Toxic effect of contact w oth venomous fish, undet, sequela

This code describes the long-term or late effects resulting from an exposure to venom from a fish species other than those specifically classified (e.g., stingray, scorpionfish), where the intent of the exposure is unknown or cannot be determined. These sequelae manifest after the acute phase of the toxic effect has resolved.

Apply this code when documenting chronic conditions, permanent disabilities, or residual symptoms directly attributable to a past venomous fish contact. This is appropriate for follow-up encounters where the initial acute injury has passed, and the patient is being treated for the lasting consequences of the exposure.

• Always sequence this sequela code after the code for the specific residual condition being treated.
• Ensure documentation clearly links the current condition to a past venomous fish exposure.
• Only use "undetermined" when the intent (accidental, intentional self-harm, assault) cannot be definitively established from the medical record.