Is T43.9 a billable code?
No. T43.9 is a header code that groups 0 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
T43.9: Poisoning by, adverse effect of and underdosing of unspecified psychotropic drug
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
T43.9 groups related diagnoses under poisoning by, adverse effect of and underdosing of unspecified psychotropic drug. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Other codes in T43 Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
- T43.0Poisoning by, adverse effect of and underdosing of tricyclic and tetracyclic antidepressantsheader
- T43.1Poisoning by, adverse effect of and underdosing of monoamine-oxidase-inhibitor antidepressantsheader
- T43.2Poisoning by, adverse effect of and underdosing of other and unspecified antidepressantsheader
- T43.3Poisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neurolepticsheader
- T43.4Poisoning by, adverse effect of and underdosing of butyrophenone and thiothixene neurolepticsheader
- T43.5Poisoning by, adverse effect of and underdosing of other and unspecified antipsychotics and neurolepticsheader
- T43.6Poisoning by, adverse effect of and underdosing of psychostimulantsheader
- T43.8Poisoning by, adverse effect of and underdosing of other psychotropic drugsheader
T43.9 questions
What does T43.9 mean?
T43.9 is the ICD-10-CM code for Poisoning by, adverse effect of and underdosing of unspecified psychotropic drug. It is in chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.