2018 ICD-10-CM Diagnosis Code T43

Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified

Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as T43. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • appetite depressants (
    ICD-10-CM Diagnosis Code T50.5

    Poisoning by, adverse effect of and underdosing of appetite depressants

      2016 2017 2018 Non-Billable/Non-Specific Code
    T50.5-
    )
  • barbiturates (
    ICD-10-CM Diagnosis Code T42.3

    Poisoning by, adverse effect of and underdosing of barbiturates

      2016 2017 2018 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • poisoning by, adverse effect of and underdosing of thiobarbiturates (T41.1-)
    T42.3-
    )
  • benzodiazepines (
    ICD-10-CM Diagnosis Code T42.4

    Poisoning by, adverse effect of and underdosing of benzodiazepines

      2016 2017 2018 Non-Billable/Non-Specific Code
    T42.4-
    )
  • methaqualone (
    ICD-10-CM Diagnosis Code T42.6

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

      2016 2017 2018 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-)
    T42.6-
    )
  • psychodysleptics [hallucinogens] (
    ICD-10-CM Diagnosis Code T40.7

    Poisoning by, adverse effect of and underdosing of cannabis (derivatives)

      2016 2017 2018 Non-Billable/Non-Specific Code
    T40.7-
    ICD-10-CM Diagnosis Code T40.9

    Poisoning by, adverse effect of and underdosing of other and unspecified psychodysleptics [hallucinogens]

