List of ICD-9 codes 320-359: diseases of the nervous system

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Contents

1 6a. Diseases of the nervous system (320-359)
2 See also

6a. Diseases of the nervous system (320-359)

inflammatory diseases of the central nervous system (320-327)

(320) Bacterial meningitis
- (320.0) Meningitis, hemophilus
- (320.9) Meningitis, bacterial, NOS

(321) Meningitis due to other organisms
- (321.0) Cryptococcal meningitis

(322) Meningitis of unspecified cause

(323) Encephalitis, myelitis, and encephalomyelitis
- (323.6) Postinfectious encephalitis
- (323.9) Encephalitis, unspec.

(324) Intracranial and intraspinal abscess

(325) Phlebitis and thrombophlebitis of intracranial venous sinuses
- (325.0) Venous sinus thrombosis, intracranial

(326) Late effects of intracranial abscess or pyogenic infection

(327) Sleep disorders
- (327.0) Organic insomnia
- (327.1) Organic hypersomnia
- (327.2) Organic sleep apnea
- (327.3) Circadian rhythm sleep disorder
- (327.4) Organic parasomnia
- (327.5) Organic sleep related movement disorders
  - (327.51) Periodic limb movement disorder
- (327.8) Other organic sleep disorders

hereditary and degenerative diseases of the central nervous system (330-337)

(330) Cerebral degenerations usually manifest in childhood
- (330.0) Leukodystrophy
  - Krabbe disease
  - Pelizaeus-Merzbacher disease
- (330.1) Cerebral lipidoses
  - Tay-Sachs disease

(331) Other cerebral degenerations
- (331.0) Alzheimer's
- (331.1) Pick's disease
- (331.2) Senile degeneration of brain
- (331.3) Communicating hydrocephalus
- (331.4) Obstructive hydrocephalus
- (331.5) Idiopathic normal pressure hydrocephalus
- (331.8) Other cerebral degeneration
  - (331.81) Reye's syndrome
  - (331.82) Dementia with Lewy bodies
  - (331.83) Mild cognitive impairment, so stated

(332) Parkinson's disease
- (332.0) Parkinsonism, primary

(333) Other extrapyramidal disease and abnormal movement disorders
- (333.0) Other degenerative diseases of the basal ganglia
  - Olivopontocerebellar atrophy
  - Shy-Drager syndrome
- (333.1) Essential tremor/familial tremor
- (333.2) Myoclonus
  - Lafora's disease
  - Unverricht disease
- (333.4) Huntington's chorea
- (333.8) Fragments of torsion dystonia
  - (333.81) Blepharospasm
- (333.9) Other and unspecified extrapyramidal diseases and abnormal movement disorders
  - (333.99) Other extrapyramidal diseases and abnormal movement disorders
    - Restless legs
    - Serotonin syndrome

(334) Spinocerebellar disease
- (334.0) Friedreich's ataxia
  - Spinocerebellar ataxia
- (334.1) Hereditary spastic paraplegia
- (334.2) Primary cerebellar degeneration
- (334.3) Other cerebellar ataxia
- (334.4) Cerebellar ataxia in diseases classified elsewhere
- (334.8) Other spinocerebellar diseases
  - Ataxia-telangiectasia [Louis-Bar syndrome]
  - Corticostriatal-spinal degeneration
- (334.9) Spinocerebellar disease unspecified

(335) Anterior horn cell disease
- (335.2) Motor neuron disease
  - (335.20) Amyotrophic lateral sclerosis
  - (335.21) Progressive muscular atrophy
  - (335.22) Progressive bulbar palsy
  - (335.23) Pseudobulbar palsy
  - (335.24) Primary lateral sclerosis
  - (335.29) Other motor neuron diseases

