ICD-10-CM > S00-T88 > T36-T50 > T38 > T38.1 > T38.1X > T38.1X1 > T38.1X1A T38.1X1A Poisoning by thyroid hormones and substitutes, accidental (unintentional), initial encounter Billable/Specific Copy Code Copy Description Applicable To Poisoning by thyroid hormones and substitutes NOS