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    OpenPayerBilling CodesNerve, nerve root and plexus disordersICD-10-CM g50-disorders-of-trigeminal-nerve
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    ICD-10-CM Code For Disorders Of Trigeminal Nerve: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group G50 includes trigeminal neuralgia, other trigeminal nerve disorders, and related neuropathies of the fifth cranial nerve that cause facial pain, sensory disturbances, or motor involvement. These ICD-10-CM diagnosis codes are used to document clinical presentations such as acute or chronic neuralgia, secondary trigeminal neuropathy due to trauma or disease, and associated complications that affect treatment decisions. Accurate coding within the ICD-10-CM G50 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM G50: Disorders Of Trigeminal Nerve Overview

    The diagnoses in the ICD-10-CM G50 group represent disorders affecting the trigeminal nerve, including trigeminal neuralgia and other neuralgias or neuropathies of the fifth cranial nerve. These conditions target the cranial nerve responsible for facial sensation and some motor functions, and they often present with pain, sensory loss, or facial dysfunction. Accurate coding matters for reimbursement because it documents the specific nerve disorder, severity, and clinical complexity required for proper claim adjudication and medical necessity justification.

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    When to Use

    Use a code from this group when clinical documentation indicates trigeminal nerve involvement manifested by neuralgia, neuropathy, or other functional impairment of facial sensation or related motor function. Select the code that best reflects laterality, etiology (idiopathic versus secondary), and any documented complications or severity to support clinical and billing records.

    ICD-10-CM Codes

    4 rows

    ICD-10-CM CodeDescription
    G50.0Trigeminal neuralgia
    G50.1Atypical facial pain
    G50.8Other disorders of trigeminal nerve
    G50.9Disorder of trigeminal nerve, unspecified

    DRG Codes

    2 rows

    DRG CodeDescription
    073Cranial and Peripheral Nerve Disorders with MCC
    074Cranial and Peripheral Nerve Disorders without MCC

    Typical Clinical Scenarios

    • A middle-aged patient presents to the emergency department with sudden onset, severe, unilateral lancinating facial pain triggered by light touch and eating; examination shows no facial weakness or sensory loss. The acute, paroxysmal nature of the pain and trigger zones suggest classic trigeminal neuralgia requiring urgent evaluation and short-term pain control; a diagnosis from this group is assigned to capture the trigeminal nerve disorder. Typical codes: G50.0, G50.9
    • An older adult with a history of multiple sclerosis reports chronic, recurrent right-sided facial pain that has progressed over months despite medication adjustments; neurologic exam and imaging correlate the pain with demyelinating lesions affecting the trigeminal pathways. Because this is a chronic neuropathic facial pain related to an underlying neurologic condition, a specific trigeminal nerve disorder code from the group is used to document the ongoing nerve involvement. Typical codes: G50.1, G50.8
    • A patient recovering from herpes zoster of the face presents to clinic with persistent burning, dysesthetic pain in the distribution of the trigeminal nerve weeks after the rash resolved, interfering with sleep and oral intake. This postinfectious neuralgia represents a complication involving the trigeminal nerve and is coded to reflect the nerve-related pain as part of the patient’s comorbidity profile. Typical codes: G50.8, G50.9

    Related Codes

    G51-FACIAL-NERVE-DISORDERS

    ICD-10-CM Code For Facial Nerve Disorders: Group Overview

    G52-DISORDERS-OF-OTHER-CRANIAL-NERVES

    ICD-10-CM Code For Disorders Of Other Cranial Nerves: Group Overview

    G53-CRANIAL-NERVE-DISORDERS

    ICD-10-CM Code For Cranial Nerve Disorders In Diseases Classified Elsewhere: Group Overview

    G54-NERVE-ROOT-AND-PLEXUS-DISORDERS

    ICD-10-CM Code For Nerve Root And Plexus Disorders: Group Overview

    G55-NERVE-ROOT-AND-PLEXUS-COMPRESSIONS

    ICD-10-CM Code For Nerve Root And Plexus Compressions In Diseases Classified Elsewhere: Group Overview

    G56-MONONEUROPATHIES-OF-UPPER-LIMB

    ICD-10-CM Code For Mononeuropathies Of Upper Limb: Group Overview

    G57-MONONEUROPATHIES-OF-LOWER-LIMB

    ICD-10-CM Code For Mononeuropathies Of Lower Limb: Group Overview

    G58-OTHER-MONONEUROPATHIES

    ICD-10-CM Code For Other Mononeuropathies: Group Overview

    G59-MONONEUROPATHY-IN-DISEASES

    ICD-10-CM Code For Mononeuropathy In Diseases Classified Elsewhere: 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.
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