Loading...

    Explore
    • Policy Monitoring
    • Live Policy Feed
    • Billing Codes
    • NPI Medicare & Medicaid
    • Healthcare Providers
    • Health Insurance Payers
    • States
    • Service Lines
    • Taxonomy Codes
    Lookup tools
    • Billing Code Lookup
    • CPT Modifier Lookup
    • Provider Taxonomy Code Lookup
    • Healthcare Provider & Facility Lookup
    • Health Insurance Payer Lookup
    • Payer Contact Directory

    Policy & Benchmark Tools

    • Prior Authorization Lookup
    • Coverage Criteria Lookup
    • Timely Filing Lookup
    • Billing Code Reimbursement Rates
    • Payer Comparison Dashboard
    • Facility Comparison Dashboard
    • All tools

    Company

    • About OpenPayer
    • Data Sources
    • Trek Health
    OpenPayerby Trek Health
    LinkedInYouTube

    © 2026 Trek Health. All rights reserved.

    OpenPayer is built and maintained by Trek Health.

    v1.0.28
    OpenPayerBilling CodesICD-10-CM CodesDiseases of the nervous system

    Find policies, billing codes, payers, states, and providers

    11 categories

    Inflammatory diseases of the central nervous system

    The ICD-10 code range for Inflammatory diseases of the central nervous system G00-G09 is medical classification list by the World Health Organization (WHO). ICD-10 Code range (G00-G09), Inflammatory diseases of the central nervous system contains ICD-10 codes for Bacterial meningitis, not elsewhere classified, Meningitis in bacterial diseases classified elsewhere, Meningitis in other infectious and parasitic diseases classified elsewhere, Meningitis due to other and unspecified causes, Encephalitis, myelitis and encephalomyelitis, Encephalitis, myelitis and encephalomyelitis in diseases classified elsewhere, Intracranial and intraspinal abscess and granuloma, Intracranial and intraspinal abscess and granuloma in diseases classified elsewhere, Intracranial and intraspinal phlebitis and thrombophlebitis, Sequelae of inflammatory diseases of central nervous system

    Codes G00–G09Total Codes: 35
    Updated 9/1/2026Standalone

    Systemic atrophies primarily affecting the central nervous system

    The ICD-10 code range for Systemic atrophies primarily affecting the central nervous system G10-G14 is medical classification list by the World Health Organization (WHO). ICD-10 Code range (G10-G14), Systemic atrophies primarily affecting the central nervous system contains ICD-10 codes for Huntington's disease, Hereditary ataxia, Spinal muscular atrophy and related syndromes, Systemic atrophies primarily affecting central nervous system in diseases classified elsewhere, Postpolio syndrome

    Codes G10–G14Total Codes: 28
    Updated 9/1/2026Standalone

    Extrapyramidal and movement disorders

    The ICD-10 code range for Extrapyramidal and movement disorders G20-G26 is medical classification list by the World Health Organization (WHO). ICD-10 Code range (G20-G26), Extrapyramidal and movement disorders contains ICD-10 codes for Parkinson's disease, Secondary parkinsonism, Other degenerative diseases of basal ganglia, Dystonia, Other extrapyramidal and movement disorders, Extrapyramidal and movement disorders in diseases classified elsewhere

    Codes G20–G26Total Codes: 46
    Updated 9/1/2026Standalone

    Other degenerative diseases of the nervous system

    The ICD-10 code range for Other degenerative diseases of the nervous system G30-G32 is medical classification list by the World Health Organization (WHO). ICD-10 Code range (G30-G32), Other degenerative diseases of the nervous system contains ICD-10 codes for Alzheimer's disease, Other degenerative diseases of nervous system, not elsewhere classified, Other degenerative disorders of nervous system in diseases classified elsewhere

    Codes G30–G32Total Codes: 21
    Updated 9/1/2026Standalone

    Demyelinating diseases of the central nervous system

    The ICD-10 code range for Demyelinating diseases of the central nervous system G35-G37 is medical classification list by the World Health Organization (WHO). ICD-10 Code range (G35-G37), Demyelinating diseases of the central nervous system contains ICD-10 codes for Multiple sclerosis, Other acute disseminated demyelination, Other demyelinating diseases of central nervous system

    Codes G35–G37Total Codes: 21
    Updated 9/1/2026Standalone

    Episodic and paroxysmal disorders

    The ICD-10 code range for Episodic and paroxysmal disorders G40-G47 is medical classification list by the World Health Organization (WHO). ICD-10 Code range (G40-G47), Episodic and paroxysmal disorders contains ICD-10 codes for Epilepsy and recurrent seizures, Migraine, Other headache syndromes, Transient cerebral ischemic attacks and related syndromes, Vascular syndromes of brain in cerebrovascular diseases, Sleep disorders