(336) Other diseases of spinal cord
- (336.0) Syringomyelia and syringobulbia

(337) Disorders of the autonomic nervous system
- (337.0) Idiopathic peripheral autonomic neuropathy
  - (337.00) Idiopathic peripheral autonomic neuropathy, unspecified
  - (337.01) Carotid sinus syndrome
  - (337.09) Other idiopathic peripheral autonomic neuropathy
- (337.1) Peripheral autonomic neuropathy in disorders classified elsewhere
- (337.2) Reflex sympathetic dystrophy
- (337.3) Autonomic dysreflexia
- (337.9) Unspecified disorder of autonomic nervous system

pain (338-338)

(338) Pain, not elsewhere classified
- (338.0) Central pain syndrome
- (338.1) Acute pain
- (338.2) Chronic pain
- (338.3) Neoplasm related pain (acute) (chronic)
- (338.4) Chronic pain syndrome

Other headache syndromes (339-339)

(339) Other headache syndromes
- (339.0) Cluster headaches and other trigeminal autonomic cephalgias
  - (339.00) Cluster headache syndrome, unspecified
  - (339.01) Episodic cluster headache
  - (339.02) Chronic cluster headache
  - (339.03) Episodic paroxysmal hemicrania
  - (339.04) Chronic paroxysmal hemicrania
  - (339.05) Short lasting unilateral neuralgiform headache with conjunctival injection and tearing
  - (339.09) Other trigeminal autonomic cephalgias
- (339.1) Tension type headache
  - (339.10) Tension type headache, unspecified
  - (339.11) Episodic tension type headache
  - (339.12) Chronic tension type headache
- (339.2) Post-traumatic headache
  - (339.20) Post-traumatic headache, unspecified
  - (339.21) Acute post-traumatic headache
  - (339.22) Chronic post-traumatic headache
- (339.3) Drug induced headache, not elsewhere classified
- (339.4) Complicated headache syndromes
  - (339.41) Hemicrania continua
  - (339.42) New daily persistent headache
  - (339.43) Primary thunderclap headache
  - (339.44) Other complicated headache syndrome
- (339.8) Other specified headache syndromes
  - (339.81) Hypnic headache
  - (339.82) Headache associated with sexual activity
  - (339.83) Primary cough headache
  - (339.84) Primary exertional headache
  - (339.85) Primary stabbing headache
  - (339.89) Other headache syndromes

other disorders of the central nervous system (340-349)

(340) Multiple sclerosis

(341) Other demyelinating diseases of central nervous system
- (341.0) Neuromyelitis optica
- (341.1) Schilder's disease
- (341.2) Acute myelitis (transverse myelitis)

(342) Hemiplegia
- (342.0) Hemiplegia, flaccid
- (342.1) Hemiplegia, spastic

(343) Infantile cerebral palsy

(344) Other paralytic syndromes
- (344.0) Quadraplegia and quadraparesis
- (344.1) Paraplegia
- (344.2) Diplegia of upper limbs
- (344.3) Monoplegia of lower limb
- (344.4) Monoplegia of upper limb
- (344.5) Unspecified monoplegia
- (344.6) Cauda equina syndrome
- (344.8) Other specified paralytic syndromes
  - (344.81) Locked-in state
- (344.9) Paralysis unspecified

(345) Epilepsy

(346) Migraine

(347) Cataplexy and narcolepsy
- (347.0) Narcolepsy, w/o cataplexy

(348) Other conditions of brain
- (348.0) Cerebral cysts
- (348.1) Anoxic brain damage
- (348.2) Pseudotumor cerebri
- (348.3) Encephalopathy, unspec.
  - (348.31) Encephalopathy, metabolic
- (348.4) Compression of brain
- (348.5) Cerebral edema

(349) Other and unspecified disorders of the nervous system
- (349.0) Headache, post spinal puncture
  - Post dural puncture headache
- (349.8) Other specified disorders of nervous system
  - (349.81) Cerebrospinal fluid rhinorrhea
  - (349.82) Toxic encephalopathy

disorders of the peripheral nervous system (350-359)

