Toxic effect of carbon dioxide, self-harm, sequela

This code signifies the long-term or residual effects resulting from a deliberate act of self-harm involving carbon dioxide poisoning. It is used when the acute phase of the poisoning has passed, but the patient continues to experience health problems directly attributable to the toxic exposure. These sequelae can range from neurological damage to respiratory complications.

Apply this code when documenting a patient presenting with chronic conditions or lasting injuries that are a direct consequence of a past intentional carbon dioxide self-poisoning attempt. This includes follow-up encounters for conditions like persistent cognitive deficits, chronic respiratory issues, or other organ damage clearly linked to the prior toxic exposure. Do not use for the initial acute poisoning event.

• Always sequence this code after the codes for the specific sequelae being treated.
• Ensure documentation clearly links the current condition to the past carbon dioxide self-harm.
• This "S" seventh character indicates sequela, meaning the residual effect of a past injury or disease.