G51.9 Disorder of facial nerve, unspecified

Billable ICD-10-CM code, FY2026.

Applies from G51 Facial nerve disorders

Includes

• disorders of 7th cranial nerve

MS-DRG index

Defines the logic of DRG(s) 073-074 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 351.9 Facial nerve disorder, unspecified

Diagnosis Index entries for G51.9

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

Nearby codes

• G51.32 Clonic hemifacial spasm, left
• G51.33 Clonic hemifacial spasm, bilateral
• G51.39 Clonic hemifacial spasm, unspecified
• G51.4 Facial myokymia
• G51.8 Other disorders of facial nerve
• G51.9 Disorder of facial nerve, unspecified (this code)