2021 ICD-10-CM Code T42.6X5

Adverse effect of other antiepileptic and sedative-hypnotic drugs

Version 2021

Not Valid for Submission

T42.6X5 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of adverse effect of other antiepileptic and sedative-hypnotic drugs. The code is not specific and is NOT valid for the year 2021 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.

The ICD-10-CM code T42.6X5 might also be used to specify conditions or terms like acne of external chemical origin, adverse reaction to carbromal derivative, adverse reaction to glutethimide, adverse reaction to methaqualone, anticonvulsant drug-induced osteomalacia , barbiturate antiepileptic adverse reaction, etc.

ICD-10:T42.6X5
Short Description:Adverse effect of antiepileptic and sedative-hypnotic drugs
Long Description:Adverse effect of other antiepileptic and sedative-hypnotic drugs

Code Classification

Coding Guidelines

When coding an adverse effect of a drug that has been correctly prescribed and properly administered, assign the appropriate code for the nature of the adverse effect followed by the appropriate code for the adverse effect of the drug.

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

Specific Coding for Adverse effect of antiepileptic and sedative-hypnotic drugs

Non-specific codes like T42.6X5 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for adverse effect of antiepileptic and sedative-hypnotic drugs:

  • BILLABLE CODE - Use T42.6X5A for initial encounter
  • BILLABLE CODE - Use T42.6X5D for subsequent encounter
  • BILLABLE CODE - Use T42.6X5S for sequela

Approximate Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

Table of Drugs and Chemicals

The code T42.6X5 is included 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 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
AcecarbromalT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
AcetylcarbromalT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
AcetylpheneturideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
AllylisopropylacetylureaT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
AllyltribromideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ApronalideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
AvomineT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
BarbexacloneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
BeclamideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Beta-ChlorT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Bromal (hydrate)T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Bromide saltsT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
BromineT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Bromine
  »compounds (medicinal)
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Bromine
  »sedative
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Bromine
  »vapor
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
BromisovalT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
BromisovalumT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
BromoformT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
BromuralT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
BromvaletoneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Butylchloral hydrateT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Carbamate (sedative)T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Carbamate (sedative)
  »herbicide
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Carbamate (sedative)
  »insecticide
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
CarbromalT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ChloralT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Chloral
  »derivative
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Chloral
  »hydrate
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ChloralamideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ChloralodolT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ChlorbutolT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ChlorethiazolT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ChloretoneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ChlorhexadolT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ChlormethiazoleT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ChlormezanoneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ClomethiazoleT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Cloral betaineT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
DichloralphenozoneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Diethylsulfone-diethylmethaneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
DivalproexT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
DoridenT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
DormisonT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
EctylureaT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
EthchlorvynolT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
EthinamateT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
EtifoxineT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
GlutethimideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
HexapropymateT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Lactuca (virosa) (extract)T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
LactucariumT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Lettuce opiumT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
LevanilT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
LevopromeT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
MeparfynolT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Methaqualone (compound)T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
MethylparafynolT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Methylpentynol, methylpenthynolT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
MethyprylonT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
NiaprazineT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
NoctecT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
NoludarT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ParacetaldehydeT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ParaldehydeT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
PericlorT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
PetrichloralT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
PhenacemideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
PhenerganT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
PheneturideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
PhthalimidoglutarimideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
PlacidylT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
PrimidoneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ProgabideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Propionaldehyde (medicinal)T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
PyrithyldioneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
QuaaludeT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
SedormidT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
SerenesilT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
SomnosT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
SoporT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
SulfonalT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
SulfonethylmethaneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
SulfonmethaneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
SulthiameT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
SultiameT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
TetronalT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ToloxatoneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
TribromacetaldehydeT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
TribromomethaneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
TrichloroethanolT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Trichloroethyl phosphateT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
TriclofosT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
TrionalT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
TripleT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Triple
  »bromides
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Triple
  »carbonate
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Triple
  »vaccine
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Triple
  »vaccine
    »DPT
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Triple
  »vaccine
    »including pertussis
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Triple
  »vaccine
    »MMR
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ValerianT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Valerian
  »root
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Valerian
  »tincture
T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ValmidT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ValnoctamideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Valproate (sodium)T42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
Valproic acidT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ValpromideT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
VigabatrinT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
WelldormT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ZolpidemT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6
ZopicloneT42.6X1T42.6X2T42.6X3T42.6X4T42.6X5T42.6X6

Information for Patients


Drug Reactions

Also called: Side effects

Most of the time, medicines make our lives better. They reduce aches and pains, fight infections, and control problems such as high blood pressure or diabetes. But medicines can also cause unwanted reactions.

One problem is interactions, which may occur between

Interactions can change the actions of one or both drugs. The drugs might not work, or you could get side effects.

Side effects are unwanted effects caused by the drugs. Most are mild, such as a stomach aches or drowsiness, and go away after you stop taking the drug. Others can be more serious.

Drug allergies are another type of reaction. They can be mild or life-threatening. Skin reactions, such as hives and rashes, are the most common type. Anaphylaxis, a serious allergic reaction, is more rare.

When you start a new prescription or over-the-counter medication, make sure you understand how to take it correctly. Know which other medications and foods you need to avoid. Ask your health care provider or pharmacist if you have questions.


[Learn More in MedlinePlus]

Code History

  • 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 (First year ICD-10-CM implemented into the HIPAA code set)