Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs
Requires 7th character
T42 requires a 7th character to be reported. Choose a complete code below.
Inclusion terms
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: Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
- Note: The chapter uses the S-section for coding different types of injuries related to single body regions and the T-section to cover injuries to unspecified body regions as well as poisoning and certain other consequences of external causes.
- 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.
Excludes1
Not coded here — never report together with this code.
- toxic reaction to local anesthesia in pregnancy (O29.3-)
Excludes2
Not included here — may be reported together when both conditions exist.
- birth trauma (P10-P15)
- obstetric trauma (O70-O71)
- 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
Sequence the underlying condition first.
Use additional code
Add a code to identify the following, if applicable.
7th character
This code requires a 7th character. Use the placeholder "X" for missing positions.
| Character | Meaning |
|---|---|
| A | initial encounter |
| D | subsequent encounter |
| S | sequela |
More specific codes T42
- T42.0Poisoning by, adverse effect of and underdosing of hydantoin derivativesNeeds 7th char
- T42.1Poisoning by, adverse effect of and underdosing of iminostilbenesNeeds 7th char
- T42.2Poisoning by, adverse effect of and underdosing of succinimides and oxazolidinedionesNeeds 7th char
- T42.3Poisoning by, adverse effect of and underdosing of barbituratesNeeds 7th char
- T42.4Poisoning by, adverse effect of and underdosing of benzodiazepinesNeeds 7th char
- T42.5Poisoning by, adverse effect of and underdosing of mixed antiepilepticsNeeds 7th char
- T42.6Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugsNeeds 7th char
- T42.7Poisoning by, adverse effect of and underdosing of unspecified antiepileptic and sedative-hypnotic drugsNeeds 7th char
- T42.8Poisoning by, adverse effect of and underdosing of antiparkinsonism drugs and other central muscle-tone depressantsNeeds 7th char
Related codes
- T36Poisoning by, adverse effect of and underdosing of systemic antibioticsNeeds 7th char
- T37Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasiticsNeeds 7th char
- T38Poisoning by, adverse effect of and underdosing of hormones and their synthetic substitutes and antagonists, not elsewhere classifiedNeeds 7th char
- T39Poisoning by, adverse effect of and underdosing of nonopioid analgesics, antipyretics and antirheumaticsNeeds 7th char
- T40Poisoning by, adverse effect of and underdosing of narcotics and psychodysleptics [hallucinogens]Needs 7th char
- T41Poisoning by, adverse effect of and underdosing of anesthetics and therapeutic gasesNeeds 7th char
- T43Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classifiedNeeds 7th char
- T44Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous systemNeeds 7th char
- T45Poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classifiedNeeds 7th char
- T46Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular systemNeeds 7th char
- T47Poisoning by, adverse effect of and underdosing of agents primarily affecting the gastrointestinal systemNeeds 7th char
- T48Poisoning by, adverse effect of and underdosing of agents primarily acting on smooth and skeletal muscles and the respiratory systemNeeds 7th char
- T49Poisoning by, adverse effect of and underdosing of topical agents primarily affecting skin and mucous membrane and by ophthalmological, otorhinorlaryngological and dental drugsNeeds 7th char
- T50Poisoning by, adverse effect of and underdosing of diuretics and other and unspecified drugs, medicaments and biological substancesNeeds 7th char