Poisoning by unsp psychodysleptics, assault, subs encntr

This code indicates a patient presenting for follow-up care or sequelae related to poisoning by an unspecified hallucinogenic substance, where the poisoning was intentionally inflicted by another person. The specific type of hallucinogen is not documented.

Use this code for subsequent encounters when a patient is being treated for complications, long-term effects, or ongoing management stemming from an assault involving an unknown hallucinogen. This includes follow-up appointments for psychiatric evaluation, organ damage, or other persistent health issues directly attributable to the poisoning.

• Requires external cause code (X92-Y09) to fully describe the assault.
• Do not use for initial encounters; a different 7th character (A) would be appropriate for initial treatment.
• Ensure documentation clearly supports "subsequent encounter" and "assault" as the intent.