Poisoning by tricyclic antidepressants, assault, subs encntr

This code indicates a patient experienced an intentional overdose or poisoning specifically due to tricyclic antidepressants (TCAs), where the intent was to harm the individual. It signifies that the encounter for this condition is not the initial presentation but a subsequent visit for ongoing care related to the poisoning.

This code is appropriate for follow-up visits, such as medication management, psychiatric evaluation, or monitoring for lingering effects, after a patient has been initially treated for an assault-related TCA poisoning. It should be used when the patient is no longer in the acute phase of treatment but still receiving care for the sequelae of the event.

• Always use in conjunction with an external cause code (e.g., Y07.9XXD) to fully describe the circumstances of the assault.
• Ensure documentation clearly supports "assault" as the intent and "subsequent encounter" for the visit type.
• Distinguish from accidental poisoning (unintentional) or self-harm (suicide attempt) as these have different intent codes.