Toxic effect of venom of black widow spider, self-harm, init

This code signifies the adverse systemic effects resulting from a black widow spider envenomation that was deliberately self-inflicted. The patient is experiencing the initial phase of treatment for these toxic effects, which can include muscle cramps, pain, nausea, vomiting, and hypertension.

Apply this code when a patient presents with symptoms and signs of black widow spider envenomation, and the medical record clearly documents that the exposure was intentional self-harm. This code is appropriate for the initial hospital visit or encounter where the patient is first evaluated and treated for the poisoning.

• Always verify documentation explicitly states "intentional self-harm" for the black widow spider bite.
• Ensure this is the initial encounter for the poisoning; subsequent care would use a different encounter character.
• Code any specific symptoms or complications of the envenomation as secondary diagnoses.