    Codes G40–G47Total Codes: 205
    Updated 9/1/2026Standalone

    Nerve, nerve root and plexus disorders

    The ICD-10 code range for Nerve, nerve root and plexus disorders G50-G59 is medical classification list by the World Health Organization (WHO). ICD-10 Code range (G50-G59), Nerve, nerve root and plexus disorders contains ICD-10 codes for Disorders of trigeminal nerve, Facial nerve disorders, Disorders of other cranial nerves, Cranial nerve disorders in diseases classified elsewhere, Nerve root and plexus disorders, Nerve root and plexus compressions in diseases classified elsewhere, Mononeuropathies of upper limb, Mononeuropathies of lower limb, Other mononeuropathies, Mononeuropathy in diseases classified elsewhere

    Codes G50–G59Total Codes: 106
    Updated 9/1/2026Standalone

    Polyneuropathies and other disorders of the peripheral nervous system

    The ICD-10 code range for Polyneuropathies and other disorders of the peripheral nervous system G60-G65 is medical classification list by the World Health Organization (WHO). ICD-10 Code range (G60-G65), Polyneuropathies and other disorders of the peripheral nervous system contains ICD-10 codes for Hereditary and idiopathic neuropathy, Inflammatory polyneuropathy, Other and unspecified polyneuropathies, Polyneuropathy in diseases classified elsewhere, Other disorders of peripheral nervous system, Sequelae of inflammatory and toxic polyneuropathies

    Codes G60–G65Total Codes: 24
    Updated 9/1/2026Standalone

    Diseases of myoneural junction and muscle

    The ICD-10 code range for Diseases of myoneural junction and muscle G70-G73 is medical classification list by the World Health Organization (WHO). ICD-10 Code range (G70-G73), Diseases of myoneural junction and muscle contains ICD-10 codes for Myasthenia gravis and other myoneural disorders, Primary disorders of muscles, Other and unspecified myopathies, Disorders of myoneural junction and muscle in diseases classified elsewhere

    Codes G70–G73Total Codes: 48
    Updated 9/1/2026Standalone

    Cerebral palsy and other paralytic syndromes

    The ICD-10 code range for Cerebral palsy and other paralytic syndromes G80-G83 is medical classification list by the World Health Organization (WHO). ICD-10 Code range (G80-G83), Cerebral palsy and other paralytic syndromes contains ICD-10 codes for Cerebral palsy, Hemiplegia and hemiparesis, Paraplegia (paraparesis) and quadriplegia (quadriparesis), Other paralytic syndromes

    Codes G80–G83Total Codes: 54
    Updated 9/1/2026Standalone

    Other disorders of the nervous system

    The ICD-10 code range for Other disorders of the nervous system G89-G99 is medical classification list by the World Health Organization (WHO). ICD-10 Code range (G89-G99), Other disorders of the nervous system contains ICD-10 codes for Pain, not elsewhere classified, Disorders of autonomic nervous system, Hydrocephalus, Toxic encephalopathy, Other disorders of brain, Other disorders of brain in diseases classified elsewhere, Other and unspecified diseases of spinal cord, Other disorders of central nervous system, Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified, Other disorders of nervous system not elsewhere classified, Other disorders of nervous system in diseases classified elsewhere

    Codes G89–G99Total Codes: 112
    Updated 9/1/2026Standalone

    Explore Other

    • NPI Medicare & Medicaid
    • Payers
    • States
    • Service Lines
    • Policy Updates
    • Providers
    • Taxonomy Codes

    Toolbox

    Explore OpenPayer Tools

    • Billing Code LookupSearch CPT, HCPCS, J-codes, DRG, and dental codes by number or procedure name.
    • Billing Code Reimbursement RatesBuild a reimbursement rate report across any mix of billing codes and states, comparing commercial payers against Medicare.
    • Payer Comparison DashboardPick 2-5 payers to compare market share, premium, and membership by region, all at once.
    • Facility Comparison DashboardPick 2-6 hospital facility types (or add a specific hospital) to compare facility count, revenue, net income, and Medicare/Medicaid payer mix by region, all at once.
    • Healthcare Provider & Facility LookupFind hospitals and healthcare facilities by name, taxonomy, facility type, ownership, or state.
    • Health Insurance Payer LookupSearch national health insurance payers and health plans by name and state presence.
    • Provider Taxonomy Code LookupSearch NUCC taxonomy codes by code, specialty, grouping, or classification.
    • CPT Modifier LookupSearch CPT modifiers by code or name — descriptions, when to use them, and payer policy context.
    • Prior Authorization LookupSearch payer prior authorization policies by drug, procedure, or policy name.
    • Timely Filing LookupFind payer timely filing policies: claim deadlines, corrected claim windows, and appeal timeframes.
    • Coverage Criteria LookupSearch payer coverage criteria and medical necessity requirements by drug, procedure, or payer.
    • Payer Contact DirectoryClaims, prior authorization, provider services, and appeals contacts for health insurance payers.

    Trek Health ingests and normalizes Transparency in Coverage data and payer policy updates to give provider organizations a clear view of how commercial reimbursement behaves across markets, payers, and services. Our platform transforms raw payer disclosures into structured intelligence that supports contract evaluation, payer negotiations, and service line strategy. By combining market benchmarks with ongoing policy visibility, Trek helps teams identify variability, risk, and opportunity in commercial reimbursement. The result is faster insight, stronger negotiating positions, and more informed financial decisions.