Poisoning by MAO inhib antidepressants, undetermined, subs

This code signifies a poisoning event involving monoamine oxidase inhibitor (MAOI) antidepressants where the intent (accidental, intentional self-harm, assault) cannot be determined. It indicates that the patient is receiving follow-up care for the sequelae or ongoing management of this poisoning, not the initial acute treatment.

This code is appropriate for encounters after the initial treatment of an MAOI antidepressant poisoning when the circumstances surrounding the poisoning remain unclear. It would be used for patients returning for medication adjustments, monitoring for long-term effects, or follow-up appointments related to the poisoning event.

• Always assign an additional code for the specific manifestation(s) of the poisoning.
• Ensure documentation clearly states the undetermined intent and that this is a subsequent encounter.
• Do not use this code for initial encounters or if the intent of the poisoning is known (e.g., accidental, intentional self-harm).