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  6. 2024 ICD-10-CM Code C46
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code C46

Kaposi's sarcoma

ICD-10-CM Code:
C46
ICD-10 Code for:
Kaposi's sarcoma
Is Billable?
Not Valid for Submission
Code Navigator:

Code Classification

  • Neoplasms
    (C00–D49)
    • Malignant neoplasms of mesothelial and soft tissue
      (C45-C49)
      • Kaposi's sarcoma
        (C46)

C46 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of kaposi's sarcoma. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Kaposi's sarcoma

Non-specific codes like C46 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for kaposi's sarcoma:

  • Use C46.0 for Kaposi's sarcoma of skin - BILLABLE CODE

  • Use C46.1 for Kaposi's sarcoma of soft tissue - BILLABLE CODE

  • Use C46.2 for Kaposi's sarcoma of palate - BILLABLE CODE

  • Use C46.3 for Kaposi's sarcoma of lymph nodes - BILLABLE CODE

  • Use C46.4 for Kaposi's sarcoma of gastrointestinal sites - BILLABLE CODE

  • C46.5 for Kaposi's sarcoma of lung - NON-BILLABLE CODE

  • Use C46.50 for Kaposi's sarcoma of unspecified lung - BILLABLE CODE

  • Use C46.51 for Kaposi's sarcoma of right lung - BILLABLE CODE

  • Use C46.52 for Kaposi's sarcoma of left lung - BILLABLE CODE

  • Use C46.7 for Kaposi's sarcoma of other sites - BILLABLE CODE

  • Use C46.9 for Kaposi's sarcoma, unspecified - BILLABLE CODE

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Code First

Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.
  • any human immunodeficiency virus HIV disease B20

Patient Education


Kaposi Sarcoma

What is Kaposi sarcoma?

Kaposi sarcoma, sometimes called KS, is a type of cancer. It causes lesions (abnormal tissue) to grow in different parts of the body, including:

  • The skin
  • Lymph nodes
  • Mucous membranes (the lining of the mouth, nose, and throat)
  • Other organs

These lesions are usually red or purple. They are made of cancer cells, new blood vessels, and blood cells. The lesions may begin in more than one place in the body at the same time. This makes Kaposi sarcoma different from other cancers.

What causes Kaposi sarcoma and who is more likely to develop it?

Kaposi sarcoma is caused by infection with human herpesvirus-8 (HHV-8). This virus is also called Kaposi sarcoma-associated herpesvirus (KSHV). Most people infected with this virus don't get Kaposi sarcoma. But certain people who get this virus are more likely to develop one of the types of Kaposi sarcoma:

  • People with weakened immune systems due to HIV can develop epidemic (HIV-associated) Kaposi sarcoma.
  • People with weakened immune systems due to medicines they need to take after an organ transplant can develop iatrogenic (transplant-related) Kaposi sarcoma.
  • Older men of Mediterranean or Eastern European Jewish heritage can develop classic Kaposi sarcoma.
  • Young men in Africa can develop endemic (African) Kaposi sarcoma.

What are the symptoms of Kaposi sarcoma?

Kaposi sarcoma usually starts out as one or more red, purple, or brown skin lesions on the legs and feet. They are most often on the ankles or soles of the feet. Over time, lesions may form in other parts of the body. The lesions may not cause symptoms. But sometimes the lesions can cause problems, especially as you get more of them and they grow bigger. For example:

  • Pressure from the lesions may block the flow of lymph and blood in the legs and cause painful swelling
  • If lesions grow in your stomach or intestines, they can bleed and may cause abdominal (belly) pain and diarrhea
  • Lesions in the lungs can also bleed and may cause shortness of breath

How is Kaposi sarcoma diagnosed?

To find out whether you have Kaposi sarcoma, your health care provider:

  • Will ask about your medical and family history
  • Will do a physical exam
  • May order a chest x-ray to look for Kaposi sarcoma in the lungs
  • May do a biopsy to check for Kaposi sarcoma lesions in the skin
  • May do an endoscopy to check for Kaposi sarcoma in the stomach and intestines
  • May do a bronchoscopy to check for Kaposi sarcoma in the lungs

If you do have Kaposi sarcoma, you will likely need blood and imaging tests to find out if the cancer has spread to other parts of the body.

What are the treatments for Kaposi sarcoma?

Which treatment(s) you get will depend on

  • The type of Kaposi sarcoma you have
  • How many lesions you have and where in the body they are
  • What kinds of problems the lesions are causing
  • Your overall health

For people who have epidemic (HIV-associated) Kaposi sarcoma, taking HIV medicines may be enough to treat the Kaposi sarcoma. For people who have iatrogenic (transplant-related) Kaposi sarcoma, changing the dose of the medicines or switching medicines may be helpful. But some people with these types of Kaposi sarcoma will need additional treatment.

The treatment options for Kaposi sarcoma may include:

  • Radiation therapy
  • Surgery
  • Cryosurgery, a treatment that uses an instrument to freeze and destroy abnormal tissue
  • Chemotherapy
  • Immunotherapy

NIH: National Cancer Institute


[Learn More in MedlinePlus]

Soft Tissue Sarcoma-Patient Version

Learn about soft tissue sarcoma risk factors, symptoms, tests to diagnose, factors affecting prognosis, staging, and treatment.
[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • 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. This was the first year ICD-10-CM was implemented into the HIPAA code set.