2024 ICD-10-CM Diagnosis Code T45.512A

Poisoning by anticoagulants, intentional self-harm, initial encounter

ICD-10-CM Code:
T45.512A
ICD-10 Code for:
Poisoning by anticoagulants, intentional self-harm, init
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
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 primarily systemic and hematological agents, not elsewhere classified
        (T45)

T45.512A is a billable diagnosis code used to specify a medical diagnosis of poisoning by anticoagulants, intentional self-harm, initial encounter. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024.

T45.512A is an initial encounter code, includes a 7th character and should be used while the patient is receiving active treatment for a condition like poisoning by anticoagulants intentional self-harm. According to ICD-10-CM Guidelines an "initial encounter" doesn't necessarily means "initial visit". The 7th character should be used when the patient is undergoing active treatment regardless if new or different providers saw the patient over the course of a treatment. The appropriate 7th character codes should also be used even if the patient delayed seeking treatment for a condition.

Approximate Synonyms

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

  • Anticoagulant overdosage
  • Anticoagulant overdosage
  • Coumarin overdose
  • Coumarin overdose
  • Heparin overdose
  • Intentional coumarin overdose
  • Intentional coumarin poisoning
  • Intentional heparin overdose
  • Intentional heparin poisoning
  • Intentional pesticide product poisoning
  • Intentional pesticide product poisoning
  • Intentional phenindione poisoning
  • Intentional warfarin overdose
  • Intentional warfarin poisoning
  • Poisoning by heparin
  • Poisoning by heparin
  • Poisoning by phenindione
  • Poisoning caused by warfarin
  • Poisoning caused by warfarin
  • Warfarin overdosage

Clinical Classification

Clinical CategoryCCSR Category CodeInpatient Default CCSROutpatient Default CCSR
External cause codes: intent of injury, self-harmEXT021N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.
External cause codes: poisoning by drugEXT014N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.
Poisoning by drugs, initial encounterINJ022N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis.N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis.
Suicidal ideation/attempt/intentional self-harmMBD012Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis.Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis.

Clinical Information

  • Acenocoumarol

    a coumarin that is used as an anticoagulant. its actions and uses are similar to those of warfarin. (from martindale, the extra pharmacopoeia, 30th ed, p233)
  • Phenindione

    an indandione that has been used as an anticoagulant. phenindione has actions similar to warfarin, but it is now rarely employed because of its higher incidence of severe adverse effects. (from martindale, the extra pharmacopoeia, 30th ed, p234)
  • Phenprocoumon

    coumarin derivative that acts as a long acting oral anticoagulant.
  • Warfarin

    an anticoagulant that acts by inhibiting the synthesis of vitamin k-dependent coagulation factors. warfarin is indicated for the prophylaxis and/or treatment of venous thrombosis and its extension, pulmonary embolism, and atrial fibrillation with embolization. it is also used as an adjunct in the prophylaxis of systemic embolism after myocardial infarction. warfarin is also used as a rodenticide.

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 primarily systemic and hematological agents, not elsewhere classified (T45). Use the following options for the aplicable episode of care:

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

Convert T45.512A to ICD-9-CM

  • ICD-9-CM Code: 964.2 - Poisoning-anticoagulants
    Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.
  • ICD-9-CM Code: E950.4 - Poison-drug/medicin NEC
    Combination Flag - Multiple codes are needed to describe the source diagnosis code. Correct coding should be done based on contextual judgment.

Table of Drugs and Chemicals

The parent code T45.512 of the current diagnosis 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
AcenocoumarinT45.511T45.512T45.513T45.514T45.515T45.516
AcenocoumarolT45.511T45.512T45.513T45.514T45.515T45.516
AnisindioneT45.511T45.512T45.513T45.514T45.515T45.516
Anticoagulant NECT45.511T45.512T45.513T45.514T45.515T45.516
Anticoagulant NEC
  »Antagonist
T45.511T45.512T45.513T45.514T45.515T45.516
BishydroxycoumarinT45.511T45.512T45.513T45.514T45.515T45.516
BromindioneT45.511T45.512T45.513T45.514T45.515T45.516
CoumadinT45.511T45.512T45.513T45.514T45.515T45.516
Coumadin
  »rodenticide
T45.511T45.512T45.513T45.514T45.515T45.516
CoumarinT45.511T45.512T45.513T45.514T45.515T45.516
CoumetarolT45.511T45.512T45.513T45.514T45.515T45.516
CumetharolT45.511T45.512T45.513T45.514T45.515T45.516
DaniloneT45.511T45.512T45.513T45.514T45.515T45.516
Dicoumarol, dicoumarin, dicumarolT45.511T45.512T45.513T45.514T45.515T45.516
DiphenadioneT45.511T45.512T45.513T45.514T45.515T45.516
Diphenadione
  »rodenticide
T45.511T45.512T45.513T45.514T45.515T45.516
Drotrecogin alfaT45.511T45.512T45.513T45.514T45.515T45.516
Enoxaparin (sodium)T45.511T45.512T45.513T45.514T45.515T45.516
FluindioneT45.511T45.512T45.513T45.514T45.515T45.516
Heparin (sodium)T45.511T45.512T45.513T45.514T45.515T45.516
Heparin (sodium)
  »action reverser
T45.511T45.512T45.513T45.514T45.515T45.516
Heparin-fractionT45.511T45.512T45.513T45.514T45.515T45.516
Heparinoid (systemic)T45.511T45.512T45.513T45.514T45.515T45.516
Indandione (derivatives)T45.511T45.512T45.513T45.514T45.515T45.516
Indendione (derivatives)T45.511T45.512T45.513T45.514T45.515T45.516
NicoumaloneT45.511T45.512T45.513T45.514T45.515T45.516
PanwarfinT45.511T45.512T45.513T45.514T45.515T45.516
PhenindioneT45.511T45.512T45.513T45.514T45.515T45.516
PhenprocoumonT45.511T45.512T45.513T45.514T45.515T45.516
SintromT45.511T45.512T45.513T45.514T45.515T45.516
TioclomarolT45.511T45.512T45.513T45.514T45.515T45.516
WarfarinT45.511T45.512T45.513T45.514T45.515T45.516
Warfarin
  »rodenticide
T45.511T45.512T45.513T45.514T45.515T45.516
Warfarin
  »sodium
T45.511T45.512T45.513T45.514T45.515T45.516
XigrisT45.511T45.512T45.513T45.514T45.515T45.516
ZovantT45.511T45.512T45.513T45.514T45.515T45.516

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.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.