2026 ICD-10-CM Diagnosis Code C46.1Kaposi's sarcoma of soft tissue
ICD-10-CM Codes›C00–D49›C45-C49›C46
- Billable — Valid for Submission
- Chronic Condition
C46.1 is a billable ICD-10-CM diagnosis code for Kaposi's sarcoma of soft tissue. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 606 through 607, 974 through 976. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sarcoma.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Kaposi's sarcoma of soft tissue
Tabular List NotesGuidance
Coding notes and annotation back-references applicable to this code.
Inclusion Terms
- Kaposi's sarcoma of blood vessel
- Kaposi's sarcoma of connective tissue
- Kaposi's sarcoma of fascia
- Kaposi's sarcoma of ligament
- Kaposi's sarcoma of lymphatic(s) NEC
- Kaposi's sarcoma of muscle
Type 2 Excludes
- Kaposi's sarcoma of lymph glands and nodes C46.3
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.
A type 2 excludes note represents "Not included here". An excludes2 note indicates that the condition excluded is not part of the condition represented by the code, but a patient may have both conditions at the same time. When an Excludes2 note appears under a code, it is acceptable to use both the code and the excluded code together, when appropriate.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
- Kaposi's
- sarcoma
- connective tissue - C46.1
- Sarcoma (of) - See Also: Neoplasm, connective tissue, malignant;
- Kaposi's
- connective tissue - C46.1
External Cause of Injuries IndexGuidance
References for this code in the External Cause of Injuries Index.
- Kaposi's
- sarcoma
- connective tissue
- Sarcoma(of)
- Kaposi's
- connective tissue
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
Convert C46.1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About C46.1Overview
Is C46.1 (Kaposi's sarcoma) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report Kaposi's sarcoma of soft tissue on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does C46.1 group to?
When Kaposi's sarcoma of soft tissue is the principal diagnosis on an inpatient stay, it groups to MS-DRG 606, 607, 974, 975, 976, with relative weights from 0.8945 to 2.8860 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of C46.1?
Under the General Equivalence Mappings, Kaposi's sarcoma of soft tissue converts to ICD-9-CM 176.1 (sft tisue - kpsi's srcma). The mapping is a direct match.
Footnotes
[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:
- The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
- The condition places limitations on self-care, independent living, and social interactions.
