Undifferentiated pleomorphic sarcoma, primary site

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2025-01

Undifferentiated pleomorphic sarcoma is a high-grade sarcoma composed of pleomorphic spindled or epithelioid cells with no areas of differentiation that would indicate a specific subset of sarcoma.

sections/codes in this section (2B54-2B54)

• Undifferentiated pleomorphic sarcoma of skin  (2B54.0)
• Undifferentiated pleomorphic sarcoma of retroperitoneum or peritoneum  (2B54.1)
• Undifferentiated pleomorphic sarcoma, other specified primary site  (2B54.Y)
• Undifferentiated pleomorphic sarcoma, unspecified primary site  (2B54.Z)

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