Poisoning by antithrombotic drugs, undetermined, sequela

This code signifies a long-term health problem or complication resulting from an antithrombotic drug poisoning where the intent (accidental, intentional self-harm, assault) cannot be determined. It indicates that the acute phase of the poisoning has passed, and the patient is now experiencing residual effects directly attributable to the past exposure.

Use this code when documenting a patient presenting with a chronic condition, organ damage, or other lasting sequelae that are definitively linked to a prior antithrombotic drug poisoning of unknown intent. This applies to follow-up encounters for conditions like persistent coagulopathy, organ dysfunction, or neurological deficits that developed as a consequence of the poisoning.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic kidney disease, cerebral infarction).
• Ensure documentation clearly links the current condition to the past antithrombotic poisoning and specifies the undetermined intent.
• Do not use this code for acute poisoning events; use the appropriate acute poisoning code with the 7th character "A" (initial encounter) or "D" (subsequent encounter).