Toxic effect of venom

This code signifies the adverse systemic effects resulting from exposure to venomous substances, typically from bites or stings. It covers the toxicological response of the body to the venom, rather than the bite or sting itself. This can range from mild localized reactions to severe systemic poisoning affecting multiple organ systems.

Use this code when documentation clearly indicates a patient is experiencing symptoms or conditions directly attributable to the toxic properties of venom. This applies to reactions from snake bites, spider bites, scorpion stings, or marine animal envenomation. Supporting documentation should detail the source of the venom and the resulting toxic effects.

• Always code the specific type of bite or sting (e.g., E905.0 for venomous snake bite) as an external cause code in addition to this code.
• Do not use for allergic reactions to insect stings (e.g., anaphylaxis), which are coded separately.
• Sequence this code as a principal diagnosis when the toxic effect is the primary reason for the encounter, followed by codes for specific manifestations.