Toxic effect of petroleum products, undetermined, sequela

This code signifies a long-term health problem or complication arising from a past exposure to petroleum products, where the intent of the exposure (e.g., accidental, intentional self-harm, assault) is unknown. It indicates that the acute toxic effects have resolved, but residual issues related to the poisoning persist.

Apply this code when documenting chronic conditions, disabilities, or other lasting health consequences directly attributable to a prior petroleum product poisoning, and the circumstances surrounding the original exposure were never determined. This is appropriate for follow-up encounters addressing these sequelae.

• Always use a seventh character of "S" for sequela when coding residual effects of a past toxic event.
• Do not use this code for acute poisoning; it is exclusively for long-term complications.
• Code any specific manifestations of the sequela (e.g., chronic respiratory issues, neurological damage) in addition to this code.