T43

ICD-10Non-billable category

Psychotropic drugs, not elsewhere classified

Official ICD-10-CM descriptor (FY2026)

Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified

T43 is a category heading, not a billable code. CMS does not accept it on a claim; report one of the more specific codes beneath it.

Excludes1

Not coded here. An Excludes1 code should never be reported at the same time as the code above it.

  • appetite depressants (T50.5-)
  • barbiturates (T42.3-)
  • benzodiazepines (T42.4-)
  • methaqualone (T42.6-)
  • psychodysleptics [hallucinogens] (T40.7-T40.9-)

Excludes2

Not included here. The condition is not part of this code, but a patient may have both, and both codes may be reported together.

  • drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.- -F19.-)

7th character

  • The appropriate 7th character is to be added to each code from category T43

Permitted 7th characters

Ainitial encounter
Dsubsequent encounter
Ssequela

More specific codes under T43

Where this code sits

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Source

ICD-10-CM FY2026. Centers for Medicare & Medicaid Services (CMS) / National Center for Health Statistics (NCHS), “2026 ICD-10-CM Code Descriptions in Tabular Order” (icd10cm_order_2026.txt). Download the original file from cms.gov. Public domain (US Government work). Descriptors, billable flags and instructional notes on this page are reproduced from that file without modification. Krasyn adds no clinical guidance.

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