2025 ICD-10-CM code T63.3

Toxic effect of venom of spider.

Use secondary code(s) from Chapter 20, External causes of morbidity (V01-Y99), to indicate the cause of injury. Use additional code to identify any retained foreign body, if applicable (Z18.-).

Medical necessity is established by the signs, symptoms, and severity of the reaction to the spider bite. Treatment should be appropriate for the specific situation.

The provider's responsibility is to document the details of the encounter, including the type of spider if known, the location of the bite, the symptoms experienced, and the treatment provided.

In simple words: This code represents the harmful effects caused by the venom of a spider.

Toxic effect of venom of spider. This code includes the bite or touch of a venomous spider.

Example 1: A patient presents to the emergency department with pain, swelling, and redness at the site of a spider bite. The provider identifies the spider as a black widow and administers antivenom., A patient is seen in the clinic after being bitten by a spider while gardening. The type of spider is unknown, but the patient reports localized pain and itching. The provider cleans the wound and prescribes a topical anti-itch cream., A child is brought to the urgent care center after being bitten by a spider on their hand. The bite area is swollen and painful. The child also exhibits symptoms of an allergic reaction, such as hives and difficulty breathing. The provider administers epinephrine and monitors the child for further complications.

Documentation should include the type of spider if known, the location and description of the bite, the symptoms experienced, the treatment provided, and any allergic reactions observed.

** Excludes1: birth trauma (P10-P15), obstetric trauma (O70-O71). Excludes2: ingestion of toxic animal or plant (T61.-, T62.-). When no intent is indicated, code to accidental. Undetermined intent is only for use when there is specific documentation in the record that the intent of the toxic effect cannot be determined.

  • Specialties:Emergency Medicine, Family Medicine, Pediatrics, Internal Medicine, Toxicology
  • Place of Service:Emergency Room - Hospital, Office, Inpatient Hospital, Urgent Care Facility, Outpatient Hospital, Telehealth Provided in Patient’s Home, Telehealth Provided Other than in Patient’s Home
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