Toxic effect of venom of N & S American snake, undet, sqla

This code signifies a long-term health problem or residual condition resulting from a toxic exposure to venom from a North or South American snake, excluding rattlesnakes, coral snakes, and other specified types. The original intent of the exposure (accidental, intentional self-harm, assault) is unknown or not documented. This code is used when the acute phase of the envenomation has passed, and the patient is now experiencing a lasting effect.

Use this code for patients presenting with chronic symptoms, disabilities, or permanent damage directly attributable to a past envenomation by an unspecified North or South American snake. This applies when the initial toxic event is no longer active, but its lasting impact is being treated or evaluated. Examples include chronic pain, nerve damage, or tissue necrosis requiring ongoing management due to the prior snakebite.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela being treated.
• Ensure documentation clearly links the current condition to a past snake envenomation.
• Only use the "undetermined" character when the intent of the exposure cannot be ascertained from the medical record.