Toxic effect of cyanides, intentional self-harm, sequela

This code signifies the long-term, residual effects resulting from a deliberate act of self-poisoning with cyanide. It indicates that the acute phase of the cyanide toxicity has passed, and the patient is now experiencing chronic health issues directly attributable to that intentional exposure. These sequelae can range from neurological damage to organ dysfunction.

Apply this code when documenting conditions or symptoms that are a direct consequence of a past, intentional self-harm attempt involving cyanide. This would be used in follow-up encounters for patients recovering from such an event, where the current treatment addresses the chronic complications rather than the acute poisoning itself. It is appropriate when the patient's current presentation is a direct result of the prior cyanide ingestion.

• Always sequence this code after the code(s) for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a past intentional cyanide poisoning.
• Do not use this code for acute cyanide poisoning; instead, use the appropriate acute toxicity code.