2026 ICD-10-CM Diagnosis Code C96.AHistiocytic sarcoma

ICD-10-CM Codes›C00–D49›C81-C96›C96

ICD-10-CM C96.A
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

C96.A is a billable ICD-10-CM diagnosis code for histiocytic sarcoma. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 820 through 825, 840 through 842. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Sarcoma.

Code Identity

ICD-10-CM Code
C96.A
Billable Status
Yes — Valid for Submission
Code Describes
Histiocytic sarcoma
Short Description
Histiocytic sarcoma
Same as the full description in the CMS dataset.
Parent Code
C96
Other and unspecified malignant neoplasms of lymphoid, hematopoietic and related tissue

Code Classification

ChapterC00–D49Neoplasms
SectionC81-C96Malignant neoplasms of lymphoid, hematopoietic and related tissue
CategoryC96Other and unspecified malignant neoplasms of lymphoid, hematopoietic and related tissue
This CodeC96.AHistiocytic sarcoma

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Fibroblastic reticular cell neoplasm
  • Histiocytic sarcoma
  • Malignant histiocytic disorder
  • Malignant histiocytosis
  • Malignant histiocytosis involving skin
  • Malignant histiocytosis of intra-abdominal lymph nodes
  • Malignant histiocytosis of intrapelvic lymph nodes
  • Malignant histiocytosis of intrathoracic lymph nodes
  • Malignant histiocytosis of lymph nodes of axilla and upper limb
  • Malignant histiocytosis of lymph nodes of head
  • Malignant histiocytosis of lymph nodes of head and neck
  • Malignant histiocytosis of lymph nodes of lower limb
  • Malignant histiocytosis of lymph nodes of multiple sites
  • Malignant histiocytosis of lymph nodes of neck
  • Malignant histiocytosis of lymph nodes of upper limb
  • Malignant histiocytosis of spleen
  • Neoplasm of intra-abdominal lymph nodes

Tabular List NotesGuidance

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

Inclusion Terms

  • Malignant histiocytosis

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Arthropathy
      • in (due to)
        • malignant histiocytosis
    • Histiocytosis
      • malignant
    • Lymphoma(of) (malignant)
      • histiocytic
        • true
    • Lymphoma(of) (malignant)
      • true histiocytic
    • Reticulosis(skin)
      • histiocytic medullary
    • Sarcoma(of)
      • histiocytic

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NEO024
Sarcoma
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Histiocytic Sarcoma

    malignant neoplasms composed of macrophages or dendritic cells. most histiocytic sarcomas present as localized tumor masses without a leukemic phase. though the biological behavior of these neoplasms resemble lymphomas, their cell lineage is histiocytic not lymphoid.

Convert C96.A to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
202.30 Mlg hist unsp xtrndl org
Approximate The match is approximate rather than exact.

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 C96.AOverview

Is C96.A a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report histiocytic sarcoma on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does C96.A group to?

When histiocytic sarcoma is the principal diagnosis on an inpatient stay, it groups to MS-DRG 820, 821, 822, 823, 824, 825, 840, 841, 842, with relative weights from 1.0104 to 5.8648 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of C96.A?

Under the General Equivalence Mappings, histiocytic sarcoma converts to ICD-9-CM 202.30 (mlg hist unsp xtrndl org). The mapping is approximate, so confirm the match fits the documentation.

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.