Toxic effect of venom of black widow spider, undet, sequela

This code signifies a long-term or late-occurring health problem resulting from a black widow spider bite, where the intent (accidental, intentional self-harm, assault) of the exposure is not documented or cannot be determined. These sequelae can include persistent neurological symptoms, chronic pain, or other lasting complications that manifest after the acute phase of the envenomation has resolved.

Apply this code when a patient presents with a chronic condition or residual effect directly attributable to a black widow spider bite that occurred in the past. This is appropriate when the initial acute toxic effect has passed, and the current encounter addresses the lasting consequences, and the circumstances surrounding the bite are unknown.

• Always sequence this sequela code after the code for the specific residual condition being treated.
• Ensure documentation clearly links the current condition to a past black widow spider envenomation.
• Do not use for acute toxic effects; this code is exclusively for late effects.