T38.905
Adverse effect of unspecified hormone antagonists
Not billable — category only FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 5 more
specific codes sit alongside it. Worth
checking whether the documentation supports one of them.
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 3
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 1
- Adverse effect — see Table of Drugs and Chemicals, categories T36-T50, with 6th character 5
Alongside this code 5 same parent — T38.90
T38.901 Poisoning by unsp hormone antagonists, accidental category T38.902 Poisoning by unsp hormone antagonists, intentional self-harm category T38.903 Poisoning by unspecified hormone antagonists, assault category T38.904 Poisoning by unspecified hormone antagonists, undetermined category T38.906 Underdosing of unspecified hormone antagonists 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.