Category "code-8"

Why did Nia transfer and absorb Conner's mother's powers in the scene at the hospital?

In the movie, Code 8, Connor's mother was hospitalized after fainting at home. The doctor explained to Connor that a brain tumor is causing her to lose control

What does the title of "Code 8" refer to?

There is a movie called Code 8 (2019). I watched it thoroughly and I can not understand where the movie's name comes from. What does "Code 8" refer to?