T38.1X1
Poisoning by thyroid hormones and substitutes, accidental (unintentional)
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 5 never code together
T38code
Excludes1 — never code together. The excluded condition and this one are mutually exclusive.
Excludes2 — not included here, but the patient may have both. Code both when documented.
7th character 3
A initial encounter
D subsequent encounter
S sequela
Instructional notes 4
T38.1X1code
Inclusion terms
- Poisoning by thyroid hormones and substitutes NOS
S00-T88chapter
Notes
- Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
Use additional code
- code to identify any retained foreign body, if applicable (Z18.-)Z18.-
Index entries leading here filed at null
No alphabetic index entry points at this code.
Alongside this code 5 same parent — T38.1X
T38.1X2 Poisoning by thyroid hormones and substitutes, self-harm category T38.1X3 Poisoning by thyroid hormones and substitutes, assault category T38.1X4 Poisoning by thyroid hormones and substitutes, undetermined category T38.1X5 Adverse effect of thyroid hormones and substitutes category T38.1X6 Underdosing of thyroid hormones and substitutes category
Subordinate codes 3
Additional references
AHA Coding Clinic® Licence required
Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.