AutoICD API

T40.491

Non-billable

Poisoning by other synthetic narcotics, accidental

Poisoning by other synthetic narcotics, accidental (unintentional)

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

Parent Code

T40.49

Child Codes

3

Coding Notes

Inclusion Terms

Alternative clinical terms for this condition

  • Poisoning by other synthetic narcotics NOS

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-)

Child Codes (3)

T40.491A

Poisoning by other synthetic narcotics, accidental, init

BillableT40.491D

Poisoning by other synthetic narcotics, accidental, subs

BillableT40.491S

Poisoning by other synthetic narcotics, accidental, sequela

Billable

Also Known As / Clinical Terms

UMLS

Frequently Asked Questions

What is the ICD-10 code for poisoning by other synthetic narcotics, accidental?

The ICD-10-CM code for poisoning by other synthetic narcotics, accidental is T40.491. The full clinical description is "Poisoning by other synthetic narcotics, accidental (unintentional)". T40.491 is a non-billable header code. Use a more specific child code for billing purposes.

What does ICD-10 code T40.491 mean?

ICD-10-CM code T40.491 represents "Poisoning by other synthetic narcotics, accidental (unintentional)". 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 T40.491 a billable code?

No, T40.491 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under T40.491.

What chapter is T40.491 in?

T40.491 is in Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (codes S00-T88).

What codes cannot be used with T40.491?

T40.491 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 T40.491?

T40.491 has 3 child codes, including: T40.491A (Poisoning by other synthetic narcotics, accidental, init), T40.491D (Poisoning by other synthetic narcotics, accidental, subs), T40.491S (Poisoning by other synthetic narcotics, accidental, sequela).

Are additional codes required with T40.491?

Yes, when using T40.491 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 T40.491?

T40.491 is linked to 2 UMLS Concept Unique Identifiers: C0478436, C5384941. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.

Automate ICD-10 Coding With AI

Send clinical text to the AutoICD API and get back structured ICD-10 codes with confidence scores. Integrates into any EHR or billing system in minutes.

Try FreeView API Docs

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.