2022 ICD-10-CM Code T45.0X6

Underdosing of antiallergic and antiemetic drugs

Version 2021

Not Valid for Submission

ICD-10:T45.0X6
Short Description:Underdosing of antiallergic and antiemetic drugs
Long Description:Underdosing of antiallergic and antiemetic drugs

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)
      • Primarily systemic and hematological agents, NEC (T45)

T45.0X6 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of underdosing of antiallergic and antiemetic drugs. The code is not specific and is NOT valid for the year 2022 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.

Coding Guidelines

Underdosing refers to taking less of a medication than is prescribed by a provider or a manufacturer's instruction. Codes for underdosing should never be assigned as principal or first-listed codes. If a patient has a relapse or exacerbation of the medical condition for which the drug is prescribed because of the reduction in dose, then the medical condition itself should be coded.

The appropriate 7th character is to be added to each code from block Primarily systemic and hematological agents, NEC (T45). Use the following options for the aplicable episode of care:

Specific Coding for Underdosing of antiallergic and antiemetic drugs

Non-specific codes like T45.0X6 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 underdosing of antiallergic and antiemetic drugs:

  • BILLABLE CODE - Use T45.0X6A for initial encounter
  • BILLABLE CODE - Use T45.0X6D for subsequent encounter
  • BILLABLE CODE - Use T45.0X6S for sequela

Table of Drugs and Chemicals

The code T45.0X6 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
AcrivastineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
AlizaprideT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Antazolin (e)T45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Antiallergic NECT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Antiemetic drugT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
AntihistamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Antinausea drugT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
AntistineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Antivertigo drugT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
AstemizoleT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
AzatadineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
AzelastineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
BamipineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
BenadrylT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Benzhydramine (chloride)T45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
BenzquinamideT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Bisulepin (hydrochloride)T45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
BonineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
BromazineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
BromodiphenhydramineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
BrompheniramineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
BuclizineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
CarbinoxamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Cerium oxalateT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Cerous oxalateT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
CetirizineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
CetoximeT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
ChlorcyclizineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
ChloropyramineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
ChloropyrileneT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
ChlorothenT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
ChlorphenamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
ChlorpheniramineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
ChlorphenoxamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Chlor-TrimetonT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
CinnarizineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
ClemastineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
ClemizoleT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Clemizole
  »penicillin
T45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
ClorfenamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
CyclizineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
CyproheptadineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DeptropineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DexbrompheniramineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DexchlorpheniramineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DibenzheptropineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DifenidolT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DimenhydrinateT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DimetaneT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DimethindeneT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DimetindeneT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DiphenhydramineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DiphenidolT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DiphenylpyralineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DomperidoneT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DoxylamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
DramamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
EmbramineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
GranisetronT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
HomochlorcyclizineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
IsothipendylT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
KetotifenT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Levocabastine (hydrochloride)T45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
LoratidineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
MarezineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
MebhydrolinT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Meclizine (hydrochloride)T45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
MeclozineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
MephenhydramineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
MepyramineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
MethaphenileneT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
MethapyrileneT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
MetoclopramideT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
MoxastineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
NytolT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
OndansetronT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
OxatomideT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Percogesic [See Also: acetaminophen]T45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PeriactinT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PhenindamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PheniramineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PhenyltoloxamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PimethixeneT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PipamazineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PipoxizineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PiprinhydrinateT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PropiomazineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PyrathiazineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PyribenzamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PyrilamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
PyrrobutamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
RotoxamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
SetastineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Sleep-ezeT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
SominexT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
TerfenadineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
ThenyldiamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Thonzylamine (systemic)T45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
Thonzylamine (systemic)
  »mucosal decongestant
T45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
TiganT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
TranilastT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
TrimethobenzamideT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
TrimetonT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
TripelennamineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
TriprolidineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6
TritoqualineT45.0X1T45.0X2T45.0X3T45.0X4T45.0X5T45.0X6

Information for Patients


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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)