2025 ICD-10-CM Diagnosis Code G63

Polyneuropathy in diseases classified elsewhere

ICD-10-CM Code:
G63
ICD-10 Code for:
Polyneuropathy in diseases classified elsewhere
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Chronic
Code Navigator:

G63 is a billable diagnosis code used to specify a medical diagnosis of polyneuropathy in diseases classified elsewhere. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2024 through September 30, 2025.

Code Classification

  • Diseases of the nervous system
    (G00–G99)
    • Polyneuropathies and other disorders of the peripheral nervous system
      (G60-G65)
      • Polyneuropathy in diseases classified elsewhere
        (G63)

Approximate Synonyms

The following list of clinical terms are approximate synonyms, alternative descriptions, or common phrases that might be used by patients, healthcare providers, or medical coders to describe the same condition. These synonyms and related diagnosis terms are often used when searching for an ICD-10 code, especially when the exact medical terminology is unclear. Whether you're looking for lay terms, similar diagnosis names, or common language alternatives, this list can help guide you to the correct ICD-10 classification.

  • Bacterial infection of peripheral nerve
  • Cytomegaloviral polyneuropathy
  • Gouty neuritis
  • Hepatic neuropathy
  • Leprosy neuropathy
  • Leprosy polyneuropathy
  • Myxedema neuropathy
  • Neurological disorder due to obesity
  • Neurological disorder due to obesity
  • Neurolymphomatosis
  • Neuropathy associated with dysproteinemias
  • Neuropathy associated with dysproteinemias
  • Neuropathy associated with dysproteinemias
  • Neuropathy associated with dysproteinemias
  • Neuropathy associated with endocrine disorder
  • Neuropathy associated with hypoglycemia
  • Neuropathy caused by bacterial toxin
  • Neuropathy due to folic acid deficiency
  • Neuropathy due to nutritional deficiency
  • Neuropathy due to obesity
  • Neuropathy due to vitamin B deficiency
  • Neuropathy in acromegaly
  • Neuropathy in benign monoclonal gammopathy
  • Neuropathy in blood dyscrasias
  • Neuropathy in cryoglobulinemia
  • Neuropathy in macroglobulinemia
  • Neuropathy in renal failure
  • Neuropathy in renal failure
  • Niacin deficiency
  • Paraneoplastic neuropathy
  • Paraneoplastic neuropathy
  • Paraneoplastic peripheral neuropathy
  • Paraneoplastic peripheral neuropathy
  • Pellagra
  • Pellagra neuropathy
  • Peripheral neuropathy caused by toxin
  • Peripheral neuropathy due to multiple micronutrient deficiencies
  • Peripheral neuropathy due to obesity
  • Peripheral neuropathy due to overweight
  • POEMS syndrome
  • Polyneuropathy associated with another disorder
  • Polyneuropathy caused by drug
  • Polyneuropathy co-occurrent and due to systemic connective tissue disorder
  • Polyneuropathy due to classical cystic fibrosis
  • Polyneuropathy due to disorder of parathyroid gland
  • Polyneuropathy due to vitamin B deficiency
  • Polyneuropathy in collagen malignant disease
  • Polyneuropathy in collagen vascular disease
  • Polyneuropathy in collagen vascular disease
  • Polyneuropathy in collagen vascular disease
  • Polyneuropathy in collagen vascular disease
  • Polyneuropathy in disseminated lupus erythematosus
  • Polyneuropathy in pellagra
  • Polyneuropathy in polyarteritis nodosa
  • Polyneuropathy in rheumatoid arthritis
  • Porphyric polyneuropathy
  • Secondary peripheral neuropathy
  • Sensory polyneuropathy
  • Sensory polyneuropathy due to vitamin E deficiency
  • Toxic polyneuropathy
  • Toxic polyneuropathy
  • Uremic neuropathy
  • Uremic polyneuropathy

Clinical Classification

Clinical Classifications group individual ICD-10-CM diagnosis codes into broader, clinically meaningful categories. These categories help simplify complex data by organizing related conditions under common clinical themes.

They are especially useful for data analysis, reporting, and clinical decision-making. Even when diagnosis codes differ, similar conditions can be grouped together based on their clinical relevance. Each category is assigned a unique CCSR code that represents a specific clinical concept, often tied to a body system or medical specialty.

Polyneuropathies

CCSR Code: NVS015

Inpatient Default: X - Not applicable.

Outpatient Default: X - Not applicable.

Clinical Information

  • Herpesvirus 2, Gallid

    the type species of the genus mardivirus in the family herpesviridae. it is the etiologic agent of marek disease, infecting domestic fowl and wild birds.
  • Neurolymphomatosis

    infiltration of the nervous system by malignant lymphoma cells.
  • Pellagra

    a disease due to deficiency of niacin, a b-complex vitamin, or its precursor tryptophan. it is characterized by scaly dermatitis which is often associated with diarrhea and dementia (the three d's).
  • POEMS Syndrome

    a multisystemic disorder characterized by a sensorimotor polyneuropathy (polyneuropathies), organomegaly, endocrinopathy, monoclonal gammopathy, and pigmentary skin changes. other clinical features which may be present include edema; cachexia; microangiopathic glomerulopathy; pulmonary hypertension (hypertension, pulmonary); cutaneous necrosis; thrombocytosis; and polycythemia. this disorder is frequently associated with osteosclerotic myeloma. (from adams et al., principles of neurology, 6th ed, p1335; rev med interne 1997;18(7):553-62)
  • Uremic Neuropathy

    neuropathy resulting from uremia.
  • Toxic Polyneuropathy

    polyneuropathy that is caused by exposure to toxins.