(350) Trigeminal nerve disorders
- (350.1) Trigeminal neuralgia

(351) Facial nerve disorders
- (351.0) Bell's palsy

(352) Disorders of other cranial nerves

(353) Nerve root and plexus disorders
- (353.0) Thoracic outlet syndrome
- (353.6) Phantom limb

(354) Mononeuritis of upper limb and mononeuritis multiplex
- (354.0) Carpal tunnel

(355) Mononeuritis of lower limb
- (355.0) Lesion of sciatic nerve
- (355.1) Meralgia paresthetica
- (355.2) Other lesion of femoral nerve
- (355.3) Lesion of lateral popliteal nerve
- (355.4) Lesion of medial popliteal nerve
- (355.5) Tarsal tunnel syndrome
- (355.6) Lesion of plantar nerve
  - Morton's neuroma
- (355.7) Other mononeuritis of lower limb
- (355.8) Mononeuritis of lower limb unspecified
- (355.9) Mononeuritis of unspecified site

(356) Hereditary and idiopathic peripheral neuropathy

(357) Inflammatory and toxic neuropathy

(358) Myoneural disorders
- (358.0) Myasthenia gravis w/o exacerbation
  - (358.01) Myasthenia gravis w/ exacerbation

(359) Muscular dystrophies and other myopathies
- (359.0) Congenital hereditary myopathies, including:
- (359.1) Muscular dyst., hereditary

See also

Pathology: Medical conditions and ICD code

(Disease / Disorder / Illness, Syndrome / Sequence, Symptom / Sign, Injury, etc.)

Infectious disease/Infection: Bacterial disease (G+, G-) · Virus disease · Parasitic disease (Protozoan infection, Helminthiasis, Ectoparasitic infestation) · Mycosis · Zoonosis

(C/D,
140-239 & 280-289)

Cancer (C00-D48, 140-239)	Tumor
Myeloid hematologic (D50-D77, 280-289)	Anemia · Coagulopathy
Lymphoid immune (D80-D89, 279)	Immunodeficiency · Immunoproliferative disorder · Hypersensitivity

Endocrine disease · Nutrition disorder · Inborn error of metabolism

Mental disorder

Nervous system disease (CNS, PNS) · Neuromuscular disease

Eye disease · Ear disease

Cardiovascular disease (Heart disease, Vascular disease)

Respiratory disease (Obstructive lung disease, Restrictive lung disease, Pneumonia)

Stomatognathic disease (Tooth disease) · Digestive disease (Esophageal, Stomach, Enteropathy, Liver, Pancreatic)

Skin disease · skin appendages (Nail disease, Hair disease, Sweat gland disease)

Musculoskeletal disorders: Myopathy · Arthropathy · Osteochondropathy (Osteopathy, Chondropathy)

Urologic disease (Nephropathy, Urinary bladder disease) · Male genital disease · Breast disease · Female genital disease

Complications of pregnancy · Obstetric labor complication · Puerperal disorder

Congenital disorder (Congenital abnormality)

Syndromes · Medical signs (Eponymous)

Bone fracture · Joint dislocation · Sprain · Strain · Subluxation · Head injury · Chest trauma · Poisoning

Diseases of meninges (G00–G03, 320–322)

Meningitis/Arachnoiditis: Bacterial (Tuberculous, Haemophilus, Pneumococcal) · Viral (Herpesviral) · Fungal (Cryptococcal) · Aseptic (Drug-induced) Meningoencephalitis

anat(s,m,p,4,e,b,d,c,a,f,l,g)/phys/devp/cell

noco(m,d,e,h,v,s)/cong/tumr,sysi/epon,injr

proc,drug(N1A/2AB/C/3/4/7A/B/C/D)

Pathology of the nervous system, primarily CNS (G04–G47, 323–349)

Brain	Encephalitis (Viral encephalitis, Herpesviral encephalitis) · Cavernous sinus thrombosis · Brain abscess (Amoebic)
Spinal cord	Myelitis: Poliomyelitis · Demyelinating disease (Transverse myelitis) · Tropical spastic paraparesis · Epidural abscess
Both/either	Encephalomyelitis (Acute disseminated) Meningoencephalitis

