G00-G99ICD-10-CM chapter
Diseases of the nervous system
G00-G99 covers the ICD-10-CM codes for diseases of the nervous system — 68 categories. Select one to see its codes, billable status, and coding notes.
Categories in G00-G99
G00Bacterial meningitis, not elsewhere classified›G01Meningitis in bacterial diseases classified elsewhereBillable›G02Meningitis in other infectious and parasitic diseases classified elsewhereBillable›G03Meningitis due to other and unspecified causes›G04Encephalitis, myelitis and encephalomyelitis›G05Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere›G06Intracranial and intraspinal abscess and granuloma›G07Intracranial and intraspinal abscess and granuloma in diseases classified elsewhereBillable›G08Intracranial and intraspinal phlebitis and thrombophlebitisBillable›G09Sequelae of inflammatory diseases of central nervous systemBillable›G10Huntington's diseaseBillable›G11Hereditary ataxia›G12Spinal muscular atrophy and related syndromes›G13Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere›G14Postpolio syndromeBillable›G20Parkinson's disease›G21Secondary parkinsonism›G23Other degenerative diseases of basal ganglia›G24Dystonia›G25Other extrapyramidal and movement disorders›G26Extrapyramidal and movement disorders in diseases classified elsewhereBillable›G30Alzheimer's disease›G31Other degenerative diseases of nervous system, not elsewhere classified›G32Other degenerative disorders of nervous system in diseases classified elsewhere›G35Multiple sclerosis›G36Other acute disseminated demyelination›G37Other demyelinating diseases of central nervous system›G40Epilepsy and recurrent seizures›G43Migraine›G44Other headache syndromes›G45Transient cerebral ischemic attacks and related syndromes›G46Vascular syndromes of brain in cerebrovascular diseases›G47Sleep disorders›G50Disorders of trigeminal nerve›G51Facial nerve disorders›G52Disorders of other cranial nerves›G53Cranial nerve disorders in diseases classified elsewhereBillable›G54Nerve root and plexus disorders›G55Nerve root and plexus compressions in diseases classified elsewhereBillable›G56Mononeuropathies of upper limb›G57Mononeuropathies of lower limb›G58Other mononeuropathies›G59Mononeuropathy in diseases classified elsewhereBillable›G60Hereditary and idiopathic neuropathy›G61Inflammatory polyneuropathy›G62Other and unspecified polyneuropathies›G63Polyneuropathy in diseases classified elsewhereBillable›G64Other disorders of peripheral nervous systemBillable›G65Sequelae of inflammatory and toxic polyneuropathies›G70Myasthenia gravis and other myoneural disorders›G71Primary disorders of muscles›G72Other and unspecified myopathies›G73Disorders of myoneural junction and muscle in diseases classified elsewhere›G80Cerebral palsy›G81Hemiplegia and hemiparesis›G82Paraplegia (paraparesis) and quadriplegia (quadriparesis)›G83Other paralytic syndromes›G89Pain, not elsewhere classified›G90Disorders of autonomic nervous system›G91Hydrocephalus›G92Toxic encephalopathy›G93Other disorders of brain›G94Other disorders of brain in diseases classified elsewhereBillable›G95Other and unspecified diseases of spinal cord›G96Other disorders of central nervous system›G97Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified›G98Other disorders of nervous system not elsewhere classified›G99Other disorders of nervous system in diseases classified elsewhere›
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