      2016 2017 2018 Non-Billable/Non-Specific Code
    T40.9-
    )
Type 2 Excludes
Type 2 Excludes Help
A type 2 excludes note represents "not included here". A type 2 excludes note indicates that the condition excluded is not part of the condition it is excluded from but a patient may have both conditions at the same time. When a type 2 excludes note appears under a code it is acceptable to use both the code (T43) and the excluded code together.
  • drug dependence and related mental and behavioral disorders due to psychoactive substance use (
    ICD-10-CM Diagnosis Code F10
    • F10 Alcohol related disorders
      • F10.1 Alcohol abuse
        • F10.10 …… uncomplicated
        • F10.11 …… in remission
        • F10.12 Alcohol abuse with intoxication
          • F10.120 Alcohol abuse with intoxication, uncomplicate...
          • F10.121 …… delirium
          • F10.129 …… unspecified
        • F10.14 Alcohol abuse with alcohol-induced mood disor...
        • F10.15 Alcohol abuse with alcohol-induced psychotic ...
          • F10.150 Alcohol abuse with alcohol-induced psychotic ...
          • F10.151 Alcohol abuse with alcohol-induced psychotic ...
          • F10.159 Alcohol abuse with alcohol-induced psychotic ...
        • F10.18 Alcohol abuse with other alcohol-induced diso...
          • F10.180 Alcohol abuse with alcohol-induced anxiety di...
          • F10.181 Alcohol abuse with alcohol-induced sexual dys...
          • F10.182 Alcohol abuse with alcohol-induced sleep diso...
          • F10.188 Alcohol abuse with other alcohol-induced diso...
        • F10.19 Alcohol abuse with unspecified alcohol-induce...
      • F10.2 Alcohol dependence
        • F10.20 …… uncomplicated
        • F10.21 …… in remission
        • F10.22 Alcohol dependence with intoxication
          • F10.220 Alcohol dependence with intoxication, uncompl...
          • F10.221 Alcohol dependence with intoxication delirium...
          • F10.229 Alcohol dependence with intoxication, unspeci...
        • F10.23 Alcohol dependence with withdrawal
          • F10.230 Alcohol dependence with withdrawal, uncomplic...
          • F10.231 …… delirium
          • F10.232 Alcohol dependence with withdrawal with perce...
          • F10.239 Alcohol dependence with withdrawal, unspecifi...
        • F10.24 Alcohol dependence with alcohol-induced mood ...
        • F10.25 Alcohol dependence with alcohol-induced psych...
          • F10.250 Alcohol dependence with alcohol-induced psych...
          • F10.251 Alcohol dependence with alcohol-induced psych...
          • F10.259 Alcohol dependence with alcohol-induced psych...
        • F10.26 Alcohol dependence with alcohol-induced persi...
        • F10.27 Alcohol dependence with alcohol-induced persi...
        • F10.28 Alcohol dependence with other alcohol-induced...
          • F10.280 Alcohol dependence with alcohol-induced anxie...
          • F10.281 Alcohol dependence with alcohol-induced sexua...
          • F10.282 Alcohol dependence with alcohol-induced sleep...
          • F10.288 Alcohol dependence with other alcohol-induced...
        • F10.29 Alcohol dependence with unspecified alcohol-i...
      • F10.9 Alcohol use, unspecified
        • F10.92 Alcohol use, unspecified with intoxication
          • F10.920 Alcohol use, unspecified with intoxication, u...
          • F10.921 Alcohol use, unspecified with intoxication de...
          • F10.929 Alcohol use, unspecified with intoxication, u...
        • F10.94 Alcohol use, unspecified with alcohol-induced...
        • F10.95 Alcohol use, unspecified with alcohol-induced...
          • F10.950 Alcohol use, unspecified with alcohol-induced...
          • F10.951 Alcohol use, unspecified with alcohol-induced...
          • F10.959 Alcohol use, unspecified with alcohol-induced...
        • F10.96 Alcohol use, unspecified with alcohol-induced...
        • F10.97 Alcohol use, unspecified with alcohol-induced...
        • F10.98 Alcohol use, unspecified with other alcohol-i...
          • F10.980 Alcohol use, unspecified with alcohol-induced...
          • F10.981 Alcohol use, unspecified with alcohol-induced...
          • F10.982 Alcohol use, unspecified with alcohol-induced...
          • F10.988 Alcohol use, unspecified with other alcohol-i...
        • F10.99 Alcohol use, unspecified with unspecified alc...
    F10.-
    -
    ICD-10-CM Diagnosis Code F19
    • F19 Other psychoactive substance related disorder...
      • F19.1 Other psychoactive substance abuse
        • F19.10 Other psychoactive substance abuse, uncomplic...
        • F19.11 Other psychoactive substance abuse, in remiss...
        • F19.12 Other psychoactive substance abuse with intox...
          • F19.120 Other psychoactive substance abuse with intox...
          • F19.121 Other psychoactive substance abuse with intox...
          • F19.122 Other psychoactive substance abuse with intox...
          • F19.129 Other psychoactive substance abuse with intox...
        • F19.14 Other psychoactive substance abuse with psych...
        • F19.15 Other psychoactive substance abuse with psych...
          • F19.150 Other psychoactive substance abuse with psych...
          • F19.151 Other psychoactive substance abuse with psych...
          • F19.159 Other psychoactive substance abuse with psych...
