Chapter 6: Diseases of the nervous system (G00–G99)
502 diagnoses listed as covered by Medicare billing and coding articles for HCPCS Level II codes. All chapters.
G00: Bacterial meningitis, not elsewhere classified
- G00.0 — Hemophilus meningitis
- G00.1 — Pneumococcal meningitis
- G00.2 — Streptococcal meningitis
- G00.8 — Other bacterial meningitis
- G00.9 — Bacterial meningitis, unspecified
G03: Meningitis due to other and unspecified causes
- G03.0 — Nonpyogenic meningitis
- G03.9 — Meningitis, unspecified
G04: Encephalitis, myelitis and encephalomyelitis
- G04.01 — Postinfectious acute disseminated encephalitis and encephalomyelitis…
- G04.02 — Postimmunization acute disseminated encephalitis, myelitis and…
- G04.1 — Tropical spastic paraplegia
- G04.30 — Acute necrotizing hemorrhagic encephalopathy, unspecified
- G04.31 — Postinfectious acute necrotizing hemorrhagic encephalopathy
- G04.32 — Postimmunization acute necrotizing hemorrhagic encephalopathy
- G04.39 — Other acute necrotizing hemorrhagic encephalopathy
- G04.81 — Other encephalitis and encephalomyelitis
- G04.82 — Acute flaccid myelitis
- G04.89 — Other myelitis
- G04.90 — Encephalitis and encephalomyelitis, unspecified
- G04.91 — Myelitis, unspecified
G05: Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere
- G05.3 — Encephalitis and encephalomyelitis in diseases classified elsewhere
- G05.4 — Myelitis in diseases classified elsewhere
G06: Intracranial and intraspinal abscess and granuloma
- G06.0 — Intracranial abscess and granuloma
- G06.1 — Intraspinal abscess and granuloma
G08: Intracranial and intraspinal phlebitis and thrombophlebitis
- G08 — Intracranial and intraspinal phlebitis and thrombophlebitis
G10: Huntington's disease
- G10 — Huntington's disease
G11: Hereditary ataxia
- G11.0 — Congenital nonprogressive ataxia
- G11.10 — Early-onset cerebellar ataxia, unspecified
- G11.11 — Friedreich ataxia
- G11.19 — Other early-onset cerebellar ataxia
- G11.2 — Late-onset cerebellar ataxia
- G11.3 — Cerebellar ataxia with defective DNA repair
- G11.4 — Hereditary spastic paraplegia
- G11.8 — Other hereditary ataxias
- G11.9 — Hereditary ataxia, unspecified
G12: Spinal muscular atrophy and related syndromes
- G12.0 — Infantile spinal muscular atrophy, type I [Werdnig-Hoffman]
- G12.1 — Other inherited spinal muscular atrophy
- G12.20 — Motor neuron disease, unspecified
- G12.21 — Amyotrophic lateral sclerosis
- G12.22 — Progressive bulbar palsy
- G12.23 — Primary lateral sclerosis
- G12.24 — Familial motor neuron disease
- G12.25 — Progressive spinal muscle atrophy
- G12.29 — Other motor neuron disease
- G12.8 — Other spinal muscular atrophies and related syndromes
- G12.9 — Spinal muscular atrophy, unspecified
G13: Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere
- G13.0 — Paraneoplastic neuromyopathy and neuropathy
- G13.1 — Other systemic atrophy primarily affecting central nervous system in…
G14: Postpolio syndrome
G20: Parkinson's disease
- G20.A1 — Parkinson's disease without dyskinesia, without mention of…
- G20.A2 — Parkinson's disease without dyskinesia, with fluctuations
- G20.B1 — Parkinson's disease with dyskinesia, without mention of fluctuations
- G20.B2 — Parkinson's disease with dyskinesia, with fluctuations
- G20.C — Parkinsonism, unspecified
G21: Secondary parkinsonism
- G21.0 — Malignant neuroleptic syndrome
- G21.11 — Neuroleptic induced parkinsonism
- G21.19 — Other drug induced secondary parkinsonism
- G21.2 — Secondary parkinsonism due to other external agents
- G21.3 — Postencephalitic parkinsonism
- G21.4 — Vascular parkinsonism
- G21.8 — Other secondary parkinsonism
- G21.9 — Secondary parkinsonism, unspecified
G23: Other degenerative diseases of basal ganglia
