T38.2 — Poisoning by, adverse effect of and underdosing of antithyroid drugs
Is T38.2 billable?
No — T38.2 is a non-billable header code. T38.2 groups more specific codes and cannot be submitted on a claim. A valid ICD-10-CM code must be reported at the highest level of specificity available in its branch. Select one of the 18 billable codes beneath T38.2.
Billable codes under this header
- T38.2X1APoisoning by antithyroid drugs, accidental (unintentional), initial encounter
- T38.2X1DPoisoning by antithyroid drugs, accidental (unintentional), subsequent encounter
- T38.2X1SPoisoning by antithyroid drugs, accidental (unintentional), sequela
- T38.2X2APoisoning by antithyroid drugs, intentional self-harm, initial encounter
- T38.2X2DPoisoning by antithyroid drugs, intentional self-harm, subsequent encounter
- T38.2X2SPoisoning by antithyroid drugs, intentional self-harm, sequela
- T38.2X3APoisoning by antithyroid drugs, assault, initial encounter
- T38.2X3DPoisoning by antithyroid drugs, assault, subsequent encounter
- T38.2X3SPoisoning by antithyroid drugs, assault, sequela
- T38.2X4APoisoning by antithyroid drugs, undetermined, initial encounter
- T38.2X4DPoisoning by antithyroid drugs, undetermined, subsequent encounter
- T38.2X4SPoisoning by antithyroid drugs, undetermined, sequela
- T38.2X5AAdverse effect of antithyroid drugs, initial encounter
- T38.2X5DAdverse effect of antithyroid drugs, subsequent encounter
- T38.2X5SAdverse effect of antithyroid drugs, sequela
- T38.2X6AUnderdosing of antithyroid drugs, initial encounter
- T38.2X6DUnderdosing of antithyroid drugs, subsequent encounter
- T38.2X6SUnderdosing of antithyroid drugs, sequela
T38.2 at a glance
| Code | T38.2 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of antithyroid drugs |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T38.2 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- toxic reaction to local anesthesia in pregnancy (O29.3-)
Excludes1 — never code together — inherited from T38
The conditions below can never be reported together with T38.2 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T38.2. T38.2 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T38.2 to fully describe the condition. T38.2 is sequenced first.
- code to identify any retained foreign body, if applicable (Z18.-)
Use additional code — inherited from T36-T50
Report an additional code alongside T38.2 to fully describe the condition. T38.2 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T38.2, but a patient may have both at the same time. When documentation supports it, T38.2 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T38.2, but a patient may have both at the same time. When documentation supports it, T38.2 and the excluded code may both be reported.
What codes fall under T38.2? (1)
How long has T38.2 existed?
T38.2 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.
What other codes are in the T38 family? (9)
- T38.0Poisoning by, adverse effect of and underdosing of glucocorticoids and synthetic analoguesnot billable
- T38.1Poisoning by, adverse effect of and underdosing of thyroid hormones and substitutesnot billable
- T38.3Poisoning by, adverse effect of and underdosing of insulin and oral hypoglycemic [antidiabetic] drugsnot billable
- T38.4Poisoning by, adverse effect of and underdosing of oral contraceptivesnot billable
- T38.5Poisoning by, adverse effect of and underdosing of other estrogens and progestogensnot billable
- T38.6Poisoning by, adverse effect of and underdosing of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classifiednot billable
- T38.7Poisoning by, adverse effect of and underdosing of androgens and anabolic congenersnot billable
- T38.8Poisoning by, adverse effect of and underdosing of other and unspecified hormones and synthetic substitutesnot billable
- T38.9Poisoning by, adverse effect of and underdosing of other and unspecified hormone antagonistsnot billable