Toxic effect of unsp spider venom, assault, init encntr

This code signifies a harmful systemic reaction resulting from exposure to venom from an unidentified spider, where the exposure was intentionally inflicted by another person. The "initial encounter" designation indicates that the patient is receiving active treatment for the acute effects of the poisoning.

This code is appropriate for documenting the initial phase of care for a patient presenting with symptoms of spider envenomation where the specific spider species is unknown, and the patient reports being deliberately bitten by another individual. This would include emergency department visits, initial hospital admissions, or the first outpatient visit for treatment of the acute toxic effects.

• Ensure documentation clearly supports an "assault" as the intent of the envenomation.
• Only use the "A" (initial encounter) seventh character for the period of active treatment for the acute injury.
• If the specific spider is identified, a more precise code from the T63.3 category should be used.