Brain/
encephalopathy

Extrapyramidal and movement disorders	Basal ganglia disease: Parkinsonism (PD, Postencephalitic, NMS) · PKAN · Tauopathy (PSP) · Striatonigral degeneration · Hemiballismus · HD · OA Dyskinesia: Dystonia (Status dystonicus, Spasmodic torticollis, Meige's, Blepharospasm) · Chorea (Choreoathetosis) · Myoclonus (Myoclonic epilepsy) · Akathesia Tremor (Essential tremor, Intention tremor) · Restless legs · Stiff person
Dementia	Tauopathy: Alzheimer's (Early-onset) · Frontotemporal dementia/Frontotemporal lobar degeneration (Pick's, Dementia with Lewy bodies) Multi-infarct dementia
Mitochondrial disease	Leigh's

autoimmune (Multiple sclerosis, Neuromyelitis optica, Schilder's disease) · hereditary (Adrenoleukodystrophy, Alexander, Canavan, Krabbe, ML, PMD, VWM, MFC, CAMFAK syndrome) · Central pontine myelinolysis · Marchiafava-Bignami disease · Alpers' disease

Episodic/
paroxysmal

Seizure/epilepsy	Focal · Generalised · Status epilepticus · Myoclonic epilepsy
Headache	Migraine (Familial hemiplegic) · Cluster · Tension
Cerebrovascular	TIA (Amaurosis fugax, Transient global amnesia) Stroke (MCA, ACA, PCA, Foville's, Millard-Gubler, Lateral medullary, Weber's, Lacunar stroke)
Sleep disorders	Insomnia · Hypersomnia · Sleep apnea (Obstructive, Ondine's curse) · Narcolepsy · Cataplexy · Kleine-Levin · Circadian rhythm sleep disorder (Advanced sleep phase syndrome, Delayed sleep phase syndrome, Non-24-hour sleep-wake syndrome, Jet lag)

Intracranial hypertension (Hydrocephalus/NPH, Idiopathic intracranial hypertension) · Cerebral edema · Intracranial hypotension

Other

Brain herniation · Reye's · Hepatic encephalopathy · Toxic encephalopathy

Spinal cord/
myelopathy

Syringomyelia · Syringobulbia · Morvan's syndrome · Vascular myelopathy (Foix-Alajouanine syndrome) · Spinal cord compression

Both/either

SA	Friedreich's ataxia · Ataxia telangiectasia
MND	UMN only: PLS · PP · HSP LMN only: PMA · PBP (Fazio-Londe, Infantile progressive bulbar palsy) · SMA (SMN-linked, Kennedy disease, SMAX2, DSMA1) both: ALS

anat(s,m,p,4,e,b,d,c,a,f,l,g)/phys/devp/cell

noco(m,d,e,h,v,s)/cong/tumr,sysi/epon,injr

proc,drug(N1A/2AB/C/3/4/7A/B/C/D)

Psychophysiology: Sleep and sleep disorders (F51 and G47, 307.4 and 327)

Sleep stages

Rapid eye movement sleep · Non-rapid eye movement sleep · Slow-wave sleep

Alpha wave · Beta wave · Gamma wave · Delta wave · Theta rhythm · K-complex

Sleep
disorders

Dyssomnia	Insomnia · Narcolepsy · Sleep apnea (Obesity hypoventilation syndrome, Ondine's curse) · Hypersomnia · Kleine-Levin syndrome · Sleep state misperception
Circadian rhythm sleep disorder	Advanced sleep phase syndrome · Delayed sleep phase syndrome · Non-24-hour sleep-wake syndrome · Jet lag
Parasomnia	Night terror · Sleepwalking · Somniloquy
Other/ungrouped	Night eating syndrome · Nocturia · Nocturnal myoclonus ·

Benign
phenomena

Dream · Exploding head syndrome · False awakening · Hypnagogia · Hypnic jerk · Lucid dream · Nightmare · Nocturnal emission · Nocturnal penile tumescence · Sleep paralysis · Somnolence

