Toxic effect of venom of hornets, undetermined, subs encntr

This code signifies a toxic reaction to hornet venom where the intent (e.g., accidental, intentional self-harm) is not documented or cannot be determined. It is used when the patient is receiving follow-up care for the initial toxic effect, such as managing persistent symptoms or complications.

Apply this code for patients presenting for ongoing treatment of symptoms or complications arising from a hornet sting, when the circumstances surrounding the sting are unknown or unspecified in the medical record. This includes situations where a patient is seen for a wound infection, allergic reaction management, or other sequelae from the initial envenomation.

• Always assign an additional code for any specific manifestations or complications of the toxic effect, such as anaphylactic shock or cellulitis.
• Ensure the "D" seventh character is appropriate for subsequent encounters; use "A" for initial encounters and "S" for sequelae.
• Verify documentation clearly indicates the venom source was a hornet and that the intent is undetermined.