ICD-10-CM > S00-T88 > T36-T50 > T45 > T45.9 > T45.91 T45.91 Poisoning by unspecified primarily systemic and hematological agent, accidental (unintentional) Non-Billable/Non-Specific Applicable To Poisoning by primarily systemic and hematological agent NOS Codes T45.91XA..., initial encounterT45.91XD..., subsequent encounterT45.91XS..., sequela