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Home/ICD-10 Codes/Diseases of the nervous system

Diseases of the nervous system
G00-G99

G00-G09
G10-G14
G20-G26
G30-G32
G35-G37
This chapter covers ICD-10-CM codes in the range G00-G99 for diseases of the nervous system . Includes diseases of the central and peripheral nervous system such as meningitis, Alzheimer's, Parkinson's, and epilepsy.
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About This Chapter
Excludes2
  • • certain conditions originating in the perinatal period ( P04-P96 ) P04-P96
  • • certain infectious and parasitic diseases ( A00-B99 ) A00-B99
  • • complications of pregnancy, childbirth and the puerperium ( O00- O9A ) O00-O9A
  • • congenital malformations, deformations, and chromosomal abnormalities ( Q00-Q99 ) Q00-Q99
  • • endocrine, nutritional and metabolic diseases ( E00-E88 ) E00-E88
  • • injury, poisoning and certain other consequences of external causes ( S00-T88 ) S00-T88
  • • neoplasms ( C00-D49 ) C00-D49
  • • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified ( R00-R94 ) R00-R94
Inflammatory diseases of the central nervous system
10codes codes
G00
Bacterial meningitis, not elsewhere classified
G01
Meningitis in bacterial diseases classified elsewhere
G02
Meningitis in other infectious and parasitic diseases classified elsewhere
G03
Meningitis due to other and unspecified causes
G04
Encephalitis, myelitis and encephalomyelitis
G05
Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
G06
Intracranial and intraspinal abscess and granuloma
G07
Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere
G08
Intracranial and intraspinal phlebitis and thrombophlebitis
G09
Sequelae of inflammatory diseases of central nervous system
Systemic atrophies primarily affecting the central nervous system
5codes codes
G10
Huntington's disease
G11
Hereditary ataxia
G12
Spinal muscular atrophy and related syndromes
G13
Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere
G14
Postpolio syndrome
Extrapyramidal and movement disorders
6codes codes
G20
Parkinson's disease
G21
Secondary parkinsonism
G23
Other degenerative diseases of basal ganglia
G24
Dystonia
G25
Other extrapyramidal and movement disorders
G26
Extrapyramidal and movement disorders in diseases classified elsewhere
Other degenerative diseases of the nervous system
3codes codes
G30
Alzheimer's disease
G31
Other degenerative diseases of nervous system, not elsewhere classified
G32
Other degenerative disorders of nervous system in diseases classified elsewhere
Demyelinating diseases of the central nervous system
3codes codes
G35
Multiple sclerosis
G36
Other acute disseminated demyelination
G37
Other demyelinating diseases of central nervous system
Episodic and paroxysmal disorders
6codes codes
G40
Epilepsy and recurrent seizures
G43
Migraine
G44
Other headache syndromes
G45
Transient cerebral ischemic attacks and related syndromes
G46
Vascular syndromes of brain in cerebrovascular diseases
G47
Sleep disorders
Nerve, nerve root and plexus disorders
10codes codes
G50
Disorders of trigeminal nerve
G51
Facial nerve disorders
G52
Disorders of other cranial nerves
G53
Cranial nerve disorders in diseases classified elsewhere
G54
Nerve root and plexus disorders
G55
Nerve root and plexus compressions in diseases classified elsewhere
G56
Mononeuropathies of upper limb
G57
Mononeuropathies of lower limb
G58
Other mononeuropathies
G59
Mononeuropathy in diseases classified elsewhere
Polyneuropathies and other disorders of the peripheral nervous system
6codes codes
G60
Hereditary and idiopathic neuropathy
G61
Inflammatory polyneuropathy
G62
Other and unspecified polyneuropathies
G63
Polyneuropathy in diseases classified elsewhere
G64
Other disorders of peripheral nervous system
G65
Sequelae of inflammatory and toxic polyneuropathies
Diseases of myoneural junction and muscle
4codes codes
G70
Myasthenia gravis and other myoneural disorders
G71
Primary disorders of muscles
G72
Other and unspecified myopathies
G73
Disorders of myoneural junction and muscle in diseases classified elsewhere
Cerebral palsy and other paralytic syndromes
4codes codes
G80
Cerebral palsy
G81
Hemiplegia and hemiparesis
G82
Paraplegia (paraparesis) and quadriplegia (quadriparesis)
G83
Other paralytic syndromes
Other disorders of the nervous system
11codes codes
G89
Pain, not elsewhere classified
G90
Disorders of autonomic nervous system
G91
Hydrocephalus
G92
Toxic encephalopathy
G93
Other disorders of brain
G94
Other disorders of brain in diseases classified elsewhere
G95
Other and unspecified diseases of spinal cord
G96
Other disorders of central nervous system
G97
Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified
G98
Other disorders of nervous system not elsewhere classified
G99
Other disorders of nervous system in diseases classified elsewhere
Chapter Contents
Inflammatory diseases of the central nervous system
G00-G09
Systemic atrophies primarily affecting the central nervous system
G10-G14
Extrapyramidal and movement disorders
G20-G26
Other degenerative diseases of the nervous system
G30-G32
Demyelinating diseases of the central nervous system
G35-G37
Episodic and paroxysmal disorders
G40-G47
Nerve, nerve root and plexus disorders
G50-G59
Polyneuropathies and other disorders of the peripheral nervous system
G60-G65
Diseases of myoneural junction and muscle
G70-G73
Cerebral palsy and other paralytic syndromes
G80-G83
Other disorders of the nervous system
G89-G99