ICD-10-CM Code G51.39

Clonic hemifacial spasm, unspecified

Version 2021 Billable Code

Valid for Submission

G51.39 is a billable code used to specify a medical diagnosis of clonic hemifacial spasm, unspecified. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code G51.39 might also be used to specify conditions or terms like clonic facial spasm or clonic hemifacial spasm or facial spasm or hemifacial spasm.

Short Description:Clonic hemifacial spasm, unspecified
Long Description:Clonic hemifacial spasm, unspecified


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Clonic facial spasm
  • Clonic hemifacial spasm
  • Facial spasm
  • Hemifacial spasm

Replacement Code

G5139 replaces the following previously assigned ICD-10 code(s):

  • G51.3 - Clonic hemifacial spasm

Code Classification

  • Diseases of the nervous system (G00–G99)
    • Nerve, nerve root and plexus disorders (G50-G59)
      • Facial nerve disorders (G51)

Code History

  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

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.

  • Face pain (Medical Encyclopedia)
  • Facial nerve palsy due to birth trauma (Medical Encyclopedia)
  • Facial paralysis (Medical Encyclopedia)
  • Facial trauma (Medical Encyclopedia)

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