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ICD11

Diseases of the musculoskeletal system or connective tissue (M00–M99)

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Diseases of the musculoskeletal system or connective tissue is a chapter in ICD-11 that includes conditions affecting bones, joints, muscles, tendons, ligaments, and connective tissues that support and enable movement and structural stability. These disorders may arise from degenerative changes, inflammation, autoimmune processes, trauma, infections, congenital abnormalities, or metabolic disturbances, leading to pain, stiffness, weakness, deformity, or reduced mobility.

This chapter covers a broad spectrum of conditions such as arthritis, osteoporosis, inflammatory rheumatic diseases, soft tissue disorders, and systemic connective tissue diseases. Accurate classification supports appropriate diagnosis, treatment planning, and rehabilitation, while also contributing to research, epidemiological analysis, and public health strategies aimed at preventing disability and maintaining musculoskeletal health.

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Frequently asked questions

This chapter includes disorders affecting bones, joints, muscles, tendons, ligaments, and connective tissues.

It includes arthritis, osteoporosis, connective tissue diseases, and musculoskeletal pain disorders.

Yes. Both inflammatory and degenerative musculoskeletal disorders are classified here.

Acute injuries are classified in the injury chapter, while chronic musculoskeletal disorders are coded here.

It aligns with modern orthopedics and rheumatology practices.

It supports rehabilitation planning, disability assessment, and healthcare resource management.

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