ICD-10-CM > S00-T88 > T51-T65 > T56 > T56.0 > T56.0X > T56.0X4 T56.0X4 Toxic effect of lead and its compounds, undetermined Non-Billable/Non-Specific Codes T56.0X4A..., initial encounterT56.0X4D..., subsequent encounterT56.0X4S..., sequela