Poisoning by MAO inhib antidepressants, accidental, subs

This code signifies an accidental overdose or adverse reaction to monoamine oxidase inhibitor (MAOI) antidepressants during a follow-up visit. It indicates that the patient is receiving ongoing care for the initial poisoning event, which was unintentional.

Apply this code for subsequent encounters when a patient is being treated for complications, monitoring, or recovery from an accidental MAOI poisoning. This includes follow-up appointments after initial emergency treatment, or when managing lingering side effects.

• Ensure the encounter is for follow-up care related to the initial poisoning, not the initial treatment.
• Verify the poisoning was accidental and not intentional self-harm or assault.
• Confirm the substance involved was specifically an MAOI antidepressant.