Toxic effect of venom of hornets, assault, sequela

This code signifies the long-term or residual effects resulting from a toxic reaction to hornet venom, specifically when the exposure was due to an intentional assault. These sequelae can include chronic pain, neurological deficits, organ damage, or persistent allergic reactions that manifest after the initial acute phase of the envenomation has passed.

Apply this code when documenting a patient presenting with a current health condition directly attributable to a hornet venom assault that occurred in the past. This is appropriate for follow-up visits where the focus is on managing the lasting complications rather than the acute envenomation itself.

• Always use this code as a secondary diagnosis, following the code for the specific sequela being treated (e.g., chronic urticaria, peripheral neuropathy).
• Ensure documentation clearly states the hornet venom exposure was an assault and that the current condition is a direct consequence of that event.
• Do not use for acute toxic effects; refer to the appropriate acute T63.453_ code for initial encounters.