Back to ICD-10 library
ICD-10-CM · FY 2026 APRIL UPDATE

T38.2

Poisoning by, adverse effect of and underdosing of antithyroid drugs

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027
SourceCMS ICD-10-CM order file
ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODEDESCRIPTIONTYPE
T38.2XPoisoning by, adverse effect of and underdosing of antithyroid drugsCategory
T38.2X1Poisoning by antithyroid drugs, accidental (unintentional)Category
T38.2X1APoisoning by antithyroid drugs, accidental (unintentional), initial encounterBillable
T38.2X1DPoisoning by antithyroid drugs, accidental (unintentional), subsequent encounterBillable
T38.2X1SPoisoning by antithyroid drugs, accidental (unintentional), sequelaBillable
T38.2X2Poisoning by antithyroid drugs, intentional self-harmCategory
T38.2X2APoisoning by antithyroid drugs, intentional self-harm, initial encounterBillable
T38.2X2DPoisoning by antithyroid drugs, intentional self-harm, subsequent encounterBillable
T38.2X2SPoisoning by antithyroid drugs, intentional self-harm, sequelaBillable
T38.2X3Poisoning by antithyroid drugs, assaultCategory
T38.2X3APoisoning by antithyroid drugs, assault, initial encounterBillable
T38.2X3DPoisoning by antithyroid drugs, assault, subsequent encounterBillable
T38.2X3SPoisoning by antithyroid drugs, assault, sequelaBillable
T38.2X4Poisoning by antithyroid drugs, undeterminedCategory
T38.2X4APoisoning by antithyroid drugs, undetermined, initial encounterBillable
T38.2X4DPoisoning by antithyroid drugs, undetermined, subsequent encounterBillable
T38.2X4SPoisoning by antithyroid drugs, undetermined, sequelaBillable
T38.2X5Adverse effect of antithyroid drugsCategory
T38.2X5AAdverse effect of antithyroid drugs, initial encounterBillable
T38.2X5DAdverse effect of antithyroid drugs, subsequent encounterBillable
T38.2X5SAdverse effect of antithyroid drugs, sequelaBillable
T38.2X6Underdosing of antithyroid drugsCategory
T38.2X6AUnderdosing of antithyroid drugs, initial encounterBillable
T38.2X6DUnderdosing of antithyroid drugs, subsequent encounterBillable
T38.2X6SUnderdosing of antithyroid drugs, sequelaBillable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.