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 CodesExtrapyramidal and movement disordersICD-10-CM g26-extrapyramidal-and-movement-disorders
    Ask Trek AI about this page

    ICD-10-CM Code For Extrapyramidal And Movement Disorders In Diseases Classified Elsewhere: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group G26 includes extrapyramidal and movement disturbances that are secondary to diseases classified elsewhere, covering drug-induced parkinsonism, dyskinesias, and other movement abnormalities associated with systemic or neurologic conditions. These ICD-10-CM diagnosis codes are used to document secondary movement disorder diagnoses, capturing severity, causation (for example drug-induced versus disease-related), and anatomical or functional involvement relevant to this group. Accurate coding within the ICD-10-CM G26 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

    Customize your policy alerts

    Sign up for ICD-10-CM Code For Extrapyramidal And Movement Disorders In Diseases Classified Elsewhere: Group Overview policy alerts

    Get alerted when relevant policies change without checking for updates manually.

    Monitor payer policy activity

    Receive email alerts as soon as relevant payer policies are published or updated.

    ICD-10-CM G26: Extrapyramidal And Movement Disorders In Diseases Classified Elsewhere Overview

    This group captures movement and extrapyramidal manifestations that occur as features of other underlying diseases rather than as primary movement disorders. It addresses involuntary movements, dyskinesias, and parkinsonism related to systemic, neurologic, or drug-induced conditions affecting motor control pathways. Accurate coding matters for capturing clinical complexity and for correct reimbursement because these signs often influence care needs and resource utilization.

    Table of contents

    Progress1 / 6

    Explore openpayer tools

    • Billing CodesCPT, HCPCS, DRG & more
    • Reimbursement RatesCommercial vs. Medicare rate reports
    • ProvidersHospitals & facilities
    • PayersPlans & market footprint
    • Taxonomy CodesNUCC specialty codes
    • ModifiersCPT modifiers & usage
    • Prior AuthorizationPA policies by payer & drug
    • Timely FilingFiling deadlines by payer
    • Coverage CriteriaMedical necessity by payer
    • Payer ContactsClaims, PA & appeals contacts
    View all tools

    When to Use

    Use a code from this group when a clinician documents a movement disorder as secondary to another specified disease or as a result of medication exposure, and the movement disorder is not the primary disease entity. These codes are appropriate when clinical notes identify the causative condition or when the movement disorder is explicitly recorded as occurring in the course of another diagnosis.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    G26Extrapyramidal and movement disorders in diseases classified elsewhere

    DRG Codes

    2 rows

    DRG CodeDescription
    056Degenerative Nervous System Disorders with MCC
    057Degenerative Nervous System Disorders without MCC

    Typical Clinical Scenarios

    • An elderly patient with long-standing Parkinson disease presents with worsening involuntary jerky movements and muscle rigidity after years of dopaminergic therapy; the clinician documents extrapyramidal features attributable to the underlying neurodegenerative disorder and assigns a code from this group to indicate extrapyramidal manifestations due to another disease process. Typical codes: G26
    • A middle-aged patient with a history of progressive supranuclear palsy is evaluated in clinic for new-onset gait instability, slowed movements, and increased muscle tone related to the primary neurologic disorder; the visit documents extrapyramidal movement abnormalities as part of the systemic neurologic disease and a code from this group is used to capture those manifestations. Typical codes: G26
    • A hospitalized patient with long-term antipsychotic exposure develops acute dystonic reactions and sustained involuntary postures prompting neurology consultation; the medical record notes extrapyramidal signs occurring in the setting of another condition/medication and a code from this group is assigned to indicate the extrapyramidal disorder as part of the overall clinical picture. Typical codes: G26

    Related Codes

    G20-PARKINSONS-DISEASE

    ICD-10-CM Code For Parkinsons Disease: Group Overview

    G21-SECONDARY-PARKINSONISM

    ICD-10-CM Code For Secondary Parkinsonism: Group Overview

    G23-OTHER-DEGENERATIVE-DISEASES-BASAL-GANGLIA

    ICD-10-CM Code For Other Degenerative Diseases Of Basal Ganglia: Group Overview

    G24-DYSTONIA

    ICD-10-CM Code For Dystonia: Group Overview

    G25-OTHER-EXTRAPYRAMIDAL-MOVEMENT-DISORDERS

    ICD-10-CM Code For Other Extrapyramidal And Movement Disorders: Group Overview

    Frequently Asked Questions

    References

    1. 1.CPT® Codes and Descriptions. AAPC. Retrieved Aug 11, 2026.Maintains the CPT code set's official descriptions and guidelines, licensed from the American Medical Association, used as the definitional source for CPT codes on this page.
    2. 2.HCPCS Quarterly Update. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's quarterly release of HCPCS Level II codes and short/long descriptors, the source for HCPCS code definitions and update history.
    3. 3.ICD-10-CM Full Code List. Centers for Medicare & Medicaid Services (CMS). Retrieved Aug 11, 2026.CMS's complete ICD-10-CM diagnosis code list, used to cross-reference diagnosis codes associated with this procedure or service.
    Published by

    Trek Health powers OpenPayer with a leading commercial payer intelligence platform, seamlessly converting fragmented payer data into actionable insights for provider organizations.

    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.