ICD-10 Chapter G

(G00-G09) Inflammatory diseases of the central nervous system

 * Bacterial meningitis, not elsewhere classified
 * Haemophilus meningitis
 * Pneumococcal meningitis
 * Streptococcal meningitis
 * Staphylococcal meningitis
 * Other bacterial meningitis
 * Meningitis due to Escherichia coli
 * Meningitis due to Friedländer bacillus
 * Meningitis due to Klebsiella
 * Bacterial meningitis, unspecified


 * Meningitis in bacterial diseases classified elsewhere
 * Meningitis in other infectious and parasitic diseases classified elsewhere


 * Meningitis due to other and unspecified causes
 * Nonpyogenic meningitis
 * Chronic meningitis
 * Benign recurrent meningitis (Mollaret)
 * Meningitis due to other specified causes
 * Meningitis, unspecified
 * Arachnoiditis (spinal) NOS


 * Encephalitis, myelitis and encephalomyelitis
 * Acute disseminated encephalitis
 * Tropical spastic paraplegia
 * Bacterial meningoencephalitis and meningomyelitis, not elsewhere classified
 * Other encephalitis, myelitis and encephalomyelitis
 * Encephalitis, myelitis and encephalomyelitis, unspecified


 * Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
 * Intracranial and intraspinal abscess and granuloma
 * Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere
 * Intracranial and intraspinal phlebitis and thrombophlebitis
 * Sequelae of inflammatory diseases of central nervous system

(G10-G13) Systemic atrophies primarily affecting the central nervous system

 * Huntington's disease


 * Hereditary ataxia
 * Congenital nonprogressive ataxia
 * Early-onset cerebellar ataxia
 * Early-onset cerebellar ataxia with essential tremor
 * Early-onset cerebellar ataxia with myoclonus (Hunt's ataxia)
 * Early-onset cerebellar ataxia with retained tendon reflexes
 * Friedreich's ataxia (autosomal recessive)
 * X-linked recessive spinocerebellar ataxia
 * Late-onset cerebellar ataxia
 * Cerebellar ataxia with defective DNA repair
 * Ataxia telangiectasia (Louis-Bar)
 * Hereditary spastic paraplegia
 * Other hereditary ataxias
 * Hereditary ataxia, unspecified


 * Spinal muscular atrophy and related syndromes
 * Werdnig-Hoffman disease (Type 1)
 * Other inherited spinal muscular atrophy
 * Progressive bulbar palsy of childhood (Fazio-Londe)
 * Kugelberg-Welander disease (Type 3)
 * Motor neuron disease
 * Familial motor neuron disease
 * Amyotrophic lateral sclerosis
 * Primary lateral sclerosis
 * Progressive bulbar palsy
 * Progressive spinal muscular atrophy


 * Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere
 * Paraneoplastic neuromyopathy and neuropathy
 * Other systemic atrophy primarily affecting central nervous system in neoplastic disease
 * Paraneoplastic limbic encephalopathy
 * Systemic atrophy primarily affecting central nervous system in myxoedema
 * Systemic atrophy primarily affecting central nervous system in other diseases classified elsewhere

(G20-G26) Extrapyramidal and movement disorders

 * Parkinson's disease


 * Secondary parkinsonism
 * Malignant neuroleptic syndrome
 * Postencephalitic parkinsonism


 * Parkinsonism in diseases classified elsewhere


 * Other degenerative diseases of basal ganglia
 * Hallervorden-Spatz disease
 * Progressive supranuclear ophthalmoplegia (Steele-Richardson-Olszewski)
 * Striatonigral degeneration
 * Other specified degenerative diseases of basal ganglia
 * Degenerative disease of basal ganglia, unspecified


 * Dystonia
 * Drug-induced dystonia
 * Idiopathic familial dystonia
 * Idiopathic nonfamilial dystonia
 * Spasmodic torticollis
 * Idiopathic orofacial dystonia
 * Orofacial dyskinesia
 * Blepharospasm
 * Other dystonia
 * Dystonia, unspecified
 * Dyskinesia NOS


 * Other extrapyramidal and movement disorders
 * Essential tremor
 * Drug-induced tremor
 * Other specified forms of tremor
 * Myoclonus
 * Drug-induced chorea
 * Other chorea
 * Drug-induced tics and other tics of organic origin
 * Other specified extrapyramidal and movement disorders
 * Restless legs syndrome
 * Stiff-man syndrome
 * Extrapyramidal and movement disorder, unspecified