- G23.1 — Progressive supranuclear ophthalmoplegia [Steele-Richardson-Olszewski]
G24: Dystonia
- G24.01 — Drug induced subacute dyskinesia
- G24.02 — Drug induced acute dystonia
- G24.09 — Other drug induced dystonia
- G24.1 — Genetic torsion dystonia
- G24.2 — Idiopathic nonfamilial dystonia
- G24.3 — Spasmodic torticollis
- G24.4 — Idiopathic orofacial dystonia
- G24.5 — Blepharospasm
- G24.8 — Other dystonia
- G24.9 — Dystonia, unspecified
G25: Other extrapyramidal and movement disorders
- G25.0 — Essential tremor
- G25.1 — Drug-induced tremor
- G25.2 — Other specified forms of tremor
- G25.3 — Myoclonus
- G25.61 — Drug induced tics
- G25.69 — Other tics of organic origin
- G25.70 — Drug induced movement disorder, unspecified
- G25.71 — Drug induced akathisia
- G25.79 — Other drug induced movement disorders
- G25.81 — Restless legs syndrome
- G25.82 — Stiff-man syndrome
- G25.89 — Other specified extrapyramidal and movement disorders
- G25.9 — Extrapyramidal and movement disorder, unspecified
G26: Extrapyramidal and movement disorders in diseases classified elsewhere
- G26 — Extrapyramidal and movement disorders in diseases classified elsewhere
G30: Alzheimer's disease
- G30.0 — Alzheimer's disease with early onset
- G30.1 — Alzheimer's disease with late onset
- G30.8 — Other Alzheimer's disease
- G30.9 — Alzheimer's disease, unspecified
G31: Other degenerative diseases of nervous system, not elsewhere classified
- G31.01 — Pick's disease
- G31.09 — Other frontotemporal neurocognitive disorder
- G31.1 — Senile degeneration of brain, not elsewhere classified
- G31.80 — Leukodystrophy, unspecified
- G31.83 — Neurocognitive disorder with Lewy bodies
- G31.84 — Mild cognitive impairment of uncertain or unknown etiology
- G31.85 — Corticobasal degeneration
- G31.86 — Alexander disease
- G31.87 — Primary progressive apraxia of speech
- G31.9 — Degenerative disease of nervous system, unspecified
G32: Other degenerative disorders of nervous system in diseases classified elsewhere
- G32.0 — Subacute combined degeneration of spinal cord in diseases classified…
- G32.81 — Cerebellar ataxia in diseases classified elsewhere
G35: Multiple sclerosis
- G35.A — Relapsing-remitting multiple sclerosis
- G35.B0 — Primary progressive multiple sclerosis, unspecified
- G35.B1 — Active primary progressive multiple sclerosis
- G35.B2 — Non-active primary progressive multiple sclerosis
- G35.C0 — Secondary progressive multiple sclerosis, unspecified
- G35.C1 — Active secondary progressive multiple sclerosis
- G35.C2 — Non-active secondary progressive multiple sclerosis
- G35.D — Multiple sclerosis, unspecified
G36: Other acute disseminated demyelination
- G36.0 — Neuromyelitis optica [Devic]
- G36.1 — Acute and subacute hemorrhagic leukoencephalitis [Hurst]
- G36.8 — Other specified acute disseminated demyelination
- G36.9 — Acute disseminated demyelination, unspecified
G37: Other demyelinating diseases of central nervous system
- G37.0 — Diffuse sclerosis of central nervous system
- G37.1 — Central demyelination of corpus callosum
- G37.2 — Central pontine myelinolysis
- G37.3 — Acute transverse myelitis in demyelinating disease of central…
- G37.4 — Subacute necrotizing myelitis of central nervous system
- G37.5 — Concentric sclerosis [Balo] of central nervous system
- G37.81 — Myelin oligodendrocyte glycoprotein antibody disease
- G37.89 — Other specified demyelinating diseases of central nervous system
- G37.9 — Demyelinating disease of central nervous system, unspecified
G40: Epilepsy and recurrent seizures
- G40.001 — Localization-related (focal) (partial) idiopathic epilepsy and…
- G40.009 — Localization-related (focal) (partial) idiopathic epilepsy and…
- G40.011 — Localization-related (focal) (partial) idiopathic epilepsy and…
