T38 — Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified
Not billable
Is T38 billable?
No — T38 is a non-billable header code. T38 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 60 billable codes beneath T38.
Billable codes under this header
- T38.0X1APoisoning by glucocorticoids and synthetic analogues, accidental (unintentional), initial encounter
- T38.0X1DPoisoning by glucocorticoids and synthetic analogues, accidental (unintentional), subsequent encounter
- T38.0X1SPoisoning by glucocorticoids and synthetic analogues, accidental (unintentional), sequela
- T38.0X2APoisoning by glucocorticoids and synthetic analogues, intentional self-harm, initial encounter
- T38.0X2DPoisoning by glucocorticoids and synthetic analogues, intentional self-harm, subsequent encounter
- T38.0X2SPoisoning by glucocorticoids and synthetic analogues, intentional self-harm, sequela
- T38.0X3APoisoning by glucocorticoids and synthetic analogues, assault, initial encounter
- T38.0X3DPoisoning by glucocorticoids and synthetic analogues, assault, subsequent encounter
- T38.0X3SPoisoning by glucocorticoids and synthetic analogues, assault, sequela
- T38.0X4APoisoning by glucocorticoids and synthetic analogues, undetermined, initial encounter
- T38.0X4DPoisoning by glucocorticoids and synthetic analogues, undetermined, subsequent encounter
- T38.0X4SPoisoning by glucocorticoids and synthetic analogues, undetermined, sequela
- T38.0X5AAdverse effect of glucocorticoids and synthetic analogues, initial encounter
- T38.0X5DAdverse effect of glucocorticoids and synthetic analogues, subsequent encounter
- T38.0X5SAdverse effect of glucocorticoids and synthetic analogues, sequela
- T38.0X6AUnderdosing of glucocorticoids and synthetic analogues, initial encounter
- T38.0X6DUnderdosing of glucocorticoids and synthetic analogues, subsequent encounter
- T38.0X6SUnderdosing of glucocorticoids and synthetic analogues, sequela
- T38.1X1APoisoning by thyroid hormones and substitutes, accidental (unintentional), initial encounter
- T38.1X1DPoisoning by thyroid hormones and substitutes, accidental (unintentional), subsequent encounter
- T38.1X1SPoisoning by thyroid hormones and substitutes, accidental (unintentional), sequela
- T38.1X2APoisoning by thyroid hormones and substitutes, intentional self-harm, initial encounter
- T38.1X2DPoisoning by thyroid hormones and substitutes, intentional self-harm, subsequent encounter
- T38.1X2SPoisoning by thyroid hormones and substitutes, intentional self-harm, sequela
- T38.1X3APoisoning by thyroid hormones and substitutes, assault, initial encounter
- T38.1X3DPoisoning by thyroid hormones and substitutes, assault, subsequent encounter
- T38.1X3SPoisoning by thyroid hormones and substitutes, assault, sequela
- T38.1X4APoisoning by thyroid hormones and substitutes, undetermined, initial encounter
- T38.1X4DPoisoning by thyroid hormones and substitutes, undetermined, subsequent encounter
- T38.1X4SPoisoning by thyroid hormones and substitutes, undetermined, sequela
- T38.1X5AAdverse effect of thyroid hormones and substitutes, initial encounter
- T38.1X5DAdverse effect of thyroid hormones and substitutes, subsequent encounter
- T38.1X5SAdverse effect of thyroid hormones and substitutes, sequela
- T38.1X6AUnderdosing of thyroid hormones and substitutes, initial encounter
- T38.1X6DUnderdosing of thyroid hormones and substitutes, subsequent encounter
- T38.1X6SUnderdosing of thyroid hormones and substitutes, sequela
- 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
- T38.3X1APoisoning by insulin and oral hypoglycemic [antidiabetic] drugs, accidental (unintentional), initial encounter
- T38.3X1DPoisoning by insulin and oral hypoglycemic [antidiabetic] drugs, accidental (unintentional), subsequent encounter
- T38.3X1SPoisoning by insulin and oral hypoglycemic [antidiabetic] drugs, accidental (unintentional), sequela
- T38.3X2APoisoning by insulin and oral hypoglycemic [antidiabetic] drugs, intentional self-harm, initial encounter
- T38.3X2DPoisoning by insulin and oral hypoglycemic [antidiabetic] drugs, intentional self-harm, subsequent encounter
- T38.3X2SPoisoning by insulin and oral hypoglycemic [antidiabetic] drugs, intentional self-harm, sequela
T38 at a glance
| Code | T38 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classified |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
Excludes1 — never code together
The conditions below can never be reported together with T38 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T38 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-)
Code first — inherited from T36-T50
The underlying condition below must be sequenced before T38. T38 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 to fully describe the condition. T38 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 to fully describe the condition. T38 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T38, but a patient may have both at the same time. When documentation supports it, T38 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T38, but a patient may have both at the same time. When documentation supports it, T38 and the excluded code may both be reported.
What codes fall under T38? (10)
- 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
- T38.2Poisoning by, adverse effect of and underdosing of antithyroid drugsnot 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
How long has T38 existed?
T38 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.