ICD-10-CM > S00-T88 > T36-T50 > T50 > T50.1 > T50.1X > T50.1X4 T50.1X4 Poisoning by loop [high-ceiling] diuretics, undetermined Non-Billable/Non-Specific Codes T50.1X4A..., initial encounterT50.1X4D..., subsequent encounterT50.1X4S..., sequela