Valid for Submission
B02.0 is a billable diagnosis code used to specify a medical diagnosis of zoster encephalitis. The code B02.0 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.
The ICD-10-CM code B02.0 might also be used to specify conditions or terms like encephalitis due to herpesviridae or herpes zoster encephalitis.
Tabular List of Diseases and Injuries
The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code B02.0:
Inclusion TermsInclusion Terms
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
- Zoster meningoencephalitis
Index to Diseases and Injuries
The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code B02.0 are found in the index:
- - Encephalitis (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) - G04.90
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Encephalitis due to Herpesviridae
- Herpes zoster encephalitis
- ENCEPHALITIS VARICELLA ZOSTER-. inflammation of brain tissue caused by infection with the varicella zoster virus herpesvirus 3 human. this condition is associated with immunocompromised states including the acquired immunodeficiency syndrome. pathologically the virus tends to induce a vasculopathy and infect oligodendrocytes and ependymal cells leading to cerebral infarction multifocal regions of demyelination and periventricular necrosis. manifestations of varicella encephalitis usually occur 5 7 days after onset of herpes zoster and include headache; vomiting; lethargy; focal neurologic deficits; fever; and coma. from joynt clinical neurology 1996 ch 26 pp29 32; hum pathol 1996 sep;279:927 38
Convert B02.0 to ICD-9 Code
The General Equivalency Mapping (GEM) crosswalk indicates an approximate mapping between the ICD-10 code B02.0 its ICD-9 equivalent. The approximate mapping means there is not an exact match between the ICD-10 code and the ICD-9 code and the mapped code is not a precise representation of the original code.
Information for Patients
Encephalitis is an inflammation of the brain. Usually the cause is a viral infection, but bacteria can also cause it. It can be mild or severe. Most cases are mild. You may have flu-like symptoms. With a mild case, you may just need rest, plenty of fluids, and a pain reliever.
Severe cases need immediate treatment. Symptoms of severe cases include
- Severe headache
- Sudden fever
In babies, additional symptoms may include constant crying, poor feeding, body stiffness, and bulging in the soft spots of the skull.
Severe cases may require a stay in the hospital. Treatments include oral and intravenous (IV) medicines to reduce inflammation and treat infection. Patients with breathing difficulties may need artificial respiration. Some people may need physical, speech, and occupational therapy once the illness is under control.
NIH: National Institute of Neurological Disorders and Stroke
- Cerebral spinal fluid (CSF) collection (Medical Encyclopedia)
- CSF analysis (Medical Encyclopedia)
- Encephalitis (Medical Encyclopedia)
- Japanese Encephalitis Vaccine: What You Need to Know (Centers for Disease Control and Prevention)
- Subacute sclerosing panencephalitis (Medical Encyclopedia)
Also called: Herpes zoster, Postherpetic neuralgia
What is shingles?
Shingles is an outbreak of rash or blisters on the skin. It is caused by the varicella-zoster virus - the same virus that causes chickenpox. After you have chickenpox, the virus stays in your body. It may not cause problems for many years. But as you get older, the virus may reappear as shingles.
Is shingles contagious?
Shingles is not contagious. But you can catch chickenpox from someone with shingles. If you've never had chickenpox or the chickenpox vaccine, try to stay away from anyone who has shingles.
If you have shingles, try to stay away from anyone who has not had chickenpox or the chickenpox vaccine, or anyone who might have a weak immune system.
Who is at risk for shingles?
Anyone who has had chickenpox is at risk for getting shingles. But this risk goes up as you get older; shingles is most common in people over age 50.
People with weakened immune systems are at higher risk of getting shingles. This includes those who
- Have immune system diseases such as HIV/AIDS
- Have certain cancers
- Take immunosuppressive drugs after an organ transplant
Your immune system may be weaker when you have an infection or are stressed. This can raise your risk of shingles.
It is rare, but possible, to get shingles more than once.
What are the symptoms of shingles?
Early signs of shingles include burning or shooting pain and tingling or itching. It is usually on one side of the body or face. The pain can be mild to severe.
