ICD-10-CM > S00-T88 > T36-T50 > T45 > T45.9 > T45.96 T45.96 Underdosing of unspecified primarily systemic and hematological agent Non-Billable/Non-Specific Codes T45.96XA..., initial encounterT45.96XD..., subsequent encounterT45.96XS..., sequela