Poisoning by unsp agents aff the GI sys, self-harm, subs

This code signifies a patient presenting for follow-up care related to a self-inflicted poisoning event involving an unknown substance that primarily impacted their digestive system. The initial acute phase of treatment has concluded, and the patient is now receiving ongoing management for the effects of the poisoning.

Use this code for subsequent encounters when a patient is being treated for complications, sequelae, or ongoing monitoring following an intentional self-harm poisoning by an unspecified gastrointestinal agent. This includes follow-up appointments for psychiatric evaluation, management of residual GI symptoms, or monitoring for long-term effects.

• Always ensure the "D" for subsequent encounter is appropriate; "A" for initial and "S" for sequela have distinct uses.
• Confirm documentation clearly states intentional self-harm and that the primary system affected was gastrointestinal.
• If the specific agent is later identified, a more precise code should be used for future encounters.