        • F19.16 Other psychoactive substance abuse with psych...
        • F19.17 Other psychoactive substance abuse with psych...
        • F19.18 Other psychoactive substance abuse with other...
          • F19.180 Other psychoactive substance abuse with psych...
          • F19.181 Other psychoactive substance abuse with psych...
          • F19.182 Other psychoactive substance abuse with psych...
          • F19.188 Other psychoactive substance abuse with other...
        • F19.19 Other psychoactive substance abuse with unspe...
      • F19.2 Other psychoactive substance dependence
        • F19.20 Other psychoactive substance dependence, unco...
        • F19.21 Other psychoactive substance dependence, in r...
        • F19.22 Other psychoactive substance dependence with ...
          • F19.220 Other psychoactive substance dependence with ...
          • F19.221 Other psychoactive substance dependence with ...
          • F19.222 Other psychoactive substance dependence with ...
          • F19.229 Other psychoactive substance dependence with ...
        • F19.23 Other psychoactive substance dependence with ...
          • F19.230 Other psychoactive substance dependence with ...
          • F19.231 Other psychoactive substance dependence with ...
          • F19.232 Other psychoactive substance dependence with ...
          • F19.239 Other psychoactive substance dependence with ...
        • F19.24 Other psychoactive substance dependence with ...
        • F19.25 Other psychoactive substance dependence with ...
          • F19.250 Other psychoactive substance dependence with ...
          • F19.251 Other psychoactive substance dependence with ...
          • F19.259 Other psychoactive substance dependence with ...
        • F19.26 Other psychoactive substance dependence with ...
        • F19.27 Other psychoactive substance dependence with ...
        • F19.28 Other psychoactive substance dependence with ...
          • F19.280 Other psychoactive substance dependence with ...
          • F19.281 Other psychoactive substance dependence with ...
          • F19.282 Other psychoactive substance dependence with ...
          • F19.288 Other psychoactive substance dependence with ...
        • F19.29 Other psychoactive substance dependence with ...
      • F19.9 Other psychoactive substance use, unspecified...
        • F19.90 Other psychoactive substance use, unspecified...
        • F19.92 Other psychoactive substance use, unspecified...
          • F19.920 Other psychoactive substance use, unspecified...
          • F19.921 Other psychoactive substance use, unspecified...
          • F19.922 Other psychoactive substance use, unspecified...
          • F19.929 Other psychoactive substance use, unspecified...
        • F19.93 Other psychoactive substance use, unspecified...
          • F19.930 Other psychoactive substance use, unspecified...
          • F19.931 Other psychoactive substance use, unspecified...
          • F19.932 Other psychoactive substance use, unspecified...
          • F19.939 Other psychoactive substance use, unspecified...
        • F19.94 Other psychoactive substance use, unspecified...
        • F19.95 Other psychoactive substance use, unspecified...
          • F19.950 Other psychoactive substance use, unspecified...
          • F19.951 Other psychoactive substance use, unspecified...
          • F19.959 Other psychoactive substance use, unspecified...
        • F19.96 Other psychoactive substance use, unspecified...
        • F19.97 Other psychoactive substance use, unspecified...
        • F19.98 Other psychoactive substance use, unspecified...
          • F19.980 Other psychoactive substance use, unspecified...
          • F19.981 Other psychoactive substance use, unspecified...
          • F19.982 Other psychoactive substance use, unspecified...
          • F19.988 Other psychoactive substance use, unspecified...
        • F19.99 Other psychoactive substance use, unspecified...
    F19.-
    )
The following code(s) above T43 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 T43:
  • S00-T88
    2018 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
    2018 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
Code History
ICD-10-CM Codes Adjacent To T43
T42.8X4D …… subsequent encounter
T42.8X4S …… sequela
T42.8X5 Adverse effect of antiparkinsonism drugs and other central muscle-tone depressants
T42.8X5A …… initial encounter
T42.8X5D …… subsequent encounter
T42.8X5S …… sequela
T42.8X6 Underdosing of antiparkinsonism drugs and other central muscle-tone depressants
T42.8X6A …… initial encounter
T42.8X6D …… subsequent encounter
T42.8X6S …… sequela
T43 Poisoning by, adverse effect of and underdosing of psychotropic drugs, not elsewhere classified
T43.0 Poisoning by, adverse effect of and underdosing of tricyclic and tetracyclic antidepressants
T43.01 Poisoning by, adverse effect of and underdosing of tricyclic antidepressants
T43.011 Poisoning by tricyclic antidepressants, accidental (unintentional)
T43.011A …… initial encounter
T43.011D …… subsequent encounter
T43.011S …… sequela
T43.012 Poisoning by tricyclic antidepressants, intentional self-harm
T43.012A …… initial encounter
T43.012D …… subsequent encounter
T43.012S …… sequela

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