- G40.019 — Localization-related (focal) (partial) idiopathic epilepsy and…
- G40.101 — Localization-related (focal) (partial) symptomatic epilepsy and…
- G40.109 — Localization-related (focal) (partial) symptomatic epilepsy and…
- G40.111 — Localization-related (focal) (partial) symptomatic epilepsy and…
- G40.119 — Localization-related (focal) (partial) symptomatic epilepsy and…
- G40.201 — Localization-related (focal) (partial) symptomatic epilepsy and…
- G40.209 — Localization-related (focal) (partial) symptomatic epilepsy and…
- G40.211 — Localization-related (focal) (partial) symptomatic epilepsy and…
- G40.219 — Localization-related (focal) (partial) symptomatic epilepsy and…
- G40.301 — Generalized idiopathic epilepsy and epileptic syndromes, not…
- G40.309 — Generalized idiopathic epilepsy and epileptic syndromes, not…
- G40.311 — Generalized idiopathic epilepsy and epileptic syndromes…
- G40.319 — Generalized idiopathic epilepsy and epileptic syndromes…
- G40.401 — Other generalized epilepsy and epileptic syndromes, not intractable…
- G40.409 — Other generalized epilepsy and epileptic syndromes, not intractable…
- G40.411 — Other generalized epilepsy and epileptic syndromes, intractable…
- G40.419 — Other generalized epilepsy and epileptic syndromes, intractable…
- G40.42 — Cyclin-Dependent Kinase-Like 5 Deficiency Disorder
- G40.501 — Epileptic seizures related to external causes, not intractable, with…
- G40.509 — Epileptic seizures related to external causes, not intractable…
- G40.801 — Other epilepsy, not intractable, with status epilepticus
- G40.802 — Other epilepsy, not intractable, without status epilepticus
- G40.803 — Other epilepsy, intractable, with status epilepticus
- G40.804 — Other epilepsy, intractable, without status epilepticus
- G40.811 — Lennox-Gastaut syndrome, not intractable, with status epilepticus
- G40.812 — Lennox-Gastaut syndrome, not intractable, without status epilepticus
- G40.813 — Lennox-Gastaut syndrome, intractable, with status epilepticus
- G40.814 — Lennox-Gastaut syndrome, intractable, without status epilepticus
- G40.821 — Epileptic spasms, not intractable, with status epilepticus
- G40.822 — Epileptic spasms, not intractable, without status epilepticus
- G40.823 — Epileptic spasms, intractable, with status epilepticus
- G40.824 — Epileptic spasms, intractable, without status epilepticus
- G40.833 — Dravet syndrome, intractable, with status epilepticus
- G40.834 — Dravet syndrome, intractable, without status epilepticus
- G40.841 — KCNQ2-related epilepsy, not intractable, with status epilepticus
- G40.842 — KCNQ2-related epilepsy, not intractable, without status epilepticus
- G40.843 — KCNQ2-related epilepsy, intractable, with status epilepticus
- G40.844 — KCNQ2-related epilepsy, intractable, without status epilepticus
- G40.89 — Other seizures
- G40.901 — Epilepsy, unspecified, not intractable, with status epilepticus
- G40.909 — Epilepsy, unspecified, not intractable, without status epilepticus
- G40.911 — Epilepsy, unspecified, intractable, with status epilepticus
- G40.919 — Epilepsy, unspecified, intractable, without status epilepticus
- G40.A01 — Absence epileptic syndrome, not intractable, with status epilepticus
- G40.A09 — Absence epileptic syndrome, not intractable, without status…
- G40.A11 — Absence epileptic syndrome, intractable, with status epilepticus
- G40.A19 — Absence epileptic syndrome, intractable, without status epilepticus
- G40.B01 — Juvenile myoclonic epilepsy, not intractable, with status epilepticus
- G40.B09 — Juvenile myoclonic epilepsy, not intractable, without status…
- G40.B11 — Juvenile myoclonic epilepsy, intractable, with status epilepticus
- G40.B19 — Juvenile myoclonic epilepsy, intractable, without status epilepticus
