T43.012
Poisoning by tricyclic antidepressants, intentional self-harm
Not billable — category only FY2026 2025-10-01 → 2026-09-30
Exclusions 8 never code together
T43code
Excludes1
- appetite depressants (T50.5-)T50.5-
- barbiturates (T42.3-)T42.3-
- benzodiazepines (T42.4-)T42.4-
- methaqualone (T42.6-)T42.6-
- psychodysleptics [hallucinogens] (T40.7-T40.9-)T40.7-T40.9
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 filed at null
No alphabetic index entry points at this code.
Alongside this code 5 same parent — T43.01
T43.011 Poisoning by tricyclic antidepressants, accidental category T43.013 Poisoning by tricyclic antidepressants, assault category T43.014 Poisoning by tricyclic antidepressants, undetermined category T43.015 Adverse effect of tricyclic antidepressants category T43.016 Underdosing of tricyclic antidepressants 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.