U.S. ICD-10-CM · FY 2027

G57 ICD-10-CM Code: Mononeuropathies of lower limb

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

Code definition

Official description

G57

Mononeuropathies of lower limb

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

Classification

Where G57 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 G57

    Mononeuropathies of lower limb

  4. 4

    Code G57

    Mononeuropathies of lower limb

More specific choices

Codes under G57

G57 is a non-billable category. Choose the child code that best matches the documented diagnosis.

Documentation details

Notes for this code

Inclusion terms

No inclusion terms are listed for G57.

Code first

No “code first” instruction is listed for G57.

Use additional code

No “use additional code” instruction is listed for G57.

Excludes1

Conditions that should not be reported together with this code.

  • current traumatic nerve disorder - see nerve injury by body region

Excludes2

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

No Excludes2 note is listed for G57.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

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 G57 mean?

G57 is the FY 2027 U.S. ICD-10-CM code for “Mononeuropathies of lower limb.”

Is G57 a billable or specific ICD-10-CM code?

No. G57 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.

Where is G57 located in ICD-10-CM?

G57 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 G57, Mononeuropathies of lower limb.

What coding notes are listed for G57?

No inclusion terms are listed for G57 in this reference record. No code-first instruction is listed. Excludes1 notes: current traumatic nerve disorder - see nerve injury by body region. No Excludes2 note is listed.

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