U.S. ICD-10-CM · FY 2027

G56 ICD-10-CM Code: Mononeuropathies of upper 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

G56

Mononeuropathies of upper limb

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

Classification

Where G56 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 G56

    Mononeuropathies of upper limb

  4. 4

    Code G56

    Mononeuropathies of upper limb

More specific choices

Codes under G56

G56 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 G56.

Code first

No “code first” instruction is listed for G56.

Use additional code

No “use additional code” instruction is listed for G56.

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 G56.

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 G56 mean?

G56 is the FY 2027 U.S. ICD-10-CM code for “Mononeuropathies of upper limb.”

Is G56 a billable or specific ICD-10-CM code?

No. G56 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 G56 located in ICD-10-CM?

G56 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 G56, Mononeuropathies of upper limb.

What coding notes are listed for G56?

No inclusion terms are listed for G56 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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