Toxic effect of rattlesnake venom, undetermined, subs encntr

This code signifies a toxic reaction to rattlesnake venom where the intent (accidental, intentional self-harm, assault) cannot be determined. It is used for encounters following the initial treatment, indicating ongoing care for the effects of the envenomation.

Apply this code for follow-up visits, rehabilitation, or long-term management of complications arising from an undetermined rattlesnake bite. This includes situations where the patient is receiving continued medical attention for tissue damage, coagulopathy, or other systemic effects after the initial acute phase.

• Requires a seventh character of "D" for subsequent encounter.
• Do not use for the initial encounter; a different seventh character would be appropriate.
• Ensure documentation clearly states the undetermined intent of the bite.