ICD-10-CM › S00-T88 › T36-T50 › T42.7 Poisoning by, adverse effect of... › T42.76

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, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 3 more specific codes instead:

• T42.76XA Underdosing of unspecified antiepileptic and sedative-hypnotic drugs, initial encounter
• T42.76XD Underdosing of unspecified antiepileptic and sedative-hypnotic drugs, subsequent encounter
• T42.76XS Underdosing of unspecified antiepileptic and sedative-hypnotic drugs, sequela

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

What has happened to this code

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 T42 Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs

Seventh character required

• The appropriate 7th character is to be added to each code from category T42

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.

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.

• Depressant > central nervous system
• Hypnotic
• Soporific
• Sedative NEC
• Anticonvulsant
• Soporific drug
• Antiepilepsy agent
• Sleeping draught, pill
• Hypnotic > anticonvulsant
• Depressant > central nervous system
• Central nervous system > depressants
• Central nervous system > depressants > hypnotics
• Central nervous system > depressants > sedatives; sedative-hypnotics

Codes in the same group

Code	Description	Status
T42.71	Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, accidental (unintentional)	Not billable
T42.72	Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, intentional self-harm	Not billable
T42.73	Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, assault	Not billable
T42.74	Poisoning by unspecified antiepileptic and sedative-hypnotic drugs, undetermined	Not billable
T42.75	Adverse effect of unspecified antiepileptic and sedative-hypnotic drugs	Not billable