G43: Migraine
- G43.001 — Migraine without aura, not intractable, with status migrainosus
- G43.009 — Migraine without aura, not intractable, without status migrainosus
- G43.011 — Migraine without aura, intractable, with status migrainosus
- G43.019 — Migraine without aura, intractable, without status migrainosus
- G43.101 — Migraine with aura, not intractable, with status migrainosus
- G43.109 — Migraine with aura, not intractable, without status migrainosus
- G43.111 — Migraine with aura, intractable, with status migrainosus
- G43.119 — Migraine with aura, intractable, without status migrainosus
- G43.401 — Hemiplegic migraine, not intractable, with status migrainosus
- G43.409 — Hemiplegic migraine, not intractable, without status migrainosus
- G43.411 — Hemiplegic migraine, intractable, with status migrainosus
- G43.419 — Hemiplegic migraine, intractable, without status migrainosus
- G43.501 — Persistent migraine aura without cerebral infarction, not…
- G43.509 — Persistent migraine aura without cerebral infarction, not…
- G43.511 — Persistent migraine aura without cerebral infarction, intractable…
- G43.519 — Persistent migraine aura without cerebral infarction, intractable…
- G43.601 — Persistent migraine aura with cerebral infarction, not intractable…
- G43.609 — Persistent migraine aura with cerebral infarction, not intractable…
- G43.611 — Persistent migraine aura with cerebral infarction, intractable, with…
- G43.619 — Persistent migraine aura with cerebral infarction, intractable…
- G43.701 — Chronic migraine without aura, not intractable, with status…
- G43.709 — Chronic migraine without aura, not intractable, without status…
- G43.711 — Chronic migraine without aura, intractable, with status migrainosus
- G43.719 — Chronic migraine without aura, intractable, without status migrainosus
- G43.801 — Other migraine, not intractable, with status migrainosus
- G43.809 — Other migraine, not intractable, without status migrainosus
- G43.811 — Other migraine, intractable, with status migrainosus
- G43.819 — Other migraine, intractable, without status migrainosus
- G43.821 — Menstrual migraine, not intractable, with status migrainosus
- G43.829 — Menstrual migraine, not intractable, without status migrainosus
- G43.831 — Menstrual migraine, intractable, with status migrainosus
- G43.839 — Menstrual migraine, intractable, without status migrainosus
- G43.901 — Migraine, unspecified, not intractable, with status migrainosus
- G43.909 — Migraine, unspecified, not intractable, without status migrainosus
- G43.911 — Migraine, unspecified, intractable, with status migrainosus
- G43.919 — Migraine, unspecified, intractable, without status migrainosus
- G43.A0 — Cyclical vomiting, in migraine, not intractable
- G43.A1 — Cyclical vomiting, in migraine, intractable
- G43.B0 — Ophthalmoplegic migraine, not intractable
- G43.B1 — Ophthalmoplegic migraine, intractable
- G43.C0 — Periodic headache syndromes in child or adult, not intractable
- G43.C1 — Periodic headache syndromes in child or adult, intractable
- G43.D0 — Abdominal migraine, not intractable
- G43.D1 — Abdominal migraine, intractable
- G43.E01 — Chronic migraine with aura, not intractable, with status migrainosus
- G43.E09 — Chronic migraine with aura, not intractable, without status…
- G43.E11 — Chronic migraine with aura, intractable, with status migrainosus
- G43.E19 — Chronic migraine with aura, intractable, without status migrainosus
G44: Other headache syndromes
- G44.209 — Tension-type headache, unspecified, not intractable
G45: Transient cerebral ischemic attacks and related syndromes
- G45.0 — Vertebro-basilar artery syndrome
- G45.1 — Carotid artery syndrome (hemispheric)
- G45.2 — Multiple and bilateral precerebral artery syndromes
