T45.1X4 - Poisoning by antineoplastic and immunosuppressive drugs, undetermined T45.1 - Poisoning by, adverse effect of and underdosing of antineoplastic and immunosuppressive drugs T45.1X - Poisoning by, adverse effect of and underdosing of antineoplastic and immunosuppressive drugs T45.1X4 - Poisoning by antineoplastic and immunosuppressive drugs, undetermined