ICD-10-CM > S00-T88 > T36-T50 > T45 > T45.4 > T45.4X > T45.4X4 T45.4X4 Poisoning by iron and its compounds, undetermined Non-Billable/Non-Specific Codes T45.4X4A..., initial encounterT45.4X4D..., subsequent encounterT45.4X4S..., sequela