 * Extrapyramidal and movement disorders in diseases classified elsewhere

(G30-G32) Other degenerative diseases of the nervous system

 * Alzheimer's disease


 * Other degenerative diseases of nervous system, not elsewhere classified
 * Circumscribed brain atrophy
 * Pick's disease
 * Senile degeneration of brain, not elsewhere classified
 * Degeneration of nervous system due to alcohol
 * Other specified degenerative diseases of nervous system
 * Grey-matter degeneration (Alpers)
 * Lewy body dementia
 * Subacute necrotizing encephalopathy (Leigh)
 * Degenerative disease of nervous system, unspecified


 * Other degenerative disorders of nervous system in diseases classified elsewhere

(G35-G37) Demyelinating diseases of the central nervous system

 * Multiple sclerosis


 * Other acute disseminated demyelination
 * Neuromyelitis optica (Devic)
 * Acute and subacute haemorrhagic leukoencephalitis (Hurst)
 * Other specified acute disseminated demyelination
 * Acute disseminated demyelination, unspecified


 * Other demyelinating diseases of central nervous system
 * Diffuse sclerosis
 * Central demyelination of corpus callosum
 * Central pontine myelinolysis
 * Acute transverse myelitis in demyelinating disease of central nervous system
 * Subacute necrotizing myelitis
 * Concentric sclerosis (Baló)
 * Other specified demyelinating diseases of central nervous system
 * Demyelinating disease of central nervous system, unspecified

(G40-G47) Episodic and paroxysmal disorders

 * Epilepsy
 * Localization-related (focal)(partial) idiopathic epilepsy and epileptic syndromes with seizures of localized onset
 * Localization-related (focal)(partial) symptomatic epilepsy and epileptic syndromes with simple partial seizures
 * Localization-related (focal)(partial) symptomatic epilepsy and epileptic syndromes with complex partial seizures
 * Generalized idiopathic epilepsy and epileptic syndromes'''
 * Benign:
 * myoclonic epilepsy in infancy
 * neonatal convulsions (familial)
 * Childhood absence epilepsy (pyknolepsy)
 * Epilepsy with grand mal seizures on awakening
 * Juvenile:
 * absence epilepsy
 * myoclonic epilepsy (impulsive petit mal)
 * Nonspecific epileptic seizures:
 * atonic
 * clonic
 * myoclonic
 * tonic
 * tonic-clonic
 * Other generalized epilepsy and epileptic syndromes
 * Epilepsy with:
 * myoclonic absences
 * myoclonic-astatic seizures
 * Infantile spasms
 * Lennox-Gastaut syndrome
 * Salaam attacks
 * Symptomatic early myoclonic encephalopathy
 * West's syndrome
 * Special epileptic syndromes
 * Epilepsia partialis continua (Kozhevnikof)
 * Grand mal seizures, unspecified (with or without petit mal)
 * Petit mal, unspecified, without grand mal seizures
 * Other epilepsy
 * Epilepsies and epileptic syndromes undetermined as to whether they are focal or generalized
 * Epilepsy, unspecified


 * Status epilepticus
 * Grand mal status epilepticus
 * Petit mal status epilepticus
 * Complex partial status epilepticus
 * Other status epilepticus
 * Status epilepticus, unspecified


 * Migraine
 * Migraine without aura (common migraine)
 * Migraine with aura (classical migraine)
 * Status migrainosus
 * Complicated migraine
 * Other migraine
 * Migraine, unspecified


 * Other headache syndromes
 * Cluster headache syndrome
 * Vascular headache, not elsewhere classified
 * Tension-type headache
 * Chronic post-traumatic headache
 * Drug-induced headache, not elsewhere classified
 * Other specified headache syndromes


 * Transient cerebral ischaemic attacks and related syndromes
 * Vertebro-basilar artery syndrome
 * Carotid artery syndrome (hemispheric)
 * Multiple and bilateral precerebral artery syndromes
 * Amaurosis fugax
 * Transient global amnesia
 * Other transient cerebral ischaemic attacks and related syndromes
 * Transient cerebral ischaemic attack, unspecified