- G45.3 — Amaurosis fugax
- G45.8 — Other transient cerebral ischemic attacks and related syndromes
- G45.9 — Transient cerebral ischemic attack, unspecified
G46: Vascular syndromes of brain in cerebrovascular diseases
- G46.0 — Middle cerebral artery syndrome
- G46.1 — Anterior cerebral artery syndrome
- G46.2 — Posterior cerebral artery syndrome
G47: Sleep disorders
- G47.10 — Hypersomnia, unspecified
- G47.11 — Idiopathic hypersomnia with long sleep time
- G47.12 — Idiopathic hypersomnia without long sleep time
- G47.13 — Recurrent hypersomnia
- G47.14 — Hypersomnia due to medical condition
- G47.19 — Other hypersomnia
- G47.30 — Sleep apnea, unspecified
- G47.31 — Primary central sleep apnea
- G47.32 — High altitude periodic breathing
- G47.33 — Obstructive sleep apnea (adult) (pediatric)
- G47.34 — Idiopathic sleep related nonobstructive alveolar hypoventilation
- G47.35 — Congenital central alveolar hypoventilation syndrome
- G47.36 — Sleep related hypoventilation in conditions classified elsewhere
- G47.37 — Central sleep apnea in conditions classified elsewhere
- G47.39 — Other sleep apnea
- G47.411 — Narcolepsy with cataplexy
- G47.419 — Narcolepsy without cataplexy
- G47.421 — Narcolepsy in conditions classified elsewhere with cataplexy
- G47.429 — Narcolepsy in conditions classified elsewhere without cataplexy
- G47.50 — Parasomnia, unspecified
- G47.51 — Confusional arousals
- G47.52 — REM sleep behavior disorder
- G47.53 — Recurrent isolated sleep paralysis
- G47.54 — Parasomnia in conditions classified elsewhere
- G47.59 — Other parasomnia
- G47.61 — Periodic limb movement disorder
- G47.8 — Other sleep disorders
- G47.9 — Sleep disorder, unspecified
G50: Disorders of trigeminal nerve
- G50.0 — Trigeminal neuralgia
- G50.1 — Atypical facial pain
- G50.8 — Other disorders of trigeminal nerve
- G50.9 — Disorder of trigeminal nerve, unspecified
G51: Facial nerve disorders
- G51.0 — Bell's palsy
- G51.1 — Geniculate ganglionitis
- G51.2 — Melkersson's syndrome
- G51.31 — Clonic hemifacial spasm, right
- G51.32 — Clonic hemifacial spasm, left
- G51.33 — Clonic hemifacial spasm, bilateral
- G51.4 — Facial myokymia
- G51.8 — Other disorders of facial nerve
- G51.9 — Disorder of facial nerve, unspecified
G52: Disorders of other cranial nerves
- G52.0 — Disorders of olfactory nerve
- G52.1 — Disorders of glossopharyngeal nerve
- G52.2 — Disorders of vagus nerve
- G52.3 — Disorders of hypoglossal nerve
- G52.7 — Disorders of multiple cranial nerves
- G52.8 — Disorders of other specified cranial nerves
- G52.9 — Cranial nerve disorder, unspecified
G53: Cranial nerve disorders in diseases classified elsewhere
- G53 — Cranial nerve disorders in diseases classified elsewhere
G54: Nerve root and plexus disorders
- G54.0 — Brachial plexus disorders
- G54.1 — Lumbosacral plexus disorders
- G54.2 — Cervical root disorders, not elsewhere classified
- G54.3 — Thoracic root disorders, not elsewhere classified
- G54.4 — Lumbosacral root disorders, not elsewhere classified
- G54.5 — Neuralgic amyotrophy
- G54.6 — Phantom limb syndrome with pain
- G54.7 — Phantom limb syndrome without pain
- G54.8 — Other nerve root and plexus disorders
- G54.9 — Nerve root and plexus disorder, unspecified
G55: Nerve root and plexus compressions in diseases classified elsewhere
- G55 — Nerve root and plexus compressions in diseases classified elsewhere
G56: Mononeuropathies of upper limb
- G56.01 — Carpal tunnel syndrome, right upper limb
- G56.02 — Carpal tunnel syndrome, left upper limb
- G56.03 — Carpal tunnel syndrome, bilateral upper limbs
- G56.11 — Other lesions of median nerve, right upper limb
- G56.12 — Other lesions of median nerve, left upper limb
- G56.13 — Other lesions of median nerve, bilateral upper limbs
