Toxic effect of gases, fumes and vapors, self-harm, sequela

This code signifies a long-term health problem or complication resulting from a deliberate act of self-poisoning using a specific gas, fume, or vapor other than those explicitly classified elsewhere. These sequelae are persistent conditions that arise after the acute phase of the toxic exposure has passed.

Apply this code when documenting chronic respiratory issues, neurological damage, or other lasting organ dysfunction directly attributable to a past intentional self-harm event involving a specified gas, fume, or vapor. This code is appropriate for follow-up encounters addressing these residual effects, not the initial acute poisoning.

• This code requires a seventh character "S" for sequela, indicating a late effect.
• Always code the sequela (the residual condition) first, followed by this code to indicate the cause.
• Ensure the medical record clearly documents the intentional nature of the self-harm and the specific type of gas, fume, or vapor involved.