ICD-10-CM > S00-T88 > T36-T50 > T45 > T45.A > T45.AX T45.AX Poisoning by, adverse effect of and underdosing of immune checkpoint inhibitors and immunostimulant drugs Non-Billable/Non-Specific Codes T45.AX1Poisoning by immune checkpoint inhibitors and immunostimulant drugs, accidental (unintentional)T45.AX1A..., initial encounterT45.AX1D..., subsequent encounterT45.AX1S..., sequelaT45.AX2Poisoning by immune checkpoint inhibitors and immunostimulant drugs, intentional self-harmT45.AX2A..., initial encounterT45.AX2D..., subsequent encounterT45.AX2S..., sequelaT45.AX3Poisoning by immune checkpoint inhibitors and immunostimulant drugs, assaultT45.AX3A..., initial encounterT45.AX3D..., subsequent encounterT45.AX3S..., sequelaT45.AX4Poisoning by immune checkpoint inhibitors and immunostimulant drugs, undeterminedT45.AX4A..., initial encounterT45.AX4D..., subsequent encounterT45.AX4S..., sequelaT45.AX5Adverse effect of immune checkpoint inhibitors and immunostimulant drugsT45.AX5A..., initial encounterT45.AX5D..., subsequent encounterT45.AX5S..., sequelaT45.AX6Underdosing of immune checkpoint inhibitors and immunostimulant drugsT45.AX6A..., initial encounterT45.AX6D..., subsequent encounterT45.AX6S..., sequela