ICD-10-CM > S00-T88 > T36-T50 > T45 > T45.1 > T45.1X > T45.1X4 T45.1X4 Poisoning by antineoplastic and immunosuppressive drugs, undetermined Non-Billable/Non-Specific Codes T45.1X4A..., initial encounterT45.1X4D..., subsequent encounterT45.1X4S..., sequela