Poisoning by tetracyclic antidepressants, assault, subs

This code signifies a patient presenting for follow-up care related to a toxic effect from tetracyclic antidepressants, where the poisoning was intentionally inflicted by another person. The patient is no longer in the acute phase of treatment but is receiving ongoing management for the sequelae of the assault.

This code is appropriate for documenting subsequent encounters for patients who were poisoned by tetracyclic antidepressants due to an assault. Examples include follow-up appointments for organ damage, psychiatric evaluation, or ongoing medication management after the initial acute treatment for the poisoning. It should be used when the patient is receiving care for the lasting effects or complications of the assault.

• Always ensure documentation clearly states the poisoning was due to an assault and that this is a subsequent encounter.
• Pair with external cause codes (e.g., Y07.-) to fully describe the circumstances of the assault.
• Do not use for initial acute treatment of the poisoning; reserve for follow-up care.