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    OpenPayerBilling CodesPolyneuropathies and other disorders of the peripheral nervous systemICD-10-CM g63-polyneuropathy-in-diseases-classified-elsewhere
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    ICD-10-CM Code For Polyneuropathy In Diseases Classified Elsewhere: Group Overview

    The International Classification of Diseases, Tenth Revision, Clinical Modification (ICD-10-CM) code group G63 includes polyneuropathies that are specified as resulting from other diseases, such as diabetic polyneuropathy, toxic neuropathies, or inflammatory disorders affecting peripheral nerves. These ICD-10-CM diagnosis codes are used to document the clinical relationship between peripheral nerve dysfunction and an underlying systemic or specific disease, capturing disease severity, organ involvement, or clinical complexity relevant to this group. Accurate coding within the ICD-10-CM G63 group supports proper claim adjudication, complete clinical documentation, and appropriate reimbursement.

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    ICD-10-CM G63: Polyneuropathy In Diseases Classified Elsewhere Overview

    This group encompasses polyneuropathies that occur as manifestations of other systemic or specific diseases and affect the peripheral nervous system. These diagnoses describe diffuse, typically symmetric peripheral nerve dysfunction associated with an underlying condition. Accurate coding ensures clinical records reflect the underlying etiology and supports correct billing and reimbursement.

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    When to Use

    Use a code from this group when a documented peripheral neuropathy is explicitly attributed to another diagnosed disease or condition and the link is supported in the medical record. Select codes that reflect both the neuropathic presentation and the underlying cause to capture the full clinical picture for documentation and billing.

    ICD-10-CM Codes

    1 rows

    ICD-10-CM CodeDescription
    G63Polyneuropathy in diseases classified elsewhere

    DRG Codes

    2 rows

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

    Typical Clinical Scenarios

    • A 62-year-old patient with long-standing type 2 diabetes presents to the outpatient neurology clinic with progressive numbness, burning pain, and loss of vibration sense in a stocking distribution over the past year, causing frequent falls and difficulty with footwear. Examination shows decreased ankle reflexes and distal sensory loss; nerve conduction studies demonstrate a length-dependent sensorimotor polyneuropathy thought to be due to the underlying systemic disease, so a code from this group is assigned to capture the polyneuropathy in a disease classified elsewhere. Typical codes: G63
    • A 45-year-old patient undergoing chemotherapy for lymphoma develops subacute symmetric distal weakness, paresthesias, and reduced reflexes over several weeks, prompting urgent neurology referral and electrophysiologic testing. The temporal relationship to neurotoxic chemotherapy and objective electrophysiologic evidence of a generalized peripheral nerve disorder lead to assignment of a diagnosis from this group to record polyneuropathy attributable to the cancer treatment. Typical codes: G63
    • An older adult with chronic kidney disease on long-term dialysis reports gradual onset of distal sensory loss and intermittent burning pain that has worsened despite dialysis adequacy; the primary care team documents impaired gait and increased risk of falls. Because the peripheral neuropathy is associated with the systemic renal disease and affects management and prognosis, a code from this group is used to indicate polyneuropathy in disease classified elsewhere. Typical codes: G63

    Related Codes

    G60-HEREDITARY-AND-IDIOPATHIC-NEUROPATHY

    ICD-10-CM Code For Hereditary And Idiopathic Neuropathy: Group Overview

    G61-INFLAMMATORY-POLYNEUROPATHY

    ICD-10-CM Code For Inflammatory Polyneuropathy: Group Overview

    G62-OTHER-AND-UNSPECIFIED-POLYNEUROPATHIES

    ICD-10-CM Code For Other And Unspecified Polyneuropathies: Group Overview

    G64-OTHER-PERIPHERAL-NERVE-DISORDERS

    ICD-10-CM Code For Other Disorders Of Peripheral Nervous System: Group Overview

    G65-SEQUELAE-OF-POLYNEUROPATHIES

    ICD-10-CM Code For Sequelae Of Inflammatory And Toxic Polyneuropathies: 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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