Poisoning by antithrombotic drugs, accidental, subs

This code signifies an accidental overdose or adverse reaction to an antithrombotic medication, such as warfarin or heparin, that is causing harmful effects. The patient is receiving active treatment for the poisoning during this encounter, indicating it is not the initial presentation.

Apply this code when a patient presents for follow-up care, monitoring, or continued treatment of poisoning by an antithrombotic drug that was unintentionally ingested or administered. This includes scenarios where the patient is experiencing ongoing symptoms or complications from the initial accidental exposure.

• Ensure documentation clearly states the poisoning was accidental and that this is a subsequent encounter for treatment.
• Always code the specific antithrombotic drug if known, using an additional code from T38.8X.
• Do not use this code for adverse effects of correctly administered antithrombotic drugs; instead, use codes from T45.51.