MCMedicalCodingSoftware
G51.9

G51.9: Disorder of facial nerve, unspecified

Billable / specific codeICD-10-CM

G51.9 is a billable, specific ICD-10-CM code for disorder of facial nerve, unspecified. It is valid for submission on a claim.

Check G51.9 with the rest of the claim: free scrubber

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

G51.9 is named in 6 Medicare coverage policies: 6 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

  • A56439Billing and Coding: Blepharoplasty
  • A56612Billing and Coding: CT of the Head
  • A56619Billing and Coding: Nerve Conduction Studies and Electromyography
  • A56868Billing and Coding: Outpatient Speech Language Pathology

Alphabetic index entries that lead here

  • Disease, diseased›facial nerve(seventh)
  • Neuropathy, neuropathic›facial nerve
  • Disorder›nerve›facial
  • Lesion›cranial nerve›seventh

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under G51

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.