ICD-10 Code T42.4X6

Underdosing of benzodiazepines

Version 2019 Replaced Code Non-Billable Code Underdosing
ICD-10:T42.4X6
Short Description:Underdosing of benzodiazepines
Long Description:Underdosing of benzodiazepines

Not Valid for Submission

ICD-10 T42.4X6 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of underdosing of benzodiazepines. The code is NOT valid for the year 2019 for the submission of HIPAA-covered transactions.

Consider the following ICD-10 codes with a higher level of specificity:

  • T42.4X6A - Underdosing of benzodiazepines, initial encounter
  • T42.4X6D - Underdosing of benzodiazepines, subsequent encounter
  • T42.4X6S - Underdosing of benzodiazepines, sequela

Deleted Code

This code was deleted in the 2019 ICD-10 code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2018. This code was replaced for the FY 2019 (October 1, 2018 - September 30, 2019).

  • K59.03 - Drug induced constipation

Code Classification

  • Injury, poisoning and certain other consequences of external causes (S00–T98)
    • Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances (T36-T50)
      • Antiepileptic, sedative- hypnotic and antiparkinsonism drugs (T42)

Information for Medical Professionals

Diagnostic Related Groups

The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC). The diagnosis code T42.4X6 is grouped in the following groups for version MS-DRG V36.0 applicable from 10/01/2018 through 09/30/2019.

  • 949 - AFTERCARE WITH CC/MCC
  • 949 - AFTERCARE WITH CC/MCC
  • 950 - AFTERCARE WITHOUT CC/MCC
  • 950 - AFTERCARE WITHOUT CC/MCC

Table of Drugs and Chemicals

The code T42.4X6 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. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. Use as many codes as necessary to describe all reported drugs, medicinal or chemical substances.

Substance Poisoning
Accidental
(unintentional)
Poisoning
Accidental
self-harm
Poisoning
Assault
Poisoning
Undetermined
Adverse
effect
Underdosing
AlprazolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
BentazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
BenzodiapinT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
Benzodiazepine NECT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
BromazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
BrotizolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
CamazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
CarpipramineT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
ChlordiazepoxideT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
ClobazamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
ClonazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
Clorazepate (dipotassium)T42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
ClotiazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
CloxazolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
ClozapineT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
DalmaneT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
DelorazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
DiazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
EstazolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
EtizolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
FludiazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
FlunitrazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
FlurazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
FlutazolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
FlutoprazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
HalazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
HaloxazolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
KetazolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
LibriumT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
LoprazolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
LorazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
LormetazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
MedazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
MexazolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
MidazolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
NimetazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
NitrazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
NordazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
OxazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
OxazolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
PerlapineT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
PinazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
PrazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
QuazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
RohypnolT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
SeraxT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
TemazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
TetrazepamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
TofisopamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
TranxeneT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
TriazolamT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6
ValiumT42.4X1T42.4X2T42.4X3T42.4X4T42.4X5T42.4X6

Information for Patients


Medication Errors

Medicines treat infectious diseases, prevent problems from chronic diseases, and ease pain. But medicines can also cause harmful reactions if not used correctly. Errors can happen in the hospital, at the health care provider's office, at the pharmacy, or at home. You can help prevent errors by

  • Knowing your medicines. When you get a prescription, ask the name of the medicine and check to make sure that the pharmacy gave you the right medicine. Make sure that you understand how often you should take the medicine and how long you should take it.
  • Keeping a list of medicines.
    • Write down all of the medicines that you are taking, including the names of your medicines, how much you take, and when you take them. Make sure to include any over-the-counter medicines, vitamins, supplements, and herbs that you take.
    • List the medicines that you are allergic to or that have caused you problems in the past.
    • Take this list with you every time you see a health care provider.
  • Reading medicine labels and following the directions. Don't just rely on your memory - read the medication label every time. Be especially careful when giving medicines to children.
  • Asking questions. If you don't know the answers to these questions, ask your health care provider or pharmacist:
    • Why am I taking this medicine?
    • What are the common side effects?
    • What should I do if I have side effects?
    • When should I stop this medicine?
    • Can I take this medicine with the other medicines and supplements on my list?
    • Do I need to avoid certain foods or alcohol while taking this medicine?

Food and Drug Administration

  • 6 Tips to Avoid Medication Mistakes (Food and Drug Administration)
  • How and when to get rid of unused medicines (Medical Encyclopedia)
  • Keeping your medications organized (Medical Encyclopedia)
  • Medication safety during your hospital stay (Medical Encyclopedia)
  • Medication safety: Filling your prescription (Medical Encyclopedia)
  • Storing your medicines (Medical Encyclopedia)
  • Taking medicine at home - create a routine (Medical Encyclopedia)

[Read More]

ICD-10 Footnotes

General Equivalence Map Definitions
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Approximate Flag - The approximate flag is on, indicating that the relationship between the code in the source system and the code in the target system is an approximate equivalent.
  • No Map Flag - The no map flag indicates that a code in the source system is not linked to any code in the target system.
  • Combination Flag - The combination flag indicates that more than one code in the target system is required to satisfy the full equivalent meaning of a code in the source system.