ICD-10-CM > S00-T88 > T36-T50 > T38 > T38.1 T38.1 Poisoning by, adverse effect of and underdosing of thyroid hormones and substitutes Non-Billable/Non-Specific Codes T38.1XPoisoning by, adverse effect of and underdosing of thyroid hormones and substitutesT38.1X1Poisoning by thyroid hormones and substitutes, accidental (unintentional)T38.1X1A..., initial encounterT38.1X1D..., subsequent encounterT38.1X1S..., sequelaT38.1X2Poisoning by thyroid hormones and substitutes, intentional self-harmT38.1X2A..., initial encounterT38.1X2D..., subsequent encounterT38.1X2S..., sequelaT38.1X3Poisoning by thyroid hormones and substitutes, assaultT38.1X3A..., initial encounterT38.1X3D..., subsequent encounterT38.1X3S..., sequelaT38.1X4Poisoning by thyroid hormones and substitutes, undeterminedT38.1X4A..., initial encounterT38.1X4D..., subsequent encounterT38.1X4S..., sequelaT38.1X5Adverse effect of thyroid hormones and substitutesT38.1X5A..., initial encounterT38.1X5D..., subsequent encounterT38.1X5S..., sequelaT38.1X6Underdosing of thyroid hormones and substitutesT38.1X6A..., initial encounterT38.1X6D..., subsequent encounterT38.1X6S..., sequela