ICD-10-CM · Chapter 6 · G00-G99
Diseases of the nervous system
68 categories
Category titles are WHO ICD-10 titles for the same three characters; open a category for the ICD-10-CM codes in it.
- G00Bacterial meningitis, not elsewhere classified6 codes
- G01Meningitis in bacterial diseases classified elsewhere1 codes
- G02Meningitis in other infectious and parasitic diseases classified elsewhere1 codes
- G03Meningitis due to other and unspecified causes5 codes
- G04Encephalitis, myelitis and encephalomyelitis14 codes
- G05Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere2 codes
- G06Intracranial and intraspinal abscess and granuloma3 codes
- G07Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere1 codes
- G08Intracranial and intraspinal phlebitis and thrombophlebitis1 codes
- G09Sequelae of inflammatory diseases of central nervous system1 codes
- G10Huntington disease1 codes
- G11Hereditary ataxia11 codes
- G12Spinal muscular atrophy and related syndromes11 codes
- G13Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere4 codes
- G14Postpolio syndrome1 codes
- G20Parkinson disease5 codes
- G21Secondary parkinsonism8 codes
- G23Other degenerative diseases of basal ganglia6 codes
- G24Dystonia10 codes
- G25Other extrapyramidal and movement disorders16 codes
- G26Extrapyramidal and movement disorders in diseases classified elsewhere1 codes
- G30Alzheimer disease4 codes
- G31Other degenerative diseases of nervous system, not elsewhere classified14 codes
- G32Other degenerative disorders of nervous system in diseases classified elsewhere3 codes
- G35Multiple sclerosis8 codes
- G36Other acute disseminated demyelination4 codes
- G37Other demyelinating diseases of central nervous system9 codes
- G40Epilepsy58 codes
- G43Migraine48 codes
- G44Other headache syndromes40 codes
- G45Transient cerebral ischaemic attacks and related syndromes7 codes
- G46Vascular syndromes of brain in cerebrovascular diseasesI60-I679 codes
- G47Sleep disorders43 codes
- G50Disorders of trigeminal nerve4 codes
- G51Facial nerve disorders10 codes
- G52Disorders of other cranial nerves7 codes
- G53Cranial nerve disorders in diseases classified elsewhere1 codes
- G54Nerve root and plexus disorders10 codes
- G55Nerve root and plexus compressions in diseases classified elsewhere1 codes
- G56Mononeuropathies of upper limb28 codes
- G57Mononeuropathies of lower limb40 codes
- G58Other mononeuropathies4 codes
- G59Mononeuropathy in diseases classified elsewhere1 codes
- G60Hereditary and idiopathic neuropathy6 codes
- G61Inflammatory polyneuropathy6 codes
- G62Other polyneuropathies7 codes
- G63Polyneuropathy in diseases classified elsewhere1 codes
- G64Other disorders of peripheral nervous system1 codes
- G65Sequelae of Guillain-Barre syndrome3 codes
- G70Myasthenia gravis and other myoneural disorders8 codes
- G71Primary disorders of muscles28 codes
- G72Other myopathies9 codes
- G73Disorders of myoneural junction and muscle in diseases classified elsewhere3 codes
- G80Cerebral palsy7 codes
- G81Hemiplegia15 codes
- G82Paraplegia and tetraplegia8 codes
- G83Other paralytic syndromes24 codes
- G89Central pain syndrome10 codes
- G90Disorders of autonomic nervous system21 codes
- G91Hydrocephalus7 codes
- G92Toxic encephalopathy8 codes
- G93Other disorders of brain20 codes
- G94Other disorders of brain in diseases classified elsewhere1 codes
- G95Other diseases of spinal cord8 codes
- G96Other disorders of central nervous system14 codes
- G97Postprocedural disorders of nervous system, not elsewhere classified18 codes
- G98Other disorders of nervous system, not elsewhere classified2 codes
- G99Other disorders of nervous system in diseases classified elsewhere3 codes
ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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