B19.21 is a billable ICD-10 code used to specify a medical diagnosis of unspecified viral hepatitis c with hepatic coma. The code is valid during the fiscal year 2023 from October 01, 2022 through September 30, 2023 for the submission of HIPAA-covered transactions.
Unspecified diagnosis codes like B19.21 are acceptable when clinical information is unknown or not available about a particular condition. Although a more specific code is preferable, unspecified codes should be used when such codes most accurately reflect what is known about a patient's condition. Specific diagnosis codes should not be used if not supported by the patient's medical record.
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Hepatic coma due to viral hepatitis C
Index to Diseases and Injuries References
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 this diagnosis code are found in the injuries and diseases index:
Convert to ICD-9 Code
|Source ICD-10 Code||Target ICD-9 Code|
|B19.21||070.71 - Hpt C w hepatic coma NOS|
A coma is a deep state of unconsciousness. An individual in a coma is alive but unable to move or respond to his or her environment. Coma may occur as a complication of an underlying illness, or as a result of injuries, such as brain injury.
A coma rarely lasts more than 2 to 4 weeks. The outcome for coma depends on the cause, severity, and site of the damage. People may come out of a coma with physical, intellectual, and psychological problems. Some people may remain in a coma for years or even decades. For those people, the most common cause of death is infection, such as pneumonia.
NIH: National Institute of Neurological Disorders and Stroke
[Learn More in MedlinePlus]
What is hepatitis C?
Hepatitis is inflammation of the liver. Inflammation is swelling that happens when tissues of the body are injured or infected. Inflammation can damage organs.
There are different types of hepatitis. One type, hepatitis C, is caused by the hepatitis C virus (HCV). Hepatitis C can range from a mild illness lasting a few weeks to a serious, lifelong illness.
Hepatitis C can be acute or chronic:
- Acute hepatitis C is a short-term infection. The symptoms can last up to 6 months. Sometimes your body is able to fight off the infection and the virus goes away. But for most people, an acute infection leads to chronic infection.
- Chronic hepatitis C is a long-lasting infection. If it is not treated, it can last for a lifetime and cause serious health problems, including liver damage, cirrhosis (scarring of the liver), liver cancer, and even death.
How is hepatitis C spread?
Hepatitis C spreads through contact with the blood of someone who has HCV. This contact may be through:
- Sharing drug needles or other drug materials with someone who has HCV. In the United States, this is the most common way that people get hepatitis C.
- Getting an accidental stick with a needle that was used on someone who has HCV. This can happen in health care settings.
- Being tattooed or pierced with tools or inks that were not sterilized after being used on someone who has HCV
- Having contact with the blood or open sores of someone who has HCV
- Sharing personal care items that may have come in contact with another person's blood, such as razors or toothbrushes
- Being born to a mother with HCV
- Having unprotected sex with someone who has HCV
Before 1992, hepatitis C was also commonly spread through blood transfusions and organ transplants. Since then, there has been routine testing of the U.S. blood supply for HCV. It is now very rare for someone to get HCV this way.
Who is at risk for hepatitis C?
You are more likely to get hepatitis C if you:
- Have injected drugs
- Had a blood transfusion or organ transplant before July 1992
- Have hemophilia and received clotting factor before 1987
- Have been on kidney dialysis
- Were born between 1945 and 1965
- Have abnormal liver tests or liver disease
- Have been in contact with blood or infected needles at work
- Have had tattoos or body piercings
- Have worked or lived in a prison
- Were born to a mother with hepatitis C
- Have HIV/AIDS
- Have had more than one sex partner in the last 6 months
- Have had a sexually transmitted disease
- Are a man who has had sex with men
If you are at high risk for hepatitis C, your health care provider will likely recommend that you get tested for it.
What are the symptoms of hepatitis C?
Most people with hepatitis C have no symptoms. Some people with acute hepatitis C do have symptoms within 1 to 3 months after they are exposed to the virus. These symptoms may include:
- Dark yellow urine
- Gray- or clay-colored stools
- Joint pain
- Loss of appetite
- Nausea and/or vomiting
- Pain in your abdomen
- Jaundice (yellowish eyes and skin)
If you have chronic hepatitis C, you probably will not have symptoms until it causes complications. This can happen decades after you were infected. For this reason, hepatitis C screening is important, even if you have no symptoms.
What other problems can hepatitis C cause?
Without treatment, hepatitis C may lead to cirrhosis, liver failure, and liver cancer. Early diagnosis and treatment of hepatitis C can prevent these complications.
How is hepatitis C diagnosed?
Health care providers diagnose hepatitis C based on your medical history, a physical exam, and blood tests.
If you do have hepatitis C, you may need additional tests to check for liver damage. These tests may include other blood tests, an ultrasound of the liver, and a liver biopsy.
What are the treatments for hepatitis C?
Treatment for hepatitis C is with antiviral medicines. They can cure the disease in most cases.
If you have acute hepatitis C, your health care provider may wait to see if your infection becomes chronic before starting treatment.
If your hepatitis C causes cirrhosis, you should see a doctor who specializes in liver diseases. Treatments for health problems related to cirrhosis include medicines, surgery, and other medical procedures. If your hepatitis C leads to liver failure or liver cancer, you may need a liver transplant.
Can hepatitis C be prevented?
There is no vaccine for hepatitis C. But you can help protect yourself from hepatitis C infection by:
- Not sharing drug needles or other drug materials
- Wearing gloves if you have to touch another person's blood or open sores
- Making sure your tattoo artist or body piercer uses sterile tools and unopened ink
- Not sharing personal items such toothbrushes, razors, or nail clippers
- Using a latex condom during sex. If your or your partner is allergic to latex, you can use polyurethane condoms.
NIH: National Institute of Diabetes and Digestive and Kidney Diseases
[Learn More in MedlinePlus]
- FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
- FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
- FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
- FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
- FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
- FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
- FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
- FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)