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T40

Non-billable

Narcotics and psychodysleptics

Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]

This is a header/category code. For billing purposes, use a more specific child code from the list below.

Status

Non-billable / Header

Block

T36-T50

Child Codes

10

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)

  • birth trauma (P10-P15)
  • obstetric trauma (O70-O71)
  • toxic reaction to local anesthesia in pregnancy (O29.3-)

Excludes 2

Conditions not included here, but the patient may have both

  • abuse and dependence of psychoactive substances (F10-F19)
  • abuse of non-dependence-producing substances (F55.-)
  • immunodeficiency due to drugs (D84.821)
  • drug reaction and poisoning affecting newborn (P00-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 NOS (T88.7)
  • aspirin gastritis (K29.-)
  • blood disorders (D56-D76)
  • contact dermatitis (L23-L25)
  • dermatitis due to substances taken internally (L27.-)
  • nephropathy (N14.0-N14.2)

Use Additional Code

Additional codes that should follow this code

  • code to identify 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-)

7th Character Definitions

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Child Codes (10)

T40.0

Poisoning by, adverse effect of and underdosing of opium

T40.1

Poisoning by and adverse effect of heroin

T40.2

Poisoning by, adverse effect of and underdosing of opioids

T40.3

Poisoning by, adverse effect of and underdosing of methadone

T40.4

Synthetic narcotics

T40.5

Poisoning by, adverse effect of and underdosing of cocaine

T40.6

And unsp narcotics

T40.7

Cannabis (derivatives)

T40.8

Poisoning by and adverse effect of lysergide [LSD]

T40.9

And unsp psychodysleptics

Also Known As / Clinical Terms

UMLS

Frequently Asked Questions

What is ICD-10 code T40?

ICD-10-CM code T40 represents "Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]". It is a non-billable header code — use a more specific child code for billing purposes.

Is T40 a billable code?

No, T40 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 10 child codes under T40.

What chapter is T40 in?

T40 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).

What codes cannot be used with T40?

T40 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-).

What are the subcategories under T40?

T40 has 10 child codes, including: T40.0 (Poisoning by, adverse effect of and underdosing of opium), T40.1 (Poisoning by and adverse effect of heroin), T40.2 (Poisoning by, adverse effect of and underdosing of opioids), T40.3 (Poisoning by, adverse effect of and underdosing of methadone), and 6 more.

Are additional codes required with T40?

Yes, when using T40 you should also code: code to identify 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 T40?

T40 is linked to 1 UMLS Concept Unique Identifier: C2877556. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

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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.