T45.AX1S Poisoning by immune checkpoint inhibitors and immunostimulant drugs, accidental (unintentional), sequela

T45.AX1S is a billable/specific and POA-exempt diagnosis code from the 2026 ICD-10-CM used to classify the following condition: Poisoning by immune checkpoint inhibitors and immunostimulant drugs, accidental (unintentional), sequela.