ICD-10-CM > S00-T88 > T36-T50 > T38 > T38.1 > T38.1X > T38.1X1 T38.1X1 Poisoning by thyroid hormones and substitutes, accidental (unintentional) Non-Billable/Non-Specific Applicable To Poisoning by thyroid hormones and substitutes NOS Codes T38.1X1A..., initial encounterT38.1X1D..., subsequent encounterT38.1X1S..., sequela