Chapter 6: Diseases of the nervous system
224 billable codes (3-4 characters)
G00.0 Hemophilus meningitis G00.1 Pneumococcal meningitis G00.2 Streptococcal meningitis G00.3 Staphylococcal meningitis G00.8 Other bacterial meningitis G00.9 Bacterial meningitis, unspecified G01 Meningitis in bacterial diseases classified elsewhere G02 Meningitis in oth infec/parastc diseases classd elswhr G03.0 Nonpyogenic meningitis G03.1 Chronic meningitis G03.2 Benign recurrent meningitis [Mollaret] G03.8 Meningitis due to other specified causes G03.9 Meningitis, unspecified G04.1 Tropical spastic paraplegia G04.2 Bacterial meningoencephalitis and meningomyelitis, NEC G05.3 Encephalitis and encephalomyelitis in diseases classd elswhr G05.4 Myelitis in diseases classified elsewhere G06.0 Intracranial abscess and granuloma G06.1 Intraspinal abscess and granuloma G06.2 Extradural and subdural abscess, unspecified G07 Intcrn & intraspinal abscs & granuloma in dis classd elswhr G08 Intracranial and intraspinal phlebitis and thrombophlebitis G09 Sequelae of inflammatory diseases of central nervous system G10 Huntington's disease G11.0 Congenital nonprogressive ataxia G11.2 Late-onset cerebellar ataxia G11.3 Cerebellar ataxia with defective DNA repair G11.4 Hereditary spastic paraplegia G11.5 Hypomyelination - hypogonadotropic hypogonadism - hypodontia G11.6 Leukodystrophy with vanishing white matter disease G11.8 Other hereditary ataxias G11.9 Hereditary ataxia, unspecified G12.0 Infantile spinal muscular atrophy, type I [Werdnig-Hoffman] G12.1 Other inherited spinal muscular atrophy G12.8 Other spinal muscular atrophies and related syndromes G12.9 Spinal muscular atrophy, unspecified G13.0 Paraneoplastic neuromyopathy and neuropathy G13.1 Oth systemic atrophy aff cnsl in neoplastic disease G13.2 Systemic atrophy primarily affecting the cnsl in myxedema G13.8 Systemic atrophy aff cnsl in oth diseases classd elswhr G14 Postpolio syndrome G20.C Parkinsonism, unspecified G21.0 Malignant neuroleptic syndrome 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 G23.0 Hallervorden-Spatz disease G23.1 Progressive supranuclear ophthalmoplegia G23.2 Striatonigral degeneration G23.3 Hypomyelination with atrophy of basal ganglia and cerebellum G23.8 Other specified degenerative diseases of basal ganglia G23.9 Degenerative disease of basal ganglia, unspecified 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 G25.0 Essential tremor G25.1 Drug-induced tremor G25.2 Other specified forms of tremor G25.3 Myoclonus G25.4 Drug-induced chorea G25.5 Other chorea G25.9 Extrapyramidal and movement disorder, unspecified G26 Extrapyramidal and movement disord in diseases classd elswhr 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 G31.1 Senile degeneration of brain, not elsewhere classified G31.2 Degeneration of nervous system due to alcohol G31.9 Degenerative disease of nervous system, unspecified G32.0 Subac comb degeneration of spinal cord in dis classd elswhr G35.A Relapsing-remitting multiple sclerosis G35.D Multiple sclerosis, unspecified 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 G37.0 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 cnsl G37.4 Subacute necrotizing myelitis of central nervous system G37.5 Concentric sclerosis [Balo] of central nervous system G37.9 Demyelinating disease of central nervous system, unspecified G44.1 Vascular headache, not elsewhere classified G45.0 Vertebro-basilar artery syndrome G45.1 Carotid artery syndrome (hemispheric) G45.2 Multiple and bilateral precerebral artery syndromes G45.3 Amaurosis fugax G45.4 Transient global amnesia G45.8 Oth transient cerebral ischemic attacks and related synd G45.9 Transient cerebral ischemic attack, unspecified G46.0 Middle cerebral artery syndrome G46.1 Anterior cerebral artery syndrome G46.2 Posterior cerebral