Poisoning by antithrombotic drugs, undetermined, init encntr

This code signifies an adverse event resulting from exposure to antithrombotic medications, where the intent of the exposure (e.g., accidental, intentional self-harm, assault) cannot be determined. The patient is in the initial phase of receiving active treatment for the poisoning.

Use this code when a patient presents with signs and symptoms of antithrombotic drug toxicity, and the medical record does not clearly specify whether the exposure was accidental, intentional, or due to assault. This code is appropriate for the first encounter where the poisoning is being evaluated and treated.

• Always assign an additional code for the specific antithrombotic drug involved, if known.
• Ensure documentation clearly supports "undetermined" intent; otherwise, a more specific intent code (e.g., accidental, intentional self-harm) should be used.
• The "A" seventh character indicates an initial encounter for active treatment of the poisoning. Subsequent encounters would use "D" or "S".