ICD-10 Diagnosis Code G51.0

Bell's palsy

Diagnosis Code G51.0

ICD-10: G51.0
Short Description: Bell's palsy
Long Description: Bell's palsy
This is the 2017 version of the ICD-10-CM diagnosis code G51.0

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

Information for Medical Professionals

Convert to ICD-9 Additional informationCallout TooltipGeneral Equivalence Map
The ICD-10 and ICD-9 GEMs are used to facilitate linking between the diagnosis codes in ICD-9-CM and the new ICD-10-CM code set. The GEMs are the raw material from which providers, health information vendors and payers can derive specific applied mappings to meet their needs.

  • Acute mastoiditis
  • Acute mastoiditis with complication
  • Acute mastoiditis with facial paralysis
  • Bell's palsy
  • Bell's palsy
  • Bell's palsy
  • Bells palsy of left side of face
  • Bells palsy of right side of face
  • Congenital disorder of facial nerve
  • Congenital facial nerve palsy
  • Facial nerve motor disorder
  • Facial palsy
  • Facial palsy House-Brackmann grade 1
  • Facial palsy House-Brackmann grade 2
  • Facial palsy House-Brackmann grade 3
  • Facial palsy House-Brackmann grade 4
  • Facial palsy House-Brackmann grade 5
  • Facial palsy House-Brackmann grade 6
  • Familial facial nerve palsy
  • Nuclear facial nerve paralysis
  • On examination - cranial 7 -paralysis-upper motor neuron
  • Peripheral facial palsy
  • Supranuclear facial nerve paralysis
  • Supranuclear paralysis
  • Unilateral facial paresis

Index of Diseases and Injuries
References found for the code G51.0 in the Index of Diseases and Injuries:

Information for Patients

Bell's Palsy

Bell's palsy is the most common cause of facial paralysis. It usually affects just one side of the face. Symptoms appear suddenly and are at their worst about 48 hours after they start. They can range from mild to severe and include

  • Twitching
  • Weakness
  • Paralysis
  • Drooping eyelid or corner of mouth
  • Drooling
  • Dry eye or mouth
  • Excessive tearing in the eye
  • Impaired ability to taste

Scientists think that a viral infection makes the facial nerve swell or become inflamed. You are most likely to get Bell's palsy if you are pregnant, diabetic or sick with a cold or flu.

Three out of four patients improve without treatment. With or without treatment, most people begin to get better within 2 weeks and recover completely within 3 to 6 months.

NIH: National Institute of Neurological Disorders and Stroke

  • Bell's palsy

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