Toxic eff of cntct w oth venom marine animals, undet, subs

This code signifies a toxic reaction resulting from contact with a venomous marine animal, other than those specifically classified (e.g., jellyfish, stingrays), where the intent (accidental, intentional self-harm, assault) cannot be determined. The "subsequent encounter" indicator means this code is used for follow-up care after the initial treatment of the toxic effect.

Apply this code when a patient presents for ongoing management, monitoring, or treatment of complications arising from a marine animal envenomation, and the specific animal is not otherwise classified. This includes situations where the patient is seen for wound care, allergic reactions, or systemic effects days or weeks after the initial exposure, and the circumstances of the contact are unclear.

• Always assign an external cause code (V90-V91) in conjunction with this code to fully describe the circumstances of the injury.
• Ensure documentation clearly supports that this is a subsequent encounter, not the initial visit for the toxic effect.
• If the specific venomous marine animal is known and has a more specific code (e.g., jellyfish, stingray), use that code instead.