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ICD11

Diseases of the nervous system (G00–G99)

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Diseases of the nervous system is a chapter in ICD-11 that includes conditions affecting the central, peripheral, and autonomic nervous systems, which are responsible for controlling sensation, movement, cognition, and vital bodily functions. These disorders may result from genetic factors, infections, trauma, degeneration, vascular events, or immune-mediated processes, leading to a wide range of neurological signs and symptoms.

This chapter encompasses conditions such as epilepsy, cerebrovascular diseases, neurodegenerative disorders, neuromuscular diseases, and disorders of nerve roots and plexuses. Accurate classification supports precise diagnosis, effective treatment planning, and long-term management, while also facilitating research, epidemiological tracking, and the development of strategies to reduce the burden of neurological diseases worldwide.

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Frequently asked questions

This chapter includes disorders affecting the brain, spinal cord, peripheral nerves, and neuromuscular junctions.

It includes epilepsy, Parkinson’s disease, Alzheimer’s disease, multiple sclerosis, and neuropathies.

Yes. Both degenerative and non-degenerative neurological disorders are classified here.

It incorporates advances in neuroscience and clearer clinical distinctions.

Primary cerebrovascular diseases are classified under the circulatory system chapter.

It supports diagnosis, long-term care planning, research, and health system resource allocation.

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