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 cla**ified 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 cla**ified 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 cla**ified
(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 cla**ified
(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 a**ociated with s**ual 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
(343.0) Cerebral palsy, paraplegic, congenital
(343.1) Cerebral palsy, hemiplegic, congenital
(343.2) Cerebral palsy, quadriplegic
(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
(345.0) Epilepsy, absence, w/o intractable epilepsy
(345.1) Epilepsy, tonic-clonic, w/o status
(345.3) Epilepsy, status
(345.4) Epilepsy, temporal lobe, w/o status
(345.9) Epilepsy, unspec., w/o status
(346) Migraine
(346.0) Migraine, cla**ical, not intractable
(346.1) Migraine, common, not intractable
(346.2) Headaches, cluster, not intractable
(346.9) Migraine, unspec., not intractable
(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 syndrome
(354.1) Other lesion of median nerve
(354.2) Lesion of ulnar nerve
(354.3) Lesion of radial nerve
(354.4) Causalgia of upper limb
(354.5) Mononeuritis multiplex
(354.8) Other mononeuritis of upper limb
(354.9) Mononeuritis of upper limb unspecified
(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
(357.0) Guillain-Barré syndrome
(357.5) Neuropathy, poly-, alcoholic
(357.9) Neuropathy, poly-, unspec.
(358) Myoneural disorders
(358.0) Myasthenia gravis
(358.01) Myasthenia gravis without (acute) exacerbation
(358.02) Myasthenia gravis with (acute) exacerbation
(358.1) Myasthenic syndromes in diseases cla**ified elsewhere
(358.2) Toxic myoneural disorders
(358.8) Other specified myoneural disorders
(358.9) Myoneural disorders unspecified
(359) Muscular dystrophies and other myopathies
(359.0) Congenital hereditary myopathies, including:
-Benign congenital myopathy
-Central core disease
-Centronuclear myopathy
-Myotubular myopathy
-Nemaline body disease
(359.1) Muscular dyst., hereditary