Other shellfish poisoning, assault, sequela

This code signifies the long-term effects or complications arising from poisoning due to shellfish other than ciguatera, paralytic, neurotoxic, or amnesic types. The poisoning was intentionally inflicted upon the patient.

Apply this code when documenting a patient presenting with residual symptoms or conditions directly attributable to a past assault involving other specified shellfish poisoning. This code is appropriate for follow-up encounters after the acute phase of the poisoning and assault have resolved.

• Requires a seventh character of 'S' to indicate sequela, meaning the patient is experiencing a late effect of the poisoning.
• Always sequence this code after the codes for the specific sequelae or chronic conditions being treated.
• Do not use for acute poisoning or initial encounters for the assault; those would require different seventh characters.