Poisoning by unsp agents aff the GI sys, assault, subs

This code signifies a patient presenting for follow-up care related to a poisoning incident where the ingested substance, though unknown, primarily caused gastrointestinal symptoms. The poisoning was intentionally inflicted by another person.

This code is appropriate for subsequent encounters (e.g., follow-up appointments, medication adjustments, or monitoring for lingering effects) after the initial treatment of an assault-related, unspecified gastrointestinal poisoning. It should be used when the specific toxic agent is not identified.

• Ensure the documentation clearly indicates an "assault" as the intent of the poisoning.
• Verify that the encounter is for follow-up care, not the initial treatment.
• Only use when the specific toxic agent remains unknown; otherwise, a more specific poisoning code should be selected.