Poisoning by opium, undetermined, subsequent encounter

This code signifies a case of poisoning due to opium where the intent (e.g., accidental, intentional self-harm, assault) cannot be determined. The patient is receiving follow-up care for the effects of this poisoning, such as monitoring for complications or continued treatment.

Apply this code when a patient presents for ongoing management or evaluation of opium poisoning, and the medical record explicitly states that the intent of the poisoning is unknown. This is appropriate for subsequent visits after the initial acute phase of treatment.

• Ensure documentation clearly states "undetermined" intent for the opium poisoning.
• Confirm the encounter is for follow-up care, not the initial acute treatment.
• Always sequence this code after any codes for the specific manifestations of the poisoning.