Toxic effect of venom of venomous lizard, undet, sequela

This code signifies a long-term or late-developing health problem resulting from exposure to the venom of an unspecified venomous lizard, excluding Gila monsters and Mexican beaded lizards. The initial acute toxic effects have resolved, but residual conditions or complications persist due to the envenomation. The specific circumstances of the exposure (accidental, intentional self-harm, assault) are not known.

Use this code when documenting a chronic condition, scar, organ damage, or other lasting sequela directly attributable to a venomous lizard bite where the specific lizard species is not Gila monster or Mexican beaded lizard, and the intent of the exposure is undetermined. This code is appropriate for follow-up encounters after the initial acute phase of envenomation has passed.

• Requires a seventh character "S" to indicate sequela, meaning the residual effect of a previous injury or disease.
• Do not use for acute envenomation; instead, refer to the appropriate acute toxic effect codes (T63.121-T63.124A).
• Always code the specific sequela (e.g., scar, chronic pain, organ damage) first, followed by this code as a secondary diagnosis to indicate the cause.