T38.3 — Poisoning by, adverse effect of and underdosing of insulin and oral hypoglycemic [antidiabetic] drugs
Is T38.3 billable?
No — T38.3 is a non-billable header code. T38.3 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 T38.3.
Billable codes under this header
- 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
- T38.3X3APoisoning by insulin and oral hypoglycemic [antidiabetic] drugs, assault, initial encounter
- T38.3X3DPoisoning by insulin and oral hypoglycemic [antidiabetic] drugs, assault, subsequent encounter
- T38.3X3SPoisoning by insulin and oral hypoglycemic [antidiabetic] drugs, assault, sequela
- T38.3X4APoisoning by insulin and oral hypoglycemic [antidiabetic] drugs, undetermined, initial encounter
- T38.3X4DPoisoning by insulin and oral hypoglycemic [antidiabetic] drugs, undetermined, subsequent encounter
- T38.3X4SPoisoning by insulin and oral hypoglycemic [antidiabetic] drugs, undetermined, sequela
- T38.3X5AAdverse effect of insulin and oral hypoglycemic [antidiabetic] drugs, initial encounter
- T38.3X5DAdverse effect of insulin and oral hypoglycemic [antidiabetic] drugs, subsequent encounter
- T38.3X5SAdverse effect of insulin and oral hypoglycemic [antidiabetic] drugs, sequela
- T38.3X6AUnderdosing of insulin and oral hypoglycemic [antidiabetic] drugs, initial encounter
- T38.3X6DUnderdosing of insulin and oral hypoglycemic [antidiabetic] drugs, subsequent encounter
- T38.3X6SUnderdosing of insulin and oral hypoglycemic [antidiabetic] drugs, sequela
T38.3 at a glance
| Code | T38.3 |
|---|---|
| Description | Poisoning by, adverse effect of and underdosing of insulin and oral hypoglycemic [antidiabetic] drugs |
| Billable | No — header code |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
How is T38.3 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to T38.3. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Reaction › insulin
Excludes1 — never code together — inherited from T36-T50
The conditions below can never be reported together with T38.3 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 T38.3 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 T38.3. T38.3 describes a manifestation and cannot be the principal or first-listed diagnosis.
Use additional code — inherited from Chapter 19
Report an additional code alongside T38.3 to fully describe the condition. T38.3 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 T38.3 to fully describe the condition. T38.3 is sequenced first.
Excludes2 — not included here — inherited from Chapter 19
The conditions below are not part of T38.3, but a patient may have both at the same time. When documentation supports it, T38.3 and the excluded code may both be reported.
Excludes2 — not included here — inherited from T36-T50
The conditions below are not part of T38.3, but a patient may have both at the same time. When documentation supports it, T38.3 and the excluded code may both be reported.
What codes fall under T38.3? (1)
How long has T38.3 existed?
T38.3 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
- T38.2Poisoning by, adverse effect of and underdosing of antithyroid 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