Ciguatera fish poisoning, assault, sequela

This code signifies the long-term or residual effects resulting from ciguatera fish poisoning that was intentionally inflicted upon the patient. Ciguatera poisoning is caused by consuming fish contaminated with ciguatoxins, leading to a range of neurological, gastrointestinal, and cardiovascular symptoms. The "sequela" indicates that the acute phase of the poisoning has passed, and the patient is now experiencing persistent complications.

Use this code when documenting chronic or lasting health problems directly attributable to a past episode of ciguatera fish poisoning that was determined to be an assault. This would include ongoing neurological issues like paresthesia, fatigue, or temperature dysregulation, or persistent gastrointestinal complaints. It is appropriate for follow-up encounters where the sequelae are being managed.

• Requires a seventh character 'S' to indicate sequela, as specified in the code.
• Always sequence this code after the code(s) describing the specific sequela being treated (e.g., a code for chronic neuropathy).
• Ensure documentation clearly links the current condition to a past ciguatera poisoning and specifies the "assault" external cause.