C96.A Histiocytic sarcoma

The ICD-10-CM code for Histiocytic sarcoma is C96.A (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

2: Neoplasms (C00-D49)

Section

C81-C96: Malignant neoplasms of lymphoid, hematopoietic and related tissue (C81-C96)

Category C96

13 codes (11 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to C96.A:

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

Inclusion Terms

• Malignant histiocytosis

U.S. Hospital Utilization

• An estimated 195 U.S. inpatient stays in 2023 included C96.A among the documented diagnoses.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Tx of primary site (TOC entry)

a. Admission/Encounter for treatment of primary site ............................................................. 33

Tx of secondary site (TOC entry)

b. Admission/Encounter for treatment of secondary site .......................................................... 33

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)