Toxic effect of venom of other snake, undetermined, sequela

This code signifies a long-term or late-onset health problem resulting from exposure to the venom of an unspecified snake, where the specific type of snake is not documented. It indicates that the initial toxic effects have resolved, but a residual condition or complication persists. This could include chronic pain, neurological deficits, or tissue damage that manifests after the acute phase of envenomation.

Apply this code when a patient presents with a current health issue definitively linked to a past, unspecified snakebite envenomation, and the acute phase of the poisoning has concluded. This is appropriate for follow-up encounters addressing chronic complications or sequelae that developed as a direct result of the venom's toxic effects. Do not use for acute envenomation or for bites from specific snake types.

• Always assign this code as a secondary diagnosis, following the code for the specific sequela (e.g., chronic kidney disease, neuropathy).
• Ensure documentation clearly links the current condition to a past, unspecified snake envenomation.
• Verify that the "S" seventh character is appropriate for a sequela, indicating a complication or condition arising as a direct result of the initial injury or illness.