Toxic effect of tetrachloroethylene, undetermined, sequela

This code signifies the long-term or residual effects resulting from a past exposure to tetrachloroethylene, where the intent of the exposure (e.g., accidental, intentional self-harm, assault) cannot be determined. These sequelae represent chronic health problems directly attributable to the prior toxic effect of this chemical.

Apply this code when documenting a patient presenting with persistent health issues, such as neurological deficits, organ damage, or dermatological conditions, that are definitively linked to a previous tetrachloroethylene poisoning of unknown intent. This code is appropriate for follow-up encounters addressing these chronic complications, not the initial acute poisoning.

• Always sequence this code after the code(s) for the specific sequela(e) being treated.
• Ensure documentation clearly establishes a causal link between the tetrachloroethylene exposure and the current condition.
• Do not use this code for acute poisoning; refer to the appropriate acute toxic effect codes for initial encounters.