T43
Non-billablePsychotropic drugs, not elsewhere classified
Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- adverse effect of correct substance properly administered
- poisoning by overdose of substance
- poisoning by wrong substance given or taken in error
- underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •abuse and dependence of psychoactive substancesF10-F19
- •abuse of non-dependence-producing substancesF55
- •immunodeficiency due to drugsD84.821
- •drug reaction and poisoning affecting newbornP00-P96
- •pathological drug intoxication (inebriation)F10-F19
- •drug dependence and related mental and behavioral disorders due to psychoactive substance use -F10, F19
Code First
The underlying condition must be sequenced before this code
- , for adverse effects, the nature of the adverse effect, such as:
- •adverse effect NOST88.7
- •aspirin gastritisK29
- •blood disordersD56-D76
- •contact dermatitisL23-L25
- •dermatitis due to substances taken internallyL27
- •nephropathyN14.0-N14.2
Use Additional Code
Additional codes that should follow this code
7th Character Definitions
- A - initial encounter
- D - subsequent encounter
- S - sequela
Child Codes (9)
T43.0Tricyclic and tetracyclic antidepressants
T43.1Monoamine-oxidase-inhibitor antidepressants
T43.2And unsp antidepressants
T43.3Phenothiazine antipsychotics and neuroleptics
T43.4Butyrophenone and thiothixene neuroleptics
T43.5And unsp antipsychotics and neuroleptics
T43.6Psychostimulants
T43.8Psychotropic drugs
T43.9Unsp psychotropic drug
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(2)
Frequently Asked Questions
What is the ICD-10 code for psychotropic drugs, not elsewhere classified?
The ICD-10-CM code for psychotropic drugs, not elsewhere classified is T43. The full clinical description is "Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified". T43 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code T43 mean?
ICD-10-CM code T43 represents “Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified”. It is classified under Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes and is a non-billable header code. Use a more specific child code for billing purposes.
Is T43 a billable code?
No, T43 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 9 child codes under T43.
What chapter is T43 in?
T43 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).
What codes cannot be used with T43?
T43 has Excludes1 notes indicating codes that cannot be used together with it, including: birth trauma (P10-P15); obstetric trauma (O70-O71); toxic reaction to local anesthesia in pregnancy (O29.3-); and 5 more.
What are the subcategories under T43?
T43 has 9 child codes, including: T43.0 (Tricyclic and tetracyclic antidepressants), T43.1 (Monoamine-oxidase-inhibitor antidepressants), T43.2 (And unsp antidepressants), T43.3 (Phenothiazine antipsychotics and neuroleptics), and 5 more.
Are additional codes required with T43?
Yes, when using T43, also report: any retained foreign body, if applicable (Z18.-); code(s) to specify:; manifestations of poisoning; underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9); underdosing of medication regimen (Z91.12-, Z91.13-).
What are the UMLS CUIs for T43?
T43 is linked to 1 UMLS Concept Unique Identifier: C2878271. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does T43 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like psychotropic drugs, not elsewhere classified affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of T43?
T43 maps to the ICD-11 code: NE60 (Harmful effects of drugs, medicaments or biological substances, not elsewhere classified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.