2025 ICD-10-CM code T63.413

Toxic effect of venom of centipedes and venomous millipedes resulting from an assault.

Always use additional codes to specify any other conditions present, such as allergic reactions (e.g., anaphylactic shock T78.2).Use a secondary code from Chapter 20 (External causes of morbidity) to identify the external cause of the injury (assault).If a foreign body remains, use code Z18.-.

Medical necessity is established by the documented assault leading to the centipede or millipede bite and the resulting toxic effects requiring medical intervention.The severity of symptoms and the need for treatment will support the medical necessity.

The clinical responsibility includes assessing the patient's condition, identifying the extent of the envenomation, administering appropriate treatment (e.g., antivenom, supportive care), managing symptoms (e.g., pain, respiratory distress, allergic reactions), and monitoring for complications. Documentation of the assault and the patient's response to treatment is essential.

IMPORTANT Additional codes may be necessary to specify the manifestations of the toxic effect (e.g., respiratory issues, allergic reactions).A secondary code from Chapter 20 (External causes of morbidity) should be used to identify the cause of injury (assault). If a foreign body is retained, code Z18.- should also be used.

In simple words: This code is used when someone is hurt by the venom from a centipede or millipede because someone else attacked them.The doctor will use this code along with other codes to describe the specific problems caused by the venom.

This code classifies the toxic effects resulting from the venom of centipedes and venomous millipedes when the cause is an assault.It includes the various manifestations of the poisoning, but additional codes should be used to specify these manifestations.The code should only be used when the assault is explicitly documented.Use additional codes for any retained foreign bodies (Z18.-) and associated manifestations (e.g., respiratory conditions J60-J70).Excludes ingestion of toxic animal or plant (T61.-, T62.-).

Example 1: A patient presents to the emergency department after being bitten by a centipede during a robbery. The patient exhibits localized swelling, pain, and mild respiratory distress.Codes T63.413 (toxic effect of venom, assault) andcodes for the respiratory distress are assigned., A patient is assaulted and bitten on the arm by a venomous millipede. They experience severe local pain, swelling, and an allergic reaction requiring epinephrine. T63.413 is used, along with codes to capture the systemic allergic reaction and the local effects of the bite., A patient is attacked in a park and sustains multiple bites from centipedes. They are experiencing significant pain, swelling, and nausea. The physician documents the assault and treats the patient with analgesics and antihistamines. The coder uses T63.413 and additional codes to capture symptoms and treatment.

Detailed documentation is required, including the mechanism of injury (centipede or millipede bite during an assault), the location and extent of the injury, symptoms experienced (e.g., pain, swelling, respiratory distress, allergic reactions), treatment administered (e.g., antivenom, supportive care), and the patient's response to treatment.

** This code is specific to assault-related envenomation.Accidental or self-inflicted bites should use the appropriate T63.41x codes.

  • Payment Status: Active
  • Specialties:Emergency Medicine, Toxicology, Occupational Medicine
  • Place of Service:Emergency Room - Hospital, Office, Urgent Care Facility
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