- G56.21 — Lesion of ulnar nerve, right upper limb
- G56.22 — Lesion of ulnar nerve, left upper limb
- G56.23 — Lesion of ulnar nerve, bilateral upper limbs
- G56.31 — Lesion of radial nerve, right upper limb
- G56.32 — Lesion of radial nerve, left upper limb
- G56.33 — Lesion of radial nerve, bilateral upper limbs
- G56.41 — Causalgia of right upper limb
- G56.42 — Causalgia of left upper limb
- G56.43 — Causalgia of bilateral upper limbs
- G56.81 — Other specified mononeuropathies of right upper limb
- G56.82 — Other specified mononeuropathies of left upper limb
- G56.83 — Other specified mononeuropathies of bilateral upper limbs
- G56.91 — Unspecified mononeuropathy of right upper limb
- G56.92 — Unspecified mononeuropathy of left upper limb
- G56.93 — Unspecified mononeuropathy of bilateral upper limbs
G57: Mononeuropathies of lower limb
- G57.01 — Lesion of sciatic nerve, right lower limb
- G57.02 — Lesion of sciatic nerve, left lower limb
- G57.03 — Lesion of sciatic nerve, bilateral lower limbs
- G57.11 — Meralgia paresthetica, right lower limb
- G57.12 — Meralgia paresthetica, left lower limb
- G57.13 — Meralgia paresthetica, bilateral lower limbs
- G57.21 — Lesion of femoral nerve, right lower limb
- G57.22 — Lesion of femoral nerve, left lower limb
- G57.23 — Lesion of femoral nerve, bilateral lower limbs
- G57.31 — Lesion of lateral popliteal nerve, right lower limb
- G57.32 — Lesion of lateral popliteal nerve, left lower limb
- G57.33 — Lesion of lateral popliteal nerve, bilateral lower limbs
- G57.41 — Lesion of medial popliteal nerve, right lower limb
- G57.42 — Lesion of medial popliteal nerve, left lower limb
- G57.43 — Lesion of medial popliteal nerve, bilateral lower limbs
- G57.51 — Tarsal tunnel syndrome, right lower limb
- G57.52 — Tarsal tunnel syndrome, left lower limb
- G57.53 — Tarsal tunnel syndrome, bilateral lower limbs
- G57.61 — Lesion of plantar nerve, right lower limb
- G57.62 — Lesion of plantar nerve, left lower limb
- G57.63 — Lesion of plantar nerve, bilateral lower limbs
- G57.71 — Causalgia of right lower limb
- G57.72 — Causalgia of left lower limb
- G57.73 — Causalgia of bilateral lower limbs
- G57.81 — Other specified mononeuropathies of right lower limb
- G57.82 — Other specified mononeuropathies of left lower limb
- G57.83 — Other specified mononeuropathies of bilateral lower limbs
- G57.91 — Unspecified mononeuropathy of right lower limb
- G57.92 — Unspecified mononeuropathy of left lower limb
- G57.93 — Unspecified mononeuropathy of bilateral lower limbs
G58: Other mononeuropathies
- G58.0 — Intercostal neuropathy
- G58.7 — Mononeuritis multiplex
- G58.8 — Other specified mononeuropathies
- G58.9 — Mononeuropathy, unspecified
G59: Mononeuropathy in diseases classified elsewhere
- G59 — Mononeuropathy in diseases classified elsewhere
G60: Hereditary and idiopathic neuropathy
- G60.0 — Hereditary motor and sensory neuropathy
- G60.1 — Refsum's disease
- G60.2 — Neuropathy in association with hereditary ataxia
- G60.3 — Idiopathic progressive neuropathy
- G60.8 — Other hereditary and idiopathic neuropathies
- G60.9 — Hereditary and idiopathic neuropathy, unspecified
G61: Inflammatory polyneuropathy
- G61.0 — Guillain-Barre syndrome
- G61.1 — Serum neuropathy
- G61.81 — Chronic inflammatory demyelinating polyneuritis
- G61.82 — Multifocal motor neuropathy
- G61.89 — Other inflammatory polyneuropathies
G62: Other and unspecified polyneuropathies
- G62.0 — Drug-induced polyneuropathy
- G62.1 — Alcoholic polyneuropathy
- G62.2 — Polyneuropathy due to other toxic agents
- G62.81 — Critical illness polyneuropathy
- G62.82 — Radiation-induced polyneuropathy
- G62.89 — Other specified polyneuropathies
- G62.9 — Polyneuropathy, unspecified
