When working in the service industry or with the public in general, a "code white" is a call sign designating a whiny, hand-wringing white person who requires an elevated amount of attention and/or help. Usually elderly, well-off, or both, but always white. Or, a white busy-body who is a burden to everyone they come into contact with.
"Security to front desk. It's 2:23am, and I've got a woman here asking me to find out who parked in front of her hotel room. She wants us to call them and ask them to 'please move.' Looks like a code white, over."