Poisoning by methadone, assault, initial encounter

This code signifies a patient presenting with adverse effects from methadone, specifically when the methadone was administered or taken with malicious intent by another party. The "initial encounter" designation indicates that this is the first time the patient is receiving active treatment for this particular poisoning event.

Use this code for patients admitted to the emergency department or inpatient setting due to methadone toxicity resulting from an intentional act of harm by another person. This applies when the patient is in the acute phase of treatment for the poisoning.

• Always confirm the intent of the poisoning (assault) and the specific substance (methadone) from the medical record documentation.
• Ensure the "initial encounter" character is appropriate, meaning the patient is still receiving active treatment for the poisoning.
• Code any associated clinical manifestations or complications of the methadone poisoning separately.