Toxic effect of venom of caterpillars, accidental, subs

This code signifies a patient presenting for follow-up care related to a toxic reaction caused by accidental contact with caterpillar venom. The initial injury has already been treated, and the patient is now being seen for ongoing management, monitoring of symptoms, or addressing residual effects.

Apply this code when a patient returns for a subsequent visit after an initial encounter for a caterpillar venom exposure. This includes scenarios such as wound checks, management of persistent rash or swelling, or addressing systemic symptoms that are resolving or require continued monitoring.

• Ensure the encounter is clearly documented as follow-up care for a previously treated caterpillar envenomation.
• Verify the documentation specifies the exposure was accidental or unintentional.
• Always pair with an external cause code (X23.-) to specify the type of contact and the circumstances.