Z77.0 - Contact with and (suspected) exposure to hazardous, chiefly nonmedicinal, chemicals
Z77.02 - Contact with and (suspected) exposure to hazardous aromatic compounds
Z77.020 - Contact with and (suspected) exposure to aromatic amines
Z77.021 - Contact with and (suspected) exposure to benzene
Z77.028 - Contact with and (suspected) exposure to other hazardous aromatic compounds