Can Blue Cross Blue Shield deny coverage if you use marijuana?

They absolutely will deny you for it. Was my only "yes" checked box. I am a perfectly healthy 30 year old with no health problems or prescriptions whatsoever. I use MMJ for mild insomnia & physical relaxation after exercise- was my only "yes" box and resulted in automatic denial. MMJ reduces people's other health care expenses but insurance companies like Anthem still treat you like a crack addict.