One to 14 days later, you will get a rash. It consists of blisters that typically scab over in 7 to 10 days. The rash is usually a single stripe around either the left or the right side of the body. In other cases, the rash occurs on one side of the face. In rare cases (usually among people with weakened immune systems), the rash may be more widespread and look similar to a chickenpox rash.
Some people may also have other symptoms:
- Upset stomach
What are the complications of shingles?
Shingles can cause complications:
- Postherpetic neuralgia (PHN) is most common complication of shingles. It causes severe pain in the areas where you had the shingles rash. It usually gets better in a few weeks or months. But some people can have pain from PHN for many years, and it can interfere with daily life.
- Vision loss can happen if shingles affects your eye. It may be temporary or permanent.
- Hearing or balance problems are possible if you have shingles within or near your ear. You may also have weakness of the muscles on that side of your face. These problems can be temporary or permanent.
Very rarely, shingles can also lead to pneumonia, brain inflammation (encephalitis), or death.
How is shingles diagnosed?
Usually your health care provider can diagnose shingles by taking your medical history and looking at your rash. In some cases, your provider may scrap off tissue from the rash or swab some fluid from the blisters and send the sample to a lab for testing.
What are the treatments for shingles?
There is no cure for shingles. Antiviral medicines may help to make the attack shorter and less severe. They may also help prevent PHN. The medicines are most effective if you can take them within 3 days after the rash appears. So if you think you might have shingles, contact your health care provider as soon as possible.
Pain relievers may also help with the pain. A cool washcloth, calamine lotion, and oatmeal baths may help relieve some of the itching.
Can shingles be prevented?
There are vaccines to prevent shingles or lessen its effects. The Centers for Disease Control and Prevention recommends that healthy adults 50 years and older get the Shingrix vaccine. You need two doses of the vaccine, given 2 to 6 months apart. Another vaccine, Zostavax, may be used in certain cases.
- Post-herpetic neuralgia - aftercare (Medical Encyclopedia)
- Ramsay Hunt syndrome (Medical Encyclopedia)
- Shingles (Medical Encyclopedia)
- Shingles - aftercare (Medical Encyclopedia)
- Shingles Vaccine: What You Need to Know (Centers for Disease Control and Prevention)
Shingles Shingles (also known as herpes zoster) results from infection by the varicella zoster virus. This common virus causes chickenpox (also known as varicella), which is characterized by itchy spots on the skin that cover the whole body and usually occurs in childhood or adolescence. After the body fights the initial infection, the varicella zoster virus remains in nerve cells for the rest of a person's life. Because the virus is controlled by immune system cells called T cells, it is generally inactive (latent) and typically causes no health problems. However, in some people, the virus becomes active again (reactivates) and causes shingles. Shingles can occur at any age, although it is rare in childhood and becomes more common after age 50.Shingles is characterized by a severely painful, itchy, or tingling rash, most commonly on one side of the torso, although it can occur anywhere on the body. Reactivation of the virus usually occurs in a single nerve, leading to the symptoms of shingles in just the region of skin connected to that nerve. When the nerve connected to the eye and the skin surrounding it is affected, the condition is called herpes zoster ophthalmicus. This form of shingles, which accounts for about 20 percent of cases, can cause permanent vision impairment.Some individuals with shingles feel throbbing or tingling in the affected region shortly before the rash appears. Blisters form in the rash area, break open, and scab over in a few days. Healing usually takes 2 to 4 weeks. Most people have only one episode of shingles, although it can recur in rare cases.In 5 to 20 percent of people with shingles, severe pain continues in the affected region after healing of the rash, which is known as postherpetic neuralgia (PHN). PHN is the most common complication of shingles. It can also involve severe itchiness or an overactive pain response to things that do not usually cause pain (allodynia), such as a light touch. PHN can last weeks, months, or even years. The likelihood of developing PHN after shingles and its severity increase with age. The pain caused by shingles and PHN can disrupt day-to-day activities and reduce a person's quality of life.