2021 ICD-10-CM Code G51.33

Clonic hemifacial spasm, bilateral

Version 2021
Billable Code

Valid for Submission

G51.33 is a billable diagnosis code used to specify a medical diagnosis of clonic hemifacial spasm, bilateral. The code G51.33 is valid during the fiscal year 2021 from October 01, 2020 through September 30, 2021 for the submission of HIPAA-covered transactions.

ICD-10:G51.33
Short Description:Clonic hemifacial spasm, bilateral
Long Description:Clonic hemifacial spasm, bilateral

Code Classification

Replacement Code

G5133 replaces the following previously assigned ICD-10 code(s):

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