Poisoning by tetracyclic antidepressants, self-harm, sequela

This code signifies the long-term effects or complications arising from a deliberate overdose of tetracyclic antidepressants. It indicates that the initial act of self-poisoning has resulted in persistent health issues requiring ongoing medical attention. This could include organ damage, neurological deficits, or chronic psychological sequelae directly attributable to the overdose.

Apply this code when documenting a patient's current condition that is a direct consequence of a past intentional self-harm event involving tetracyclic antidepressants. This is appropriate for follow-up visits addressing chronic kidney injury, persistent cardiac arrhythmias, or neurological damage that occurred as a result of the overdose, even if the acute poisoning event is long past. It should be used after the acute phase of the poisoning has resolved.

• Always sequence this code after the primary diagnosis describing the specific sequela (e.g., chronic kidney disease).
• Ensure documentation clearly links the current condition to the past intentional tetracyclic antidepressant overdose.
• Do not use this code for the initial acute poisoning event; instead, use the acute poisoning code with the appropriate seventh character.