Poisoning by methadone, accidental (unintentional), init

This code signifies an adverse health event resulting from the unintentional ingestion, exposure, or overdose of methadone. It indicates that the patient experienced poisoning due to an accidental circumstance, rather than intentional self-harm or assault. This code is specifically for the initial presentation of the patient for this poisoning event.

Use this code when a patient presents to an emergency department, clinic, or hospital for the first time due to accidental methadone poisoning. This includes scenarios where a patient mistakenly takes too much methadone, takes someone else's methadone by accident, or is unintentionally exposed to the drug. It applies to the initial evaluation and treatment of the acute poisoning.

• Ensure documentation clearly states the methadone poisoning was accidental and this is the patient's first encounter for this specific event.
• Do not use this code for intentional overdose (suicide attempt) or poisoning due to therapeutic use.
• Always sequence this code first, followed by codes for any associated manifestations of the poisoning.