Toxic effect of chlorine gas, intentional self-harm, sequela

This code signifies the long-term or residual health problems resulting from a deliberate act of self-harm involving chlorine gas. These sequelae can include chronic respiratory issues, neurological damage, or persistent psychological effects that manifest after the acute phase of the poisoning has resolved.

Apply this code when documenting conditions that are a direct consequence of a past intentional chlorine gas exposure, and these conditions are still present and being treated. This would be used in follow-up encounters for patients experiencing chronic lung disease, ongoing neurological deficits, or mental health disorders directly attributable to the self-inflicted poisoning.

• Always sequence this code after the codes for the specific sequelae being treated.
• Ensure documentation clearly links the current condition to the past intentional chlorine gas exposure.
• Do not use for acute poisoning; this code is exclusively for residual effects.