2020 ICD-10-CM Diagnosis Code T45.521D

Poisoning by antithrombotic drugs, accidental (unintentional), subsequent encounter

    2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
  • T45.521D is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • Short description: Poisoning by antithrombotic drugs, accidental, subs
  • The 2020 edition of ICD-10-CM T45.521D became effective on October 1, 2019.
  • This is the American ICD-10-CM version of T45.521D - other international versions of ICD-10 T45.521D may differ.
The following code(s) above T45.521D contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to T45.521D:
  • S00-T88
    2020 ICD-10-CM Range S00-T88

    Injury, poisoning and certain other consequences of external causes

    Note
    • Use secondary code(s) from Chapter 20, External causes of morbidity, to indicate cause of injury. Codes within the T section that include the external cause do not require an additional external cause code
    Type 1 Excludes
    Use Additional
    • code to identify any retained foreign body, if applicable (Z18.-)
    Injury, poisoning and certain other consequences of external causes
  • T36-T50
    2020 ICD-10-CM Range T36-T50

    Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances

    Code First
    • , for adverse effects, the nature of the adverse effect, such as:
    • adverse effect NOS (T88.7)
    • aspirin gastritis (K29.-)
    • blood disorders (D56-D76)
    • contact dermatitis (L23-L25)
    • dermatitis due to substances taken internally (L27.-)
    • nephropathy (N14.0-N14.2)
    Includes
    • adverse effect of correct substance properly administered
    • poisoning by overdose of substance
    • poisoning by wrong substance given or taken in error
    • underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed
    Note
    • The drug giving rise to the adverse effect should be identified by use of codes from categories T36-T50 with fifth or sixth character 5.
    Type 1 Excludes
    • toxic reaction to local anesthesia in pregnancy (O29.3-)
    Type 2 Excludes
    • abuse and dependence of psychoactive substances (F10-F19)
    • abuse of non-dependence-producing substances (F55.-)
    • drug reaction and poisoning affecting newborn (P00-P96)
    • pathological drug intoxication (inebriation) (F10-F19)
    Use Additional
    • code(s) to specify:
    • manifestations of poisoning
    • underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9)
    • underdosing of medication regimen (Z91.12-, Z91.13-)
    Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
  • T45.52
    ICD-10-CM Diagnosis Code T45.52

    Poisoning by, adverse effect of and underdosing of antithrombotic drugs

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Poisoning by, adverse effect of and underdosing of antiplatelet drugs
    Type 2 Excludes
    • poisoning by, adverse effect of and underdosing of aspirin (T39.01-)
    • poisoning by, adverse effect of and underdosing of acetylsalicylic acid (T39.01-)
    Poisoning by, adverse effect of and underdosing of antithrombotic drugs
  • T45.521
    ICD-10-CM Diagnosis Code T45.521

    Poisoning by antithrombotic drugs, accidental (unintentional)

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Applicable To
    • Poisoning by antithrombotic drug NOS
    Poisoning by antithrombotic drugs, accidental (unintentional)
Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
  • T45.521D is considered exempt from POA reporting.
ICD-10-CM T45.521D is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 949 Aftercare with cc/mcc
  • 950 Aftercare without cc/mcc

Convert T45.521D to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
ICD-10-CM Codes Adjacent To T45.521D
T45.515A …… initial encounter
T45.515D …… subsequent encounter
T45.515S …… sequela
T45.516 Underdosing of anticoagulants
T45.516A …… initial encounter
T45.516D …… subsequent encounter
T45.516S …… sequela
T45.52 Poisoning by, adverse effect of and underdosing of antithrombotic drugs
T45.521 Poisoning by antithrombotic drugs, accidental (unintentional)
T45.521A …… initial encounter
T45.521D …… subsequent encounter
T45.521S …… sequela
T45.522 Poisoning by antithrombotic drugs, intentional self-harm
T45.522A …… initial encounter
T45.522D …… subsequent encounter
T45.522S …… sequela
T45.523 Poisoning by antithrombotic drugs, assault
T45.523A …… initial encounter
T45.523D …… subsequent encounter
T45.523S …… sequela
T45.524 Poisoning by antithrombotic drugs, undetermined

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.