ICD-10-CM > S00-T88 > T36-T50 > T45 > T45.A > T45.AX > T45.AX1 T45.AX1 Poisoning by immune checkpoint inhibitors and immunostimulant drugs, accidental (unintentional) Non-Billable/Non-Specific Applicable To Poisoning by immune checkpoint inhibitors and immunosuppressive drugs NOS Codes T45.AX1A..., initial encounterT45.AX1D..., subsequent encounterT45.AX1S..., sequela