 * Vascular syndromes of brain in cerebrovascular diseases
 * Middle cerebral artery syndrome
 * Anterior cerebral artery syndrome
 * Posterior cerebral artery syndrome
 * Brain stem stroke syndrome
 * Benedikt syndrome
 * Claude syndrome
 * Foville syndrome
 * Millard-Gubler syndrome
 * Wallenberg syndrome
 * Weber syndrome
 * Cerebellar stroke syndrome
 * Pure motor lacunar syndrome
 * Pure sensory lacunar syndrome
 * Other lacunar syndromes
 * Other vascular syndromes of brain in cerebrovascular diseases


 * Sleep disorders
 * Disorders of initiating and maintaining sleep (insomnias)
 * Disorders of excessive somnolence (hypersomnias)
 * Disruptions in circadian rhythm including jet lag
 * Sleep apnoea
 * Narcolepsy and cataplexy

(G50-G59) Nerve, nerve root and plexus disorders

 * Disorders of trigeminal nerve (V)
 * Trigeminal neuralgia


 * Facial nerve disorders (VII)
 * Bell's palsy
 * Facial palsy
 * Geniculate ganglionitis
 * Melkersson's syndrome
 * Melkersson-Rosenthal syndrome
 * Clonic hemifacial spasm
 * Facial myokymia
 * Other disorders of facial nerve
 * Disorder of facial nerve, unspecified


 * Disorders of other cranial nerves
 * Disorders of olfactory nerve (I)
 * Disorders of glossopharyngeal nerve (IX)
 * Disorders of vagus nerve (X)
 * Disorders of hypoglossal nerve (XII)
 * Disorders of multiple cranial nerves
 * Disorders of other specified cranial nerves
 * Cranial nerve disorder, unspecified


 * Cranial nerve disorders in diseases classified elsewhere


 * Nerve root and plexus disorders
 * Brachial plexus disorders
 * Thoracic outlet syndrome
 * Lumbosacral plexus disorders
 * Cervical root disorders, not elsewhere classified
 * Thoracic root disorders, not elsewhere classified
 * Lumbosacral root disorders, not elsewhere classified
 * Neuralgic amyotrophy
 * Parsonage-Aldren-Turner syndrome
 * Phantom limb syndrome with pain
 * Phantom limb syndrome without pain
 * Nerve root and plexus compressions in diseases classified elsewhere
 * Mononeuropathies of upper limb
 * Carpal tunnel syndrome
 * Causalgia
 * Mononeuropathies of lower limb
 * Lesion of sciatic nerve
 * Meralgia paraesthetica
 * Lesion of femoral nerve
 * Lesion of lateral popliteal nerve
 * Lesion of medial popliteal nerve
 * Tarsal tunnel syndrome
 * Lesion of plantar nerve
 * Morton's metatarsalgia
 * Other mononeuropathies of lower limb
 * Mononeuropathy of lower limb, unspecified


 * Other mononeuropathies
 * Intercostal neuropathy
 * Mononeuritis multiplex
 * Other specified mononeuropathies
 * Mononeuropathy, unspecified


 * Mononeuropathy in diseases classified elsewhere

(G60-G64) Polyneuropathies and other disorders of the peripheral nervous system

 * Hereditary and idiopathic neuropathy
 * Hereditary motor and sensory neuropathy
 * Charcot-Marie-Tooth disease
 * Déjerine-Sottas disease
 * Hereditary motor and sensory neuropathy, types I-IV
 * Hypertrophic neuropathy of infancy
 * Peroneal muscular atrophy (axonal type)(hypertrophic type)
 * Roussy-Lévy syndrome
 * Refsum's disease
 * Neuropathy in association with hereditary ataxia
 * Idiopathic progressive neuropathy
 * Other hereditary and idiopathic neuropathies
 * Morvan's disease
 * Nelaton's syndrome
 * Sensory neuropathy
 * Hereditary and idiopathic neuropathy, unspecified


 * Inflammatory polyneuropathy
 * Guillain-Barré syndrome
 * Serum neuropathy
 * Other inflammatory polyneuropathies
 * Inflammatory polyneuropathy, unspecified


 * Other polyneuropathies
 * Drug-induced polyneuropathy
 * Alcoholic polyneuropathy
 * Polyneuropathy due to other toxic agents
 * Other specified polyneuropathies
 * Polyneuropathy, unspecified
 * Neuropathy NOS


 * Polyneuropathy in diseases classified elsewhere
 * Other Disorders of peripheral nervous system

