2026 ICD-10-CM Diagnosis Code G51Facial nerve disorders

ICD-10-CM Codes›G00–G99›G50-G59›G51

ICD-10-CM G51
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G51 is a non-billable ICD-10-CM category code for facial nerve disorders, so it cannot be submitted on claims. Use a more specific code from this category instead, such as G51.0, G51.1, G51.2, and G51.31.

Code Identity

ICD-10-CM Code
G51
Billable Status
No — Non-Billable Category
Code Describes
Facial nerve disorders
Chapter
G50-G59
Nerve, nerve root and plexus disorders

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG50-G59Nerve, nerve root and plexus disorders
CategoryG51Facial nerve disorders
This CodeG51Facial nerve disorders

Specific Coding for Facial nerve disordersOverview

Non-specific codes like G51 require more characters. Use one of these billable codes instead:

  • Use G51.0 for Bell's palsy

  • Use G51.1 for Geniculate ganglionitis

  • Use G51.2 for Melkersson's syndrome

  • G51.3 for Clonic hemifacial spasm

  • Use G51.31 for Clonic hemifacial spasm, right

  • Use G51.32 for Clonic hemifacial spasm, left

  • Use G51.33 for Clonic hemifacial spasm, bilateral

  • Use G51.39 for Clonic hemifacial spasm, unspecified

  • Use G51.4 for Facial myokymia

  • Use G51.8 for Other disorders of facial nerve

  • Use G51.9 for Disorder of facial nerve, unspecified

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • disorders of 7th cranial nerve

Patient EducationClinical

Facial Injuries and Disorders

Face injuries and disorders can cause pain and affect how you look. In severe cases, they can affect sight, speech, breathing and your ability to swallow. Fractures (broken bones), especially in the bones of your nose, cheekbone and jaw, are common facial injuries.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G51Overview

Is G51 (Facial nerve disorders) a billable code?

No. This is a category header that groups the codes for facial nerve disorders, and headers cannot be submitted on claims. Claims for facial nerve disorders need a more specific code from this category, such as G51.0, G51.1, and G51.2.