G63: Polyneuropathy in diseases classified elsewhere
- G63 — Polyneuropathy in diseases classified elsewhere
G64: Other disorders of peripheral nervous system
- G64 — Other disorders of peripheral nervous system
G65: Sequelae of inflammatory and toxic polyneuropathies
- G65.0 — Sequelae of Guillain-Barre syndrome
- G65.1 — Sequelae of other inflammatory polyneuropathy
- G65.2 — Sequelae of toxic polyneuropathy
G70: Myasthenia gravis and other myoneural disorders
- G70.00 — Myasthenia gravis without (acute) exacerbation
- G70.01 — Myasthenia gravis with (acute) exacerbation
- G70.1 — Toxic myoneural disorders
- G70.80 — Lambert-Eaton syndrome, unspecified
- G70.81 — Lambert-Eaton syndrome in disease classified elsewhere
- G70.9 — Myoneural disorder, unspecified
G71: Primary disorders of muscles
- G71.00 — Muscular dystrophy, unspecified
- G71.01 — Duchenne or Becker muscular dystrophy
- G71.02 — Facioscapulohumeral muscular dystrophy
- G71.031 — Autosomal dominant limb girdle muscular dystrophy
- G71.032 — Autosomal recessive limb girdle muscular dystrophy due to calpain-3…
- G71.033 — Limb girdle muscular dystrophy due to dysferlin dysfunction
- G71.0340 — Limb girdle muscular dystrophy due to sarcoglycan dysfunction…
- G71.0341 — Limb girdle muscular dystrophy due to alpha sarcoglycan dysfunction
- G71.0342 — Limb girdle muscular dystrophy due to beta sarcoglycan dysfunction
- G71.0349 — Limb girdle muscular dystrophy due to other sarcoglycan dysfunction
- G71.035 — Limb girdle muscular dystrophy due to anoctamin-5 dysfunction
- G71.036 — Limb girdle muscular dystrophy due to fukutin related protein…
- G71.038 — Other limb girdle muscular dystrophy
- G71.039 — Limb girdle muscular dystrophy, unspecified
- G71.09 — Other specified muscular dystrophies
- G71.11 — Myotonic muscular dystrophy
- G71.12 — Myotonia congenita
- G71.13 — Myotonic chondrodystrophy
- G71.14 — Drug induced myotonia
- G71.19 — Other specified myotonic disorders
- G71.20 — Congenital myopathy, unspecified
- G71.21 — Nemaline myopathy
- G71.220 — X-linked myotubular myopathy
- G71.228 — Other centronuclear myopathy
- G71.29 — Other congenital myopathy
- G71.3 — Mitochondrial myopathy, not elsewhere classified
- G71.8 — Other primary disorders of muscles
G72: Other and unspecified myopathies
- G72.0 — Drug-induced myopathy
- G72.1 — Alcoholic myopathy
- G72.2 — Myopathy due to other toxic agents
- G72.3 — Periodic paralysis
- G72.41 — Inclusion body myositis [IBM]
- G72.49 — Other inflammatory and immune myopathies, not elsewhere classified
- G72.81 — Critical illness myopathy
- G72.89 — Other specified myopathies
- G72.9 — Myopathy, unspecified
G73: Disorders of myoneural junction and muscle in diseases classified elsewhere
- G73.1 — Lambert-Eaton syndrome in neoplastic disease
- G73.3 — Myasthenic syndromes in other diseases classified elsewhere
- G73.7 — Myopathy in diseases classified elsewhere
G80: Cerebral palsy
- G80.0 — Spastic quadriplegic cerebral palsy
- G80.1 — Spastic diplegic cerebral palsy
- G80.2 — Spastic hemiplegic cerebral palsy
- G80.3 — Athetoid cerebral palsy
- G80.4 — Ataxic cerebral palsy
- G80.8 — Other cerebral palsy
- G80.9 — Cerebral palsy, unspecified
G81: Hemiplegia and hemiparesis
- G81.01 — Flaccid hemiplegia affecting right dominant side
- G81.02 — Flaccid hemiplegia affecting left dominant side
- G81.03 — Flaccid hemiplegia affecting right nondominant side
- G81.04 — Flaccid hemiplegia affecting left nondominant side
- G81.11 — Spastic hemiplegia affecting right dominant side
- G81.12 — Spastic hemiplegia affecting left dominant side
- G81.13 — Spastic hemiplegia affecting right nondominant side
- G81.14 — Spastic hemiplegia affecting left nondominant side
- G81.91 — Hemiplegia, unspecified affecting right dominant side