Related
topics

Bed (Bunk bed, Four poster bed, Futon, Daybed, Hammock, Mattress, Sleeping bag) · Bed bug · Bedding · Bedroom · Bedtime · Bedtime toy · Bedtime story · Caffeine nap · Chronotype · Dream journal · Hypnopompic state · Lullaby · Methods of falling asleep · Microsleep · Nap · Nightwear · Polyphasic sleep · Polysomnography · Power nap · Second wind · Siesta · Sleep and creativity · Sleep and learning · Sleep debt · Sleep deprivation · Sleep diary · Sleep inertia · Sleep medicine · Sleeping while on duty · Sleepover · Snoring · Excessive daytime sleepiness · ("Sleeping sickness", which is not a sleep disorder.)

dsrd (o, p, m, p, a, d, s), sysi/epon, spvo

proc, drug(N5A/5B/5C/6A/6B/6D)

anat(s,m,p,4,e,b,d,c,a,f,l,g)/phys/devp/cell

noco(m,d,e,h,v,s)/cong/tumr,sysi/epon,injr

proc,drug(N1A/2AB/C/3/4/7A/B/C/D)

Autonomic diseases, Dysautonomia, autonomic- neuropathy (G90, 337)

I · II · III/Familial dysautonomia · IV/Congenital insensitivity to pain with anhidrosis · V

Orthostatic intolerance

Postural orthostatic tachycardia syndrome · Orthostatic hypotension

Other

Horner's syndrome · Multiple system atrophy · Pure autonomic failure · Autonomic dysreflexia

anat(h, r, t, c, b, l, s)/phys/devp

noco/auto/cong/tumr, sysi/epon, injr

proc, drug(N1B)

CNS disease: Headache (G43-G44, 339, 346)

ICHD 1	Migraine (Familial hemiplegic) · Retinal migraine
ICHD 2	Tension
ICHD 3	Cluster · Chronic paroxysmal hemicrania
ICHD 4	Hemicrania continua · Thunderclap headache · Coital cephalalgia · New daily persistent headache · Hypnic headache

ICHD 7	Ictal headache · Post dural puncture headache
ICHD 8	Hangover · Medication overuse headache

Trigeminal neuralgia · Occipital neuralgia · External compression headache · Cold-stimulus headache · Optic neuritis · Postherpetic neuralgia · Tolosa-Hunt syndrome

Other

anat(s,m,p,4,e,b,d,c,a,f,l,g)/phys/devp/cell

noco(m,d,e,h,v,s)/cong/tumr,sysi/epon,injr

proc,drug(N1A/2AB/C/3/4/7A/B/C/D)

Multiple sclerosis and other demyelinating diseases of CNS (G35–G37, 340–341)

Signs and symptoms

Ataxia · Depression · Diplopia · Dysarthria · Dysphagia · Fatigue · Incontinence · Neurological fatigue · Nystagmus · Optic neuritis · Pain · Uhthoff's phenomenon · Dawson's fingers

Diagnosis and evolution following

McDonald criteria · Poser criteria · EDSS · Clinically isolated syndrome

Investigation

Pathophysiology · Experimental autoimmune encephalomyelitis

Interferon · Glatiramer acetate · Mitoxantrone · Natalizumab · Therapies under investigation

Borderline forms

Acute disseminated encephalomyelitis · Balo concentric sclerosis · Neuromyelitis optica · Guillain-Barré syndrome · Marburg multiple sclerosis · Schilder's disease · Tumefactive multiple sclerosis

Other

List of people with multiple sclerosis · List of multiple sclerosis organizations

anat(s,m,p,4,e,b,d,c,a,f,l,g)/phys/devp/cell

noco(m,d,e,h,v,s)/cong/tumr,sysi/epon,injr

proc,drug(N1A/2AB/C/3/4/7A/B/C/D)

Cerebral palsy and other syndromes (G80-G83, 342-344)

