Toxic effect of venom of other spider, undetermined, sequela

This code signifies a long-term or late-developing health problem resulting from an undetermined type of spider venom exposure. The initial acute toxic effects have resolved, but a residual condition, injury, or complication persists. This indicates that the specific spider species responsible for the venom is not known.

Use this code when documenting a chronic condition or permanent sequela directly attributable to a spider bite where the specific spider type could not be identified. This applies to situations where the patient presents for treatment of a lasting effect, such as chronic pain, scarring, or neurological deficits, long after the initial bite and acute toxicity have passed.

• Requires a seventh character "S" to indicate sequela.
• Ensure documentation clearly links the current condition to a past, undetermined spider bite.
• Do not use for acute or subacute toxic effects; those require different seventh characters.