G59
✓ Billable
Mononeuropathy in diseases classified elsewhere
ICD-10-CM · FY2026 · Diseases of the Nervous System
Code
G59
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
- diabetic mononeuropathy (E08-E13 with .41)
- syphilitic nerve paralysis (A52.19)
- syphilitic neuritis (A52.15)
- tuberculous mononeuropathy (A17.83)
Code first
- underlying disease
Frequently asked questions
What is ICD-10 code G59?
ICD-10-CM code G59 represents Mononeuropathy 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 G59 billable?
Yes. G59 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is G59 in?
G59 belongs to the Diseases of the Nervous System chapter (G00–G99) of ICD-10-CM.
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