(G70-G73) Diseases of myoneural junction and muscle

 * Myasthenia gravis and other myoneural disorders
 * Myasthenia gravis
 * Toxic myoneural disorders
 * Congenital and developmental myasthenia
 * Primary disorders of muscles
 * Muscular dystrophy
 * benign muscular dystrophy (Becker muscular dystrophy)
 * benign scapuloperoneal muscular dystrophy with early contractures (Emery-Dreifuss muscular dystrophy)
 * distal muscular dystrophy
 * facioscapulohumeral muscular dystrophy
 * limb-girdle muscular dystrophy
 * ocular muscular dystrophy
 * oculopharyngeal muscular dystrophy
 * scapuloperoneal muscular dystrophy
 * severe muscular dystrophy (Duchenne muscular dystrophy)
 * Myotonic disorders
 * Dystrophia myotonica (Steinert)
 * chondrodystrophic myotonia
 * drug-induced myotonia
 * symptomatic myotonia
 * Myotonia congenita - NOS:
 * Myotonia congenita - dominant (Thomsen)
 * Myotonia congenita - recessive (Becker)
 * Neuromyotonia (Isaacs)
 * Paramyotonia congenita
 * Pseudomyotonia
 * Congenital myopathies, including:
 * Central core disease
 * Congenital muscular dystrophy
 * Centronuclear myopathy
 * Fibre-type disproportion
 * Minicore disease
 * Multicore disease
 * Myotubular myopathy
 * Nemaline myopathy
 * Mitochondrial myopathy, not elsewhere classified
 * Other myopathies
 * Drug-induced myopathy
 * Alcoholic myopathy
 * Myopathy due to other toxic agents
 * Periodic paralysis
 * Hypokalemic periodic paralysis
 * Hyperkalemic periodic paralysis
 * Disorders of myoneural junction and muscle in diseases classified elsewhere
 * Myasthenic syndromes in endocrine diseases
 * Eaton-Lambert syndrome
 * Other myasthenic syndromes in neoplastic disease
 * Myasthenic syndromes in other diseases classified elsewhere
 * Myopathy in infectious and parasitic diseases classified elsewhere
 * Myopathy in endocrine diseases
 * Myopathy in metabolic diseases
 * Myopathy in other diseases classified elsewhere

(G80-G83) Cerebral palsy and other paralytic syndromes

 * Cerebral palsy
 * Spastic quadriplegic cerebral palsy
 * Spastic diplegic cerebral palsy
 * Spastic hemiplegic cerebral palsy
 * Dyskinetic cerebral palsy
 * Ataxic cerebral palsy
 * Other cerebral palsy
 * Cerebral palsy, unspecified


 * Hemiplegia
 * Flaccid hemiplegia
 * Spastic hemiplegia
 * Hemiplegia, unspecified


 * Paraplegia and tetraplegia
 * Flaccid paraplegia
 * Spastic paraplegia
 * Paraplegia, unspecified
 * Paralysis of both lower limbs NOS
 * Paraplegia (lower) NOS
 * Flaccid tetraplegia
 * Spastic tetraplegia
 * Tetraplegia, unspecified
 * Quadriplegia NOS


 * Other paralytic syndromes
 * Diplegia of upper limbs
 * Monoplegia of lower limb
 * Monoplegia of upper limb
 * Monoplegia, unspecified
 * Cauda equina syndrome
 * Other specified paralytic syndromes
 * Paralytic syndrome, unspecified

(G90-G99) Other disorders of the nervous system

 * Disorders of autonomic nervous system
 * Idiopathic peripheral autonomic neuropathy
 * Familial dysautonomia (Riley-Day)
 * Horner's syndrome
 * Multi-system degeneration
 * Other disorders of autonomic nervous system
 * Disorder of autonomic nervous system, unspecified


 * Hydrocephalus
 * Toxic encephalopathy


 * Other disorders of brain
 * Cerebral cysts
 * Anoxic brain damage, not elsewhere classified
 * Benign intracranial hypertension
 * Postviral fatigue syndrome
 * Encephalopathy, unspecified
 * Compression of brain
 * Cerebral oedema
 * Reye's syndrome


 * Other disorders of brain in diseases classified elsewhere


 * Other diseases of spinal cord
 * Syringomyelia and syringobulbia
 * Vascular myelopathies
 * Cord compression, unspecified
 * Other specified diseases of spinal cord
 * Disease of spinal cord, unspecified
 * Myelopathy NOS


 * Other disorders of central nervous system
 * Postprocedural disorders of nervous system, not elsewhere classified
 * Other disorders of nervous system, not elsewhere classified
 * Other disorders of nervous system in diseases classified elsewhere