ICD-10-CM › S00-T88 › T36-T50 › T50.91 Poisoning by, adverse effect of... › T50.913

T50.913

Poisoning by multiple unspecified drugs, medicaments and biological substances, assault

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, FY2020 onwards. It has never been valid for submission on its own.

Submit one of these 3 more specific codes instead:

  • T50.913A Poisoning by multiple unspecified drugs, medicaments and biological substances, assault, initial encounter
  • T50.913D Poisoning by multiple unspecified drugs, medicaments and biological substances, assault, subsequent encounter
  • T50.913S Poisoning by multiple unspecified drugs, medicaments and biological substances, assault, sequela

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

What has happened to this code

Every change the publisher made, from 2020 to now.

  1. FY2020 Added to the code set Poisoning by multiple unspecified drugs, medicaments and biological substances, assault

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 T50 Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substances

Seventh character required

  • The appropriate 7th character is to be added to each code from category T50

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.

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Codes in the same group

CodeDescriptionStatus
T50.911 Poisoning by multiple unspecified drugs, medicaments and biological substances, accidental (unintentional) Not billable
T50.912 Poisoning by multiple unspecified drugs, medicaments and biological substances, intentional self-harm Not billable
T50.914 Poisoning by multiple unspecified drugs, medicaments and biological substances, undetermined Not billable
T50.915 Adverse effect of multiple unspecified drugs, medicaments and biological substances Not billable
T50.916 Underdosing of multiple unspecified drugs, medicaments and biological substances Not billable