ICD-11 classes
11 Diseases of the circulatory system
Neoplasms of the circulatory system
Malignant mesenchymal neoplasms
2B51 — Osteosarcoma, primary site

ICD-11 2B51 — Osteosarcoma, primary site

A usually aggressive malignant bone-forming mesenchymal tumour, predominantly affecting adolescents and young adults. It usually involves bones and less frequently extraosseous sites. It often involves the long bones (particularly distal femur, proximal tibia, and proximal humerus). Pain with or without a palpable mass is the most frequent clinical symptom. It may spread to other anatomic sites, particularly the lungs.

The diagnosis includes nothing.

The diagnosis excludes nothing.

Diagnosis with code 2B51 contains 5 clarifying diagnoses:

  1. 2B51.0 — Osteosarcoma of bone or articular cartilage of jaw
  2. 2B51.1 — Osteosarcoma of bone or articular cartilage of limbs
  3. 2B51.2 — Osteosarcoma of bone or articular cartilage of pelvis
  4. 2B51.Y — Osteosarcoma of bone and articular cartilage of other specified sites
  5. 2B51.Z — Osteosarcoma of bone and articular cartilage of unspecified sites

The diagnosis is coded elsewhere:

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