T43.3
Poisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neuroleptics
- Release
- FY 2027
- Effective
Hierarchy
Where T43.3 sits in the official hierarchy. Each level is the code it is classified under.
- T43 Parent Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
- T43.3 This code Poisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neuroleptics
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Excludes2
appetite depressants ( T50.5- )
Inherited from T43 — Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
Excludes2
barbiturates ( T42.3- )
Inherited from T43 — Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
Excludes2
benzodiazepines ( T42.4- )
Inherited from T43 — Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
Excludes2
drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.- -F19.-)
Inherited from T43 — Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
Excludes2
methaqualone ( T42.6- )
Inherited from T43 — Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
Excludes2
psychodysleptics [hallucinogens] (T40.7-T40.9-)
Inherited from T43 — Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
7th Character
The appropriate 7th character is to be added to each code from category T43
Inherited from T43 — Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
7th Character
A - initial encounter
Inherited from T43 — Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
7th Character
D - subsequent encounter
Inherited from T43 — Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
7th Character
S - sequela
Inherited from T43 — Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
More Specific Codes
1 code under T43.3
Version History
How T43.3 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentPoisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neuroleptics
-
FY 2026 Effective
UnchangedPoisoning by, adverse effect of and underdosing of phenothiazine antipsychotics and neuroleptics
Related Codes
Other codes under T43
- T43.0 Poisoning by, adverse effect of and underdosing of tricyclic and tetracyclic antidepressants
- T43.1 Poisoning by, adverse effect of and underdosing of monoamine-oxidase-inhibitor antidepressants
- T43.2 Poisoning by, adverse effect of and underdosing of other and unspecified antidepressants
- T43.4 Poisoning by, adverse effect of and underdosing of butyrophenone and thiothixene neuroleptics
- T43.5 Poisoning by, adverse effect of and underdosing of other and unspecified antipsychotics and neuroleptics
- T43.6 Poisoning by, adverse effect of and underdosing of psychostimulants
- T43.8 Poisoning by, adverse effect of and underdosing of other psychotropic drugs
- T43.9 Poisoning by, adverse effect of and underdosing of unspecified psychotropic drug
Codes whose official notes reference T43.3
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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