Toxic effect of rattlesnake venom, self-harm, sequela

This code signifies the long-term or late effects resulting from a rattlesnake envenomation that was deliberately self-inflicted. It indicates that the acute phase of the poisoning has passed, but the patient continues to experience residual health problems directly attributable to the venom.

Apply this code when documenting conditions such as chronic pain, tissue necrosis, organ damage, or neurological deficits that are a direct consequence of a self-poisoning attempt using rattlesnake venom. This code is appropriate for follow-up encounters after the initial treatment of the acute toxic effect has concluded.

• Requires a seventh character "S" to indicate sequela, meaning the late effects of the initial injury.
• Always sequence this code after the codes for the specific sequelae being treated (e.g., chronic kidney disease, nerve damage).
• Do not use for acute rattlesnake envenomation; this code is exclusively for the lasting complications.