Toxic effect of chlorofluorocarbons, undetermined, sequela

This code signifies the long-term or residual effects resulting from exposure to chlorofluorocarbons (CFCs), where the intent of the exposure (e.g., accidental, intentional self-harm, assault) cannot be determined. These sequelae represent chronic health problems that persist after the acute phase of the toxic exposure has passed.

Apply this code when documenting conditions such as persistent respiratory issues, neurological deficits, or organ damage that are directly attributed to past CFC exposure, and the original circumstances of the exposure are unknown or unspecifiable. This is appropriate for follow-up encounters addressing these chronic manifestations.

• Always use a sequela code (7th character 'S') for conditions that are residual effects of a past toxic event.
• Ensure documentation clearly links the current condition to a previous CFC exposure, even if the original intent is undetermined.
• Do not use this code for acute toxic effects; those require an acute phase code.