of the maze runner series?
yes