ICD-10-CM › S00-T88 › T36-T50 › T40.4 Poisoning by, adverse effect of... › T40.41

T40.41

Poisoning by, adverse effect of and underdosing of fentanyl or fentanyl analogs

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2021 onwards. It has never been valid for submission on its own.

Submit one of these 6 more specific codes instead:

  • T40.411 Poisoning by fentanyl or fentanyl analogs, accidental (unintentional) (also a header)
  • T40.412 Poisoning by fentanyl or fentanyl analogs, intentional self-harm (also a header)
  • T40.413 Poisoning by fentanyl or fentanyl analogs, assault (also a header)
  • T40.414 Poisoning by fentanyl or fentanyl analogs, undetermined (also a header)
  • T40.415 Adverse effect of fentanyl or fentanyl analogs (also a header)
  • T40.416 Underdosing of fentanyl or fentanyl analogs (also a header)

This code requires a seventh character. See the rule below.

What has happened to this code

Every change the publisher made, from 2021 to now.

  1. FY2021 Added to the code set Poisoning by, adverse effect of and underdosing of fentanyl or fentanyl analogs

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from T40 Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]

Seventh character required

  • The appropriate 7th character is to be added to each code from category T40

Excludes2 - not included here

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

Inherited from the T36-T50 section Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)

Excludes1 - never coded here

  • toxic reaction to local anesthesia in pregnancy (O29.3-)

Excludes2 - not included here

  • 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)

Use additional code

  • 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-)

Code first

  • , 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)

Includes

  • 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

Note

  • The drug giving rise to the adverse effect should be identified by use of codes from categories T36-T50 with fifth or sixth character 5.

Codes in the same group

CodeDescriptionStatus
T40.42 Poisoning by, adverse effect of and underdosing of tramadol Not billable
T40.49 Poisoning by, adverse effect of and underdosing of other synthetic narcotics Not billable
T40.4X Poisoning by, adverse effect of and underdosing of other synthetic narcotics Retired