"Obviously, I am very disappointed that I will not be able to play this week, as I am playing well and love the courses at Sea Island," Hickok said. "Nonetheless, I look forward to returning to the RSM Classic next year."
Norlander, 33, tied for second at the RSM Classic in 2016 - his best finish in 80 career PGA Tour starts.
"While I'm disappointed to withdraw from a tournament where I've had success at in the past, I'm grateful I can drive home to Augusta and have next week to get healthy and be ready to compete again," Norlander said.
Twenty players have now been forced to miss time on Tour since June due to COVID-19.