T42.5X1
Poisoning by mixed antiepileptics, accidental (unintentional)
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 3 never code together
T42code
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
T42.5X1code
Inclusion terms
- Poisoning by mixed antiepileptics 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 1 filed at T42.5
The index files this at T42.5. The tabular
extends it — laterality, staging, or the 7th character — so these entries
lead to the family rather than to T42.5X1 exactly.
- Adverse effect — see Table of Drugs and Chemicals, categories T36-T50, with 6th character 5
Alongside this code 5 same parent — T42.5X
T42.5X2 Poisoning by mixed antiepileptics, intentional self-harm category T42.5X3 Poisoning by mixed antiepileptics, assault category T42.5X4 Poisoning by mixed antiepileptics, undetermined category T42.5X5 Adverse effect of mixed antiepileptics category T42.5X6 Underdosing of mixed antiepileptics 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.