ICD-10-CM > S00-T88 > T36-T50 > T37 > T37.0 > T37.0X > T37.0X4 T37.0X4 Poisoning by sulfonamides, undetermined Non-Billable/Non-Specific Codes T37.0X4A..., initial encounterT37.0X4D..., subsequent encounterT37.0X4S..., sequela