2026 ICD-10-CM Diagnosis Code C46Kaposi's sarcoma

ICD-10-CM Codes›C00–D49›C45-C49›C46

ICD-10-CM C46
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C46 is a non-billable ICD-10-CM category code for Kaposi's sarcoma, so it cannot be submitted on claims. Use a more specific code from this category instead, such as C46.0, C46.1, C46.2, and C46.3.

Code Identity

ICD-10-CM Code
C46
Billable Status
No — Non-Billable Category
Code Describes
Kaposi's sarcoma
Chapter
C45-C49
Malignant neoplasms of mesothelial and soft tissue

Code Classification

ChapterC00–D49Neoplasms
SectionC45-C49Malignant neoplasms of mesothelial and soft tissue
CategoryC46Kaposi's sarcoma
This CodeC46Kaposi's sarcoma

Specific Coding for Kaposi's sarcomaOverview

Non-specific codes like C46 require more characters. Use one of these billable codes instead:

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

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

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

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

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

  • C46.5 for Kaposi's sarcoma of lung

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

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

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

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

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

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Code First

  • any human immunodeficiency virus HIV disease B20

Patient EducationClinical

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 full article covers:

  • What is Kaposi sarcoma?
  • What causes Kaposi sarcoma and who is more likely to develop it?
  • What are the symptoms of Kaposi sarcoma?
  • How is Kaposi sarcoma diagnosed?
  • What are the treatments for Kaposi sarcoma?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About C46Overview

Is C46 (Kaposi's sarcoma) a billable code?

No. This is a category header that groups the codes for Kaposi's sarcoma, and headers cannot be submitted on claims. Claims for Kaposi's sarcoma need a more specific code from this category, such as C46.0, C46.1, and C46.2.