2021 ICD-10-CM Code G51

Facial nerve disorders

Version 2021

Not Valid for Submission

G51 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of facial nerve disorders. The code is not specific and is NOT valid for the year 2021 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Short Description:Facial nerve disorders
Long Description:Facial nerve disorders

Code Classification

Specific Coding for Facial nerve disorders

Non-specific codes like G51 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for facial nerve disorders:

  • BILLABLE CODE - Use G51.0 for Bell's palsy
  • BILLABLE CODE - Use G51.1 for Geniculate ganglionitis
  • BILLABLE CODE - Use G51.2 for Melkersson's syndrome
  • NON-BILLABLE CODE - G51.3 for Clonic hemifacial spasm
  • BILLABLE CODE - Use G51.31 for Clonic hemifacial spasm, right
  • BILLABLE CODE - Use G51.32 for Clonic hemifacial spasm, left
  • BILLABLE CODE - Use G51.33 for Clonic hemifacial spasm, bilateral
  • BILLABLE CODE - Use G51.39 for Clonic hemifacial spasm, unspecified
  • BILLABLE CODE - Use G51.4 for Facial myokymia
  • BILLABLE CODE - Use G51.8 for Other disorders of facial nerve
  • BILLABLE CODE - Use G51.9 for Disorder of facial nerve, unspecified

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to the code G51:


This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

Clinical Information

Information for Patients

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. Broken bones, especially the bones of your nose, cheekbone and jaw, are common facial injuries.

Certain diseases also lead to facial disorders. For example, nerve diseases like trigeminal neuralgia or Bell's palsy sometimes cause facial pain, spasms and trouble with eye or facial movement. Birth defects can also affect the face. They can cause underdeveloped or unusually prominent facial features or a lack of facial expression. Cleft lip and palate are a common facial birth defect.

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Code History

  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016 (First year ICD-10-CM implemented into the HIPAA code set)