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ICD-10-CM 2027 diagnosis code

T45.522Poisoning by antithrombotic drugs, intentional self-harm

Not billable — use a more specific codeRequires 7th character

T45.522 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it and add the required 7th character.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About T45.522

T45.522 is the ICD-10-CM diagnosis code for poisoning by antithrombotic drugs, intentional self-harm. It belongs to category T45 (poisoning by, adverse effect of and underdosing of primarily systemic and hematological agents, not elsewhere classified), block T36-T50 (poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances) and chapter 19 (injury, poisoning and certain other consequences of external causes). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within T45.52 (poisoning by, adverse effect of and underdosing of antithrombotic drugs), T45.522 is specifically for poisoning by antithrombotic drugs, intentional self-harm. Related codes cover poisoning by antithrombotic drugs, accidental (unintentional) (T45.521), poisoning by antithrombotic drugs, assault (T45.523), poisoning by antithrombotic drugs, undetermined (T45.524), adverse effect of antithrombotic drugs (T45.525) and underdosing of antithrombotic drugs (T45.526).

Codes in this range require a 7th character: A for initial encounter, D for subsequent encounter and S for sequela. Use placeholder "X" characters to fill any empty positions before the 7th character.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

7th character

The appropriate 7th character is to be added to each code from category T45

Notes that apply from higher levels

Instructions written at a parent level also apply to T45.522.

› From T45.52 Poisoning by, adverse effect of and underdosing of antithrombotic drugs
Excludes2
  • poisoning by, adverse effect of and underdosing of aspirin (T39.01-)
  • poisoning by, adverse effect of and underdosing of acetylsalicylic acid (T39.01-)

Broader instructions also apply from T36-T50 Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances and Chapter 19: Injury, poisoning and certain other consequences of external causes.

Table of Drugs & Neoplasms entries

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about T45.522

Is T45.522 billable?

No. T45.522 is a header code. Report one of its more specific subcodes instead.