T43.9
T43.9: Poisoning by, adverse effect of and underdosing of unspecified psychotropic drug
Non-billable headerICD-10-CM
T43.9 is a non-billable header ICD-10-CM code for poisoning by, adverse effect of and underdosing of unspecified psychotropic drug. 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 T43.9
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 T43.9
6 child codes. Green means billable.
- T43.91Poisoning by unspecified psychotropic drug, accidental (unintentional)
- T43.92Poisoning by unspecified psychotropic drug, intentional self-harm
- T43.93Poisoning by unspecified psychotropic drug, assault
- T43.94Poisoning by unspecified psychotropic drug, undetermined
- T43.95Adverse effect of unspecified psychotropic drug
- T43.96Underdosing of unspecified psychotropic drug
Other codes under T43
- T43.0Poisoning by, adverse effect of and underdosing of tricyclic and tetracyclic antidepressants
- T43.1Poisoning by, adverse effect of and underdosing of monoamine-oxidase-inhibitor antidepressants
- T43.2Poisoning by, adverse effect of and underdosing of other and unspecified antidepressants
- T43.3Poisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neuroleptics
- T43.4Poisoning by, adverse effect of and underdosing of butyrophenone and thiothixene neuroleptics
- T43.5Poisoning by, adverse effect of and underdosing of other and unspecified antipsychotics and neuroleptics
- T43.6Poisoning by, adverse effect of and underdosing of psychostimulants
- T43.8Poisoning by, adverse effect of and underdosing of other psychotropic drugs