Paresis and plegia NOS

Paralysis · Quadriplegia · Triplegia · Hemiplegia/Hemiparesis · Paraplegia/Diplegia · Monoplegia

Flaccid vs. spastic

Upper motor neuron lesion: Pseudobulbar palsy · Spastic diplegia · Spastic paraplegia · Hereditary Spastic Paraplegia
Lower motor neuron lesion: Bulbar palsy · Flaccid paralysis

Specific types

Cerebral palsy · Cauda equina syndrome · Locked-in syndrome

anat(s,m,p,4,e,b,d,c,a,f,l,g)/phys/devp/cell

noco(m,d,e,h,v,s)/cong/tumr,sysi/epon,injr

proc,drug(N1A/2AB/C/3/4/7A/B/C/D)

Nervous system pathology, PNS, Somatic (G50–G64, 350–357)

Nerve, nerve root, plexus

Cranial nerve
disease

V (Trigeminal neuralgia) · VII (Facial nerve paralysis, Bell's palsy, Melkersson–Rosenthal syndrome, Central seven) · XI (Accessory nerve disorder)

Radiculopathy,
plexopathy

brachial plexus (Brachial plexus lesion, Thoracic outlet syndrome) · Phantom limb

Mono-
neuropathy

Upper limb	median nerve (Carpal tunnel syndrome, Ape hand deformity) ulnar nerve (Ulnar nerve entrapment, Froment's sign, Guyon's canal syndrome, Ulnar claw) radial nerve (Radial neuropathy, Wrist drop, Cheiralgia paresthetica) long thoracic nerve (Winged scapula)
Lower limb	lateral cutaneous nerve of thigh (Meralgia paraesthetica) tibial nerve (Tarsal tunnel syndrome) plantar nerve (Morton's neuroma) superior gluteal nerve (Trendelenburg's sign) sciatic nerve (Piriformis syndrome)
General	Causalgia · Mononeuritis multiplex · Neuropathy (Neuralgia/Neuritis) · Nerve compression syndrome

Polyneuropathies/Polyradiculoneuropathy

HMSN	Charcot-Marie-Tooth disease · Dejerine-Sottas disease · Refsum's disease · Hereditary spastic paraplegia
Autoimmune/demyelinating	Guillain–Barré syndrome · Chronic inflammatory demyelinating polyneuropathy
Other	Alcoholic polyneuropathy

anat(h, r, t, c, b, l, s)/phys/devp

noco/auto/cong/tumr, sysi/epon, injr

proc, drug(N1B)

Diseases of myoneural junction and muscle / neuromuscular disease (G70-G73, 358-359)

Neuromuscular-
junction disease

autoimmune (Myasthenia gravis, Lambert–Eaton myasthenic syndrome)

Myopathy/
congenital myopathy

Muscular dystrophy
(DAPC)

AD	Limb-girdle muscular dystrophy 1 · Oculopharyngeal · Facioscapulohumeral · Myotonic · Distal (most)
AR	Limb-girdle muscular dystrophy 2 · Congenital (Fukuyama, Ullrich, Walker-Warburg)
XR	dystrophin (Becker's, Duchenne) · Emerin Emery-Dreifuss

Other structural

collagen disease (Bethlem myopathy) · PTP disease (X-linked MTM) · adaptor protein disease (BIN1-linked centronuclear myopathy) · cytoskeleton disease (Nemaline myopathy, Zaspopathy)

Myotonia	Myotonia congenita · Thomsen disease · Neuromyotonia/Isaacs syndrome · Paramyotonia congenita
Periodic paralysis	Hypokalemic · Hyperkalemic
Other	Central core disease

Mitochondrial myopathy

MELAS · MERRF · KSS · PEO

Other

Inflammatory myopathy

M: MUS, DF+DRCT

anat (h/n, u, t/d, a/p, l)/phys/hist

noco(m, s, c)/cong(d)/tumr, sysi/epon, injr

proc, drug (M1A/3)

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