Poisoning by MAO inhib antidepressants, assault, init

This code signifies a patient presenting with adverse effects from monoamine oxidase inhibitor (MAOI) antidepressants due to an intentional act of harm by another person. The patient is in the initial phase of treatment for this poisoning.

Apply this code when documenting a patient encounter where MAOI poisoning is confirmed and determined to be the result of an assault. This is appropriate for the first visit or admission related to managing the acute effects of the poisoning.

• Always sequence this code after the specific MAOI drug code (T43.1X-).
• Requires an external cause code (X92-Y09) to fully describe the assault.
• The 7th character "A" indicates an initial encounter for treatment of the poisoning.