U.S. ICD-10-CM · FY 2027

G59 ICD-10-CM Code: Mononeuropathy in diseases classified elsewhere

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

G59

Mononeuropathy in diseases classified elsewhere

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where G59 sits

  1. 1

    Chapter 6

    Diseases of the nervous system (G00-G99)

  2. 2

    Section

    Nerve, nerve root and plexus disorders (G50-G59)

  3. 3

    Category G59

    Mononeuropathy in diseases classified elsewhere

  4. 4

    Code G59

    Mononeuropathy in diseases classified elsewhere

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for G59.

Code first

  • underlying disease

Use additional code

No “use additional code” instruction is listed for G59.

Excludes1

Conditions that should not be reported together with this code.

  • diabetic mononeuropathy (E08-E13 with .41)
  • syphilitic nerve paralysis (A52.19)
  • syphilitic neuritis (A52.15)
  • tuberculous mononeuropathy (A17.83)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for G59.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code G59 mean?

G59 is the FY 2027 U.S. ICD-10-CM code for “Mononeuropathy in diseases classified elsewhere.”

Is G59 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, G59 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is G59 located in ICD-10-CM?

G59 is listed in Chapter 6, Diseases of the nervous system (G00-G99), within Nerve, nerve root and plexus disorders (G50-G59) (G50–G59), under category G59, Mononeuropathy in diseases classified elsewhere.

What coding notes are listed for G59?

No inclusion terms are listed for G59 in this reference record. Code-first instructions: underlying disease. Excludes1 notes: diabetic mononeuropathy (E08-E13 with .41); syphilitic nerve paralysis (A52.19); syphilitic neuritis (A52.15); tuberculous mononeuropathy (A17.83). No Excludes2 note is listed.

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