- G81.92 — Hemiplegia, unspecified affecting left dominant side
- G81.93 — Hemiplegia, unspecified affecting right nondominant side
- G81.94 — Hemiplegia, unspecified affecting left nondominant side
G82: Paraplegia (paraparesis) and quadriplegia (quadriparesis)
- G82.20 — Paraplegia, unspecified
- G82.21 — Paraplegia, complete
- G82.22 — Paraplegia, incomplete
- G82.50 — Quadriplegia, unspecified
- G82.51 — Quadriplegia, C1-C4 complete
- G82.52 — Quadriplegia, C1-C4 incomplete
- G82.53 — Quadriplegia, C5-C7 complete
- G82.54 — Quadriplegia, C5-C7 incomplete
G83: Other paralytic syndromes
- G83.0 — Diplegia of upper limbs
- G83.11 — Monoplegia of lower limb affecting right dominant side
- G83.12 — Monoplegia of lower limb affecting left dominant side
- G83.13 — Monoplegia of lower limb affecting right nondominant side
- G83.14 — Monoplegia of lower limb affecting left nondominant side
- G83.21 — Monoplegia of upper limb affecting right dominant side
- G83.22 — Monoplegia of upper limb affecting left dominant side
- G83.23 — Monoplegia of upper limb affecting right nondominant side
- G83.24 — Monoplegia of upper limb affecting left nondominant side
- G83.31 — Monoplegia, unspecified affecting right dominant side
- G83.32 — Monoplegia, unspecified affecting left dominant side
- G83.33 — Monoplegia, unspecified affecting right nondominant side
- G83.34 — Monoplegia, unspecified affecting left nondominant side
- G83.4 — Cauda equina syndrome
- G83.5 — Locked-in state
- G83.81 — Brown-Sequard syndrome
- G83.82 — Anterior cord syndrome
- G83.83 — Posterior cord syndrome
- G83.84 — Todd's paralysis (postepileptic)
- G83.89 — Other specified paralytic syndromes
- G83.9 — Paralytic syndrome, unspecified
G89: Pain, not elsewhere classified
- G89.21 — Chronic pain due to trauma
- G89.22 — Chronic post-thoracotomy pain
- G89.28 — Other chronic postprocedural pain
- G89.29 — Other chronic pain
- G89.3 — Neoplasm related pain (acute) (chronic)
- G89.4 — Chronic pain syndrome
G90: Disorders of autonomic nervous system
- G90.01 — Carotid sinus syncope
- G90.09 — Other idiopathic peripheral autonomic neuropathy
- G90.2 — Horner's syndrome
- G90.4 — Autonomic dysreflexia
- G90.511 — Complex regional pain syndrome I of right upper limb
- G90.512 — Complex regional pain syndrome I of left upper limb
- G90.513 — Complex regional pain syndrome I of upper limb, bilateral
- G90.521 — Complex regional pain syndrome I of right lower limb
- G90.522 — Complex regional pain syndrome I of left lower limb
- G90.523 — Complex regional pain syndrome I of lower limb, bilateral
- G90.59 — Complex regional pain syndrome I of other specified site
- G90.89 — Other disorders of autonomic nervous system
- G90.9 — Disorder of the autonomic nervous system, unspecified
G91: Hydrocephalus
- G91.2 — (Idiopathic) normal pressure hydrocephalus
G93: Other disorders of brain
- G93.1 — Anoxic brain damage, not elsewhere classified
- G93.45 — Developmental and epileptic encephalopathy
- G93.49 — Other encephalopathy
- G93.5 — Compression of brain
G95: Other and unspecified diseases of spinal cord
- G95.0 — Syringomyelia and syringobulbia
- G95.11 — Acute infarction of spinal cord (embolic) (nonembolic)
- G95.19 — Other vascular myelopathies
- G95.20 — Unspecified cord compression
- G95.29 — Other cord compression
- G95.81 — Conus medullaris syndrome
- G95.89 — Other specified diseases of spinal cord
- G95.9 — Disease of spinal cord, unspecified
G98: Other disorders of nervous system not elsewhere classified
- G98.8 — Other disorders of nervous system
G99: Other disorders of nervous system in diseases classified elsewhere
- G99.0 — Autonomic neuropathy in diseases classified elsewhere
- G99.2 — Myelopathy in diseases classified elsewhere