Toxic effect of contact w unsp venomous animal, undet, subs

This code signifies a toxic reaction resulting from contact with an unidentified venomous animal, where the intent (accidental, intentional self-harm, assault) is not specified. It is used when the patient is receiving follow-up care for the initial injury, such as wound checks, medication adjustments, or monitoring for delayed effects.

Apply this code for subsequent encounters when a patient presents with ongoing symptoms or complications from an unknown venomous animal exposure. This includes situations where the specific animal responsible for the envenomation was never identified, and the encounter is not for the initial treatment.

• Ensure documentation clearly indicates a "subsequent encounter" for ongoing care related to the initial exposure.
• Only use this code when the specific venomous animal cannot be determined from the medical record.
• If the intent of the exposure is known (e.g., accidental, intentional self-harm), a more specific T-code with the appropriate seventh character should be used.