G63
✓ Billable
Polyneuropathy in diseases classified elsewhere
ICD-10-CM · FY2026 · Diseases of the Nervous System
Code
G63
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Nervous System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Excludes1 — never 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)
Frequently asked questions
What is ICD-10 code G63?
ICD-10-CM code G63 represents Polyneuropathy in diseases classified elsewhere. It is a billable diagnosis code in the Diseases of the Nervous System chapter, effective October 1, 2025 – September 30, 2026.
Is G63 billable?
Yes. G63 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is G63 in?
G63 belongs to the Diseases of the Nervous System chapter (G00–G99) of ICD-10-CM.
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