2020 ICD-10-CM Diagnosis Code T42.6X1

Poisoning by other antiepileptic and sedative-hypnotic drugs, accidental (unintentional)

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • T42.6X1 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • Short description: Poisoning by oth antieplptc and sed-hypntc drugs, acc
  • The 2020 edition of ICD-10-CM T42.6X1 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of T42.6X1 - other international versions of ICD-10 T42.6X1 may differ.
Applicable To
  • Poisoning by other antiepileptic and sedative-hypnotic drugs NOS
The following code(s) above T42.6X1 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to T42.6X1:
  • S00-T88
    2020 ICD-10-CM Range S00-T88

    Injury, poisoning and certain other consequences of external causes

    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
    Type 1 Excludes
    Use Additional
    • code to identify any retained foreign body, if applicable (Z18.-)
    Injury, poisoning and certain other consequences of external causes
  • T36-T50
    2020 ICD-10-CM Range T36-T50

    Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances

    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.
    Type 1 Excludes
    • toxic reaction to local anesthesia in pregnancy (O29.3-)
    Type 2 Excludes
    • abuse and dependence of psychoactive substances (F10-F19)
    • abuse of non-dependence-producing substances (F55.-)
    • drug reaction and poisoning affecting newborn (P00-P96)
    • pathological drug intoxication (inebriation) (F10-F19)
    Use Additional
    • 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-)
    Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
  • T42
    ICD-10-CM Diagnosis Code T42

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

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 2 Excludes
    • drug dependence and related mental and behavioral disorders due to psychoactive substance use (F10.--F19.-)
    Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs
  • T42.6
    ICD-10-CM Diagnosis Code T42.6

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

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Poisoning by, adverse effect of and underdosing of methaqualone
    • Poisoning by, adverse effect of and underdosing of valproic acid
    Type 1 Excludes
    • poisoning by, adverse effect of and underdosing of carbamazepine (T42.1-)
    Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
ICD-10-CM Codes Adjacent To T42.6X1
T42.5X5 Adverse effect of mixed antiepileptics
T42.5X5A …… initial encounter
T42.5X5D …… subsequent encounter
T42.5X5S …… sequela
T42.5X6 Underdosing of mixed antiepileptics
T42.5X6A …… initial encounter
T42.5X6D …… subsequent encounter
T42.5X6S …… sequela
T42.6 Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs
T42.6X Poisoning by, adverse effect of and underdosing of other antiepileptic and sedative-hypnotic drugs
T42.6X1 Poisoning by other antiepileptic and sedative-hypnotic drugs, accidental (unintentional)
T42.6X1A …… initial encounter
T42.6X1D …… subsequent encounter
T42.6X1S …… sequela
T42.6X2 Poisoning by other antiepileptic and sedative-hypnotic drugs, intentional self-harm
T42.6X2A …… initial encounter
T42.6X2D …… subsequent encounter
T42.6X2S …… sequela
T42.6X3 Poisoning by other antiepileptic and sedative-hypnotic drugs, assault
T42.6X3A …… initial encounter
T42.6X3D …… subsequent encounter

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.