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ICD10BillableValid for clinical use

ICD-10 Code G63: Polyneuropathy in diseases classified elsewhere

G63 is a billable ICD-10 diagnosis code used to classify Polyneuropathy in diseases classified elsewhere in medical records and claims. You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records. ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

What is this code?

ICD-10 codes are diagnosis classification codes used in healthcare records, reporting, coding workflows, and billing support. This code sits within the broader ICD-10 area for Diseases of the nervous system (G00-G99).

When is it used?

  • May be used when a clinician documents polyneuropathy in diseases classified elsewhere in a patient's medical record.
  • May appear in hospital records, claims, referrals, and clinical documentation.
  • This code can be used as a clinically usable diagnosis entry in standardized coding workflows.

What it does not mean

  • A code alone does not explain severity, treatment plan, or outcome.
  • A medical code should not be treated as a substitute for a doctor's diagnosis or advice.

Code hierarchy

chapter
6Diseases of the nervous system (G00-G99)
block
G60-G65Polyneuropathies and other disorders of the peripheral nervous system
currentG60-G65

Official coding notes

Applicable to
  • underlying disease, such as:
  • amyloidosis (E85.-)
  • endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34)
  • metabolic diseases (E70-E88)
  • neoplasm (C00-D49)
  • nutritional deficiency (E40-E64)
Excludes1 (do not code together)
  • polyneuropathy (in):
  • diabetes mellitus (E08-E13 with .42)
  • diphtheria (A36.83)
  • infectious mononucleosis complicated by polyneuropathy (B27.0-B27.9 with fifth character 1)
  • Lyme disease (A69.22)
  • mumps (B26.84)
  • postherpetic (B02.23)
  • rheumatoid arthritis (M05.5-)
  • scleroderma (M34.83)
  • systemic lupus erythematosus (M32.19)
Code first
  • underlying disease, such as:
  • amyloidosis (E85.-)
  • endocrine disease, except diabetes (E00-E07, E15-E16, E20-E34)
  • metabolic diseases (E70-E88)
  • neoplasm (C00-D49)
  • nutritional deficiency (E40-E64)

Where you may see this code

You may see this code in hospital records, discharge summaries, insurance claims, encounter documentation, referrals, or other healthcare billing and coding records.

Related specialists

NeurologistGeneral Physician

Coding guidelines

Compatibility

Legacy and official ICD code match exactly.
Legacy codes
G63

Common synonyms

Polyneuropathy in diseases classified elsewhere

Frequently asked questions

Code details

CodeG63
SystemICD10
Display namePolyneuropathy in diseases classified elsewhere
ChapterDiseases of the nervous system (G00-G99)
BlockPolyneuropathies and other disorders of the peripheral nervous system

Flags

BillableYes
Valid clinical useYes

Source

SourceICD-10
Version2026-annual
Releaseannual
Year2026

Index terms

Matched terms
Neuritis(rheumatoid)Neuritis(rheumatoid)Neuropathy, neuropathicNeuropathy, neuropathicNeuropathy, neuropathicNeuropathy, neuropathicPellagra(alcoholic)Polyneuritis, polyneuriticPolyneuritis, polyneuriticPolyneuropathy(peripheral)Polyneuropathy(peripheral)Polyneuropathy(peripheral)
See also
Gout, by type

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.