Spider Bite ICD-10-CM Codes

What ICD-10 Codes are Used for Spider Bites?

The International Classification of Diseases, Tenth Revision (ICD-10), is a systematic coding system used by healthcare professionals worldwide to classify and code all diagnoses, symptoms, and procedures. It includes specific codes for spider bites among its many conditions. Here are six commonly used codes related to spider bites:

1. W57.XXXA: This code is utilized when a patient has been bitten or stung by nonvenomous insects and other arthropods during an initial encounter. It applies to cases where the insect causing the bite is not specified.
2. T63.3: This code represents the toxic effect of venom from a spider bite. This code applies to medical conditions arising from venomous spider bites, whether local or systemic.
3. T63.331A: This code is used specifically when the toxic effect is from the venom of a brown recluse spider, and the encounter is accidental (unintentional). The brown recluse spider is known for its potent venom that can cause significant local tissue damage.
4. T63.301A: This code signifies the toxic effect of unspecified spider venom during an accidental (unintentional) encounter. It's used when the spider species is unknown, but the venom's toxic effect is evident.
5. S30.860A: This code is used for diagnosing a nonvenomous insect bite on the lower back and pelvis during the initial encounter. While not specific to spiders, this code may be used in some cases of spider bites.
6. T63.332A: This code is used when a black widow spider has bitten a patient, and the encounter is accidental (unintentional). Black widow spiders are known for their neurotoxic venom, which can cause severe systemic symptoms.

We recommend watching this explainer video to understand these Spider Bite ICD Codes better. It provides a deeper dive into each code and its application in clinical settings.

Which Spider Bite ICD codes are Billable?

Yes, all the above ICD-10 codes for spider bites are billable.

Clinical Information

Spider bites display a spectrum of symptoms, largely contingent on the type of spider involved. Below is a more comprehensive outline of the clinical information related to spider bites:

• Species-Specific Symptoms: The manifestation of symptoms from spider bites can greatly differ based on the spider species. The range is extensive, from innocuous bites that may go unnoticed to those causing significant discomfort.

• Mild Symptoms: The majority of spider bites lead to mild symptoms. These typically include itching, localized redness, and swelling around the bite area. Such symptoms are usually transient and resolve without requiring medical treatment.

• Severe Symptoms: Certain spiders, notably venomous ones like the brown recluse or black widow, can inflict bites leading to severe symptoms. These can encompass abdominal pain, fever, muscle pain, and in some instances, systemic effects.

• Systemic Effects: Systemic effects refer to symptoms that impact the body as a whole, not just localized to the bite site. These can include symptoms like chills, excessive sweating, nausea, headaches, and an accelerated heart rate. In rare cases, the venom from specific spiders can induce significant systemic effects.

• Delayed Onset Symptoms: It's important to note that symptoms might not manifest immediately after the bite for some individuals. They may surface hours or even days later, making correlating the symptoms with a spider bite challenging, potentially complicating diagnosis and treatment.

This detailed clinical information assists in effectively managing spider bites and ensuring appropriate medical care.

Synonyms Include: 

• Arachnid bite
• Spider envenomation
• Spider sting
• Toxic effect of spider venom
• Insect bite