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Code First

Code First
Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Code Edits

The Medicare Code Editor (MCE) detects errors and inconsistencies in ICD-10-CM diagnosis coding that can affect Medicare claim validity. These Medicare code edits help medical coders and billing professionals determine when a diagnosis code is not appropriate as a principal diagnosis, does not meet coverage criteria. Use this list to verify whether a code is valid for Medicare billing and to avoid claim rejections or denials due to diagnosis coding issues.

Manifestation diagnoses

Manifestation codes describe the manifestation of an underlying disease, not the disease itself, and therefore should not be used as a principal diagnosis.

Convert G63 to ICD-9-CM

Below are the ICD-9 codes that most closely match this ICD-10 code, based on the General Equivalence Mappings (GEMs). This ICD-10 to ICD-9 crosswalk tool is helpful for coders who need to reference legacy diagnosis codes for audits, historical claims, or approximate code comparisons.

Neuropathy in other dis

ICD-9-CM: 357.4

Approximate Flag - The approximate mapping means this ICD-10 code does not have an exact ICD-9 equivalent. The matched code is the closest available option, but it may not fully capture the original diagnosis or clinical intent.

Patient Education


Peripheral Nerve Disorders

What are peripheral nerves?

Nerves are like wires that carry messages back and forth between your brain and your body. Your peripheral nerves branch off from your brain and spinal cord and connect to all parts of your body, including your muscles and organs. Peripheral nerves carry messages from your brain that control your movement, breathing, heartbeat, digestion, and more. They also carry messages from your body to your brain, so you can feel things, such as pain, heat, and cold.

What are peripheral nerve disorders?

Peripheral nerve disorders happen when one or more peripheral nerves are damaged. Damaged nerves may not carry messages correctly, or they may not work at all. As a result, you may have pain, trouble walking, or a variety of other problems, depending on which nerves are involved.

Peripheral nerve disorders are very common. There are more than 100 different types.

What causes peripheral nerve disorders?

Many things can damage nerves and lead to peripheral nerve disorders:

  • Diabetes is the most common cause of peripheral nerve disorders. Most people with diabetes will develop diabetic nerve problems.
  • Physical injury (trauma) that stretches, crushes, squeezes, cuts, or puts pressure on one or more nerves. Some examples of peripheral nerve disorders from physical injury include complex regional pain syndrome and brachial plexus injuries.
  • Health conditions, including:
    • Certain cancers and their treatment (chemotherapy and radiation therapy).
    • Infections, such as HIV and Lyme disease.
    • Problems with blood or blood vessels.
    • Autoimmune diseases, such as rheumatoid arthritis and lupus.
    • Kidney or liver disease.
  • Certain medicines.
  • Contact with certain toxic substances, such as lead or mercury.
  • Alcohol use disorder (AUD) and smoking.
  • Vitamin imbalances, especially a lack of vitamin B12.
  • Your genes, including changes in your genes or conditions that you inherit from your parents, such as Charcot-Marie-Tooth disease.

In certain cases, the cause of peripheral nerve disorder is not known.

What are the symptoms of peripheral nerve disorders?

The symptoms of peripheral nerve disorders depend on which nerves are affected, what is causing the damage, and how serious it is:

Types of nerves Possible symptoms of nerve damage
Motor nerves control your muscles and all your movement, such as walking, talking, and using your hands.
  • Weak or aching muscles
  • Problems with balance, walking, or using your arms and hands
  • Cramps or twitching muscles
  • Muscle shrinking
Sensory nerves carry messages to your brain from your senses, including touch, hot and cold, and pain.
  • Tingling, numbness, or pain often in the hands and feet
  • Not being able to feel heat, cold, or pain, such as a cut on your foot
  • Pain from even light touch
Autonomic nerves send messages to your organs to control breathing, digestion, and other body functions that happen without thinking about them.
  • A heartbeat that's too fast or too slow
  • Trouble swallowing
  • Sweating too much or too little
  • Vomiting, diarrhea, or constipation
  • Problems with urination or sexual function


Symptoms may range from mild to very strong. They may develop quickly over days or slowly over months and years. But they are rarely life-threatening.

How are peripheral nerve disorders diagnosed?

To find out if you have a peripheral nerve disorder, your provider will:

  • Ask about your medical history
  • Ask about your family health history
  • Do a physical exam
  • Order tests, which may include:
    • Blood tests
    • Genetic tests
    • Nerve tests that measure:
      • Electrical activity in your nerves and muscles
      • How well your autonomic nerves are working
    • A biopsy of nerve or skin tissue
    • CT or MRI scan to see what may be pressing on your nerves

What are the treatments for peripheral nerve disorders?

It's important to treat any conditions that are causing nerve damage. In certain cases, that will allow your nerves to heal over time.

Treatment for symptoms depends on the type of peripheral nerve disorder you have, where it is, and how severe. Treatment options include:

  • Braces or splints
  • Over-the-counter patches and skin creams
  • Prescription medicines
  • Non-drug pain management, such as electrical stimulation or relaxation therapy
  • Surgery to relieve pressure on a nerve

Can peripheral nerve disorders be prevented?

You can help prevent peripheral nerve disorders by:

  • Managing health conditions that may cause nerve damage, especially diabetes
  • Preventing falls and accidents
  • Avoiding toxic substances
  • Being careful to avoid repeated motions and body positions that press on your nerves
  • Eating a balanced diet, exercising, limiting alcohol, and not smoking

NIH: National Institute of Neurological Disorders and Stroke


[Learn More in MedlinePlus]

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.