Toxic effect of venom of oth spider, undetermined, init

This code signifies a patient presenting with symptoms resulting from exposure to the venom of a spider other than a black widow or brown recluse, where the specific type of spider is unknown. The "initial encounter" indicates this is the first time the patient is receiving active treatment for this particular toxic effect.

Apply this code when a patient presents with signs and symptoms of a spider bite, but the spider cannot be definitively identified as a black widow or brown recluse. This is appropriate for the initial visit where diagnosis and treatment for the envenomation are being established.

• Ensure documentation clearly states an unknown spider species (other than black widow/brown recluse) and the patient's initial presentation for treatment.
• Do not use if the spider is identified as a black widow (T63.31-) or brown recluse (T63.32-).
• Remember to append additional codes for specific symptoms or complications of the envenomation.