Poisn by slctv seroton/norepineph reup inhibtr, undet, subs

This code signifies a patient presenting with adverse effects from selective serotonin and norepinephrine reuptake inhibitors (SNRIs) where the intent of the poisoning (e.g., accidental, intentional self-harm, assault) cannot be determined. This particular encounter is a follow-up visit for the ongoing management or sequelae of that poisoning event.

Use this code for subsequent encounters when a patient is receiving continued care for SNRI poisoning, and the medical record does not clearly specify whether the poisoning was accidental, intentional, or due to assault. This applies to situations like follow-up appointments for organ damage, psychiatric evaluation, or ongoing symptom management related to the initial undetermined SNRI overdose.

• Always assign an additional code for any associated signs, symptoms, or manifestations of the poisoning.
• Ensure the documentation explicitly states "undetermined" intent for the poisoning to use this specific subcategory.
• Verify the encounter is indeed "subsequent" and not the initial encounter for the poisoning event.