2024 ICD-10-CM Diagnosis Code T42.3X4

Poisoning by barbiturates, undetermined

ICD-10-CM Code:
T42.3X4
ICD-10 Code for:
Poisoning by barbiturates, undetermined
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
      (T36-T50)
      • Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs
        (T42)

T42.3X4 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of poisoning by barbiturates, undetermined. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Poisoning by barbiturates, undetermined

Non-specific codes like T42.3X4 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for poisoning by barbiturates, undetermined:

  • Use T42.3X4A for initial encounter - BILLABLE CODE

  • Use T42.3X4D for subsequent encounter - BILLABLE CODE

  • Use T42.3X4S for sequela - BILLABLE CODE

Clinical Information

  • Barbital

    a long-acting barbiturate that depresses most metabolic processes at high doses. it is used as a hypnotic and sedative and may induce dependence. barbital is also used in veterinary practice for central nervous system depression.
  • Hexobarbital

    a barbiturate that is effective as a hypnotic and sedative.
  • Mephobarbital

    a barbiturate that is metabolized to phenobarbital. it has been used for similar purposes, especially in epilepsy, but there is no evidence mephobarbital offers any advantage over phenobarbital.
  • Pentobarbital

    a short-acting barbiturate that is effective as a sedative and hypnotic (but not as an anti-anxiety) agent and is usually given orally. it is prescribed more frequently for sleep induction than for sedation but, like similar agents, may lose its effectiveness by the second week of continued administration. (from ama drug evaluations annual, 1994, p236)
  • Phenobarbital

    a barbituric acid derivative that acts as a nonselective central nervous system depressant. it potentiates gamma-aminobutyric acid action on gaba-a receptors, and modulates chloride currents through receptor channels. it also inhibits glutamate induced depolarizations.
  • Secobarbital

    a barbiturate that is used as a sedative. secobarbital is reported to have no anti-anxiety activity.

Coding Guidelines

When coding a poisoning or reaction to the improper use of a medication (e.g., overdose, wrong substance given or taken in error, wrong route of administration), first assign the appropriate code from categories T36-T50. The poisoning codes have an associated intent as their 5th or 6th character (accidental, intentional self-harm, assault and undetermined. If the intent of the poisoning is unknown or unspecified, code the intent as accidental intent. The undetermined intent is only for use if the documentation in the record specifies that the intent cannot be determined. Use additional code(s) for all manifestations of poisonings.

The appropriate 7th character is to be added to each code from block Poisoning by, adverse effect of and underdosing of antiepileptic, sedative- hypnotic and antiparkinsonism drugs (T42). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Table of Drugs and Chemicals

The code is referenced in the Table of Drugs and Chemicals, this table contains a classification of drugs, industrial solvents, corrosive gases, noxious plants, pesticides, and other toxic agents.

According to ICD-10-CM coding guidelines it is advised to do not code directly from the Table of Drugs and Chemicals, instead always refer back to the Tabular List when doing the initial coding. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. It is important to use as many codes as necessary to specify all reported drugs, medicinal or chemical substances. If the same diagnosis code describes the causative agent for more than one adverse reaction, poisoning, toxic effect or underdosing, utilize the code only once.

Substance Poisoning
Accidental
(unintentional)
Poisoning
Accidental
(self-harm)
Poisoning
Assault
Poisoning
Undetermined
Adverse
effect
Underdosing
AgrypnalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
AllobarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
AllylisopropylmalonylureaT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
AllypropymalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
AlurateT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Amobarbital (sodium)T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
AmylobarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Amytal (sodium)T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
AprobarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
BarbenylT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
BarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Barbital
  »sodium
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
BarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Barbiturate NECT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Barbiturate NEC
  »with tranquilizer
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Barbiturate NEC
  »anesthetic (intravenous)
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
BrallobarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Butabarbital (sodium)T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
ButabarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
ButabarpalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
ButalbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
ButallylonalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
ButethalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Butisol (sodium)T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
ButobarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Butobarbital
  »sodium
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
ButobarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
CarbritalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
CyclobarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
CyclobarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
DelvinalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Diallylbarbituric acidT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
DiallymalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
DiemalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
DiethylT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Diethyl
  »barbituric acid
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Diethyl
  »carbamazine
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Diethyl
  »carbinol
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Diethyl
  »carbonate
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Diethyl
  »ether (vapor) [See Also: ether]
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Diethyl
  »oxide
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Diethyl
  »propion
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Diethyl
  »stilbestrol
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Diethyl
  »toluamide (nonmedicinal)
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Diethyl
  »toluamide (nonmedicinal)
    »medicinal
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
DifebarbamateT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
DormiralT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
EnhexymalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
EskabarbT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
EthobralT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
EtilfenT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
EtovalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
EunerylT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
EvipalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Evipal
  »sodium
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
EvipanT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Evipan
  »sodium
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
FebarbamateT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
FenobarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
GardenalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
GardepanylT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
GemonilT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
HeptabarbT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
HeptabarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
HeptabarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
HexemalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Hexethal (sodium)T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
HexobarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Hexobarbital
  »rectal
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Hexobarbital
  »sodium
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
IpralT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
LotusateT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
LuminalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
MeballymalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
MebaralT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
MebumalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
MedinalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
MedominT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
MephebarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
MephobarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
MetharbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
MethituralT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Methobarbital, methobarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
MethylhexabitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
MethylphenobarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
MysolineT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
NealbarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
NembutalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
NeonalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
NeravalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
NeravanT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
NeurobarbT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
NoptilT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
NunolT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Ortal (sodium)T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PentobarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Pentobarbital
  »sodium
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PentobarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PentymalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PernoctonT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PernostonT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Phanodorm, phanodornT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PhemitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PhenemalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PhenobalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PhenobarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Phenobarbital
  »with
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Phenobarbital
  »with
    »mephenytoin
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Phenobarbital
  »with
    »phenytoin
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Phenobarbital
  »sodium
T42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PhenobarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PhenonylT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PhenylmethylbarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
ProbarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
PropallylonalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
ProxibarbalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
QuinalbarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Quinalbarbitone sodiumT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
SecbutabarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
SecbutabarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
SecobarbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
SeconalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
SomonalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
SonerylT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
TalbutalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
VeramonT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
VeronalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
Vinbarbital, vinbarbitoneT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6
VinylbitalT42.3X1T42.3X2T42.3X3T42.3X4T42.3X5T42.3X6

Patient Education


Poisoning

A poison is any substance that is harmful to your body. You might swallow it, inhale it, inject it, or absorb it through your skin. Any substance can be poisonous if too much is taken. Poisons can include:

  • Prescription or over-the-counter medicines taken in doses that are too high
  • Overdoses of illegal drugs
  • Carbon monoxide from gas appliances
  • Household products, such as laundry powder or furniture polish
  • Pesticides
  • Indoor or outdoor plants
  • Metals such as lead and mercury

The effects of poisoning range from short-term illness to brain damage, coma, and death. To prevent poisoning it is important to use and store products exactly as their labels say. Keep dangerous products where children can't get to them. Treatment for poisoning depends on the type of poison. If you suspect someone has been poisoned, call your local poison control center at 1-800-222-1222 right away.


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.