Poisoning by diagnostic agents, accidental, sequela

This code signifies the long-term effects or complications arising from an accidental overdose or unintended exposure to a diagnostic agent. These are conditions that persist after the acute phase of the poisoning has resolved, such as chronic organ damage or neurological deficits.

Apply this code when a patient presents with a current condition directly attributable to a past, accidental poisoning by a substance used for diagnostic purposes (e.g., contrast media, radioactive tracers). This would be used for follow-up care or management of the residual effects, not for the initial acute poisoning event.

• Always sequence this code after the code(s) for the specific sequela being treated.
• Do not use this code for acute poisoning events; refer to the appropriate acute poisoning codes.
• Ensure documentation clearly links the current condition to a past accidental diagnostic agent poisoning.