Toxic effect of venom of brown recluse spider, undet, sqla

This code signifies a long-term health problem or complication resulting from a brown recluse spider envenomation where the specific circumstances of the exposure are not documented. It indicates that the acute phase of the toxic effect has passed, but the patient continues to experience residual effects.

Use this code when a patient presents with a chronic condition, such as a non-healing ulcer, scar tissue, or persistent pain, directly attributable to a brown recluse spider bite that occurred in the past. It is appropriate when the initial encounter for the acute envenomation has already been coded and the current visit addresses the ongoing sequelae.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela (e.g., L98.49 for non-healing ulcer).
• Ensure documentation clearly links the current condition to a past brown recluse spider bite.
• The "S" at the end indicates a sequela code, meaning it's used for complications or conditions that are the late effects of an injury or illness.