artery syndrome G46.3 Brain stem stroke syndrome G46.4 Cerebellar stroke syndrome G46.5 Pure motor lacunar syndrome G46.6 Pure sensory lacunar syndrome G46.7 Other lacunar syndromes G46.8 Oth vascular syndromes of brain in cerebrovascular diseases G47.8 Other sleep disorders G47.9 Sleep disorder, unspecified G50.0 Trigeminal neuralgia G50.1 Atypical facial pain G50.8 Other disorders of trigeminal nerve G50.9 Disorder of trigeminal nerve, unspecified G51.0 Bell's palsy G51.1 Geniculate ganglionitis G51.2 Melkersson's syndrome G51.4 Facial myokymia G51.8 Other disorders of facial nerve G51.9 Disorder of facial nerve, unspecified 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 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 classd elswhr G58.0 Intercostal neuropathy G58.7 Mononeuritis multiplex G58.8 Other specified mononeuropathies G58.9 Mononeuropathy, unspecified G59 Mononeuropathy in diseases classified elsewhere 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 G61.0 Guillain-Barre syndrome G61.1 Serum neuropathy G61.9 Inflammatory polyneuropathy, unspecified G62.0 Drug-induced polyneuropathy G62.1 Alcoholic polyneuropathy G62.2 Polyneuropathy due to other toxic agents G62.9 Polyneuropathy, unspecified G63 Polyneuropathy in diseases classified elsewhere G64 Other disorders of peripheral nervous system G65.0 Sequelae of Guillain-Barre syndrome G65.1 Sequelae of other inflammatory polyneuropathy G65.2 Sequelae of toxic polyneuropathy G70.1 Toxic myoneural disorders G70.2 Congenital and developmental myasthenia G70.9 Myoneural disorder, unspecified G71.3 Mitochondrial myopathy, not elsewhere classified G71.8 Other primary disorders of muscles G71.9 Primary disorder of muscle, unspecified G72.0 Drug-induced myopathy G72.1 Alcoholic myopathy G72.2 Myopathy due to other toxic agents G72.3 Periodic paralysis G72.9 Myopathy, unspecified G73.1 Lambert-Eaton syndrome in neoplastic disease G73.3 Myasthenic syndromes in other diseases classified elsewhere G73.7 Myopathy in diseases classified elsewhere G80.0 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 G83.0 Diplegia of upper limbs G83.4 Cauda equina syndrome G83.5 Locked-in state G83.9 Paralytic syndrome, unspecified G89.0 Central pain syndrome G89.3 Neoplasm related pain (acute) (chronic) G89.4 Chronic pain syndrome G90.1 Familial dysautonomia [Riley-Day] G90.2 Horner's syndrome G90.3 Multi-system degeneration of the autonomic nervous system G90.4 Autonomic dysreflexia G90.9 Disorder of the autonomic nervous system, unspecified G90.A Postural orthostatic tachycardia syndrome [POTS] G90.B LMNB1-related autosomal dominant leukodystrophy G91.0 Communicating hydrocephalus G91.1 Obstructive hydrocephalus G91.2 (Idiopathic) normal pressure hydrocephalus G91.3 Post-traumatic hydrocephalus, unspecified G91.4 Hydrocephalus in diseases classified elsewhere G91.8 Other hydrocephalus G91.9 Hydrocephalus, unspecified G92.8 Other toxic encephalopathy G92.9 Unspecified toxic encephalopathy G93.0 Cerebral cysts G93.1 Anoxic brain damage, not elsewhere classified G93.2 Benign intracranial hypertension G93.5 Compression of brain G93.6 Cerebral edema G93.7 Reye's syndrome G93.9 Disorder of brain, unspecified G94 Other disorders of brain in diseases classified elsewhere G95.0 Syringomyelia and syringobulbia G95.9 Disease of spinal cord, unspecified G96.9 Disorder of central nervous system, unspecified G97.0 Cerebrospinal fluid leak from spinal puncture G97.1 Other reaction to spinal and lumbar puncture G97.2 Intracranial hypotension following ventricular shunting G98.0 Neurogenic arthritis, not elsewhere classified G98.8 Other disorders of nervous system G99.0 Autonomic neuropathy in diseases classified elsewhere G99.2 Myelopathy in diseases classified elsewhere G99.8 Oth disrd of nervous system in diseases classified elsewhere