T43.016
T43.016: Underdosing of tricyclic antidepressants
Non-billable headerICD-10-CM
T43.016 is a non-billable header ICD-10-CM code for underdosing of tricyclic antidepressants. It cannot be billed on its own: choose one of the more specific child codes below. This code also requires a 7th character before it is complete.
This code requires a 7th character
The appropriate 7th character is to be added to each code from category T43
- A
- initial encounter
- D
- subsequent encounter
- S
- sequela
Excludes2 inherited from the categories above T43.016
Not part of this code, but both may be coded when both are present.
Written on T43: Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Code history
Unchanged in every release from FY2024 to FY2027.
Code to one of these instead T43.016
3 child codes. Green means billable.
Other codes under T43.01
- T43.011Poisoning by tricyclic antidepressants, accidental (unintentional)
- T43.012Poisoning by tricyclic antidepressants, intentional self-harm
- T43.013Poisoning by tricyclic antidepressants, assault
- T43.014Poisoning by tricyclic antidepressants, undetermined
- T43.015Adverse effect of tricyclic antidepressants