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G51 Facial nerve disorders

ICD-10-CM category G51 sits in Chapter 6 (Diseases of the nervous system, G00-G99). It contains 10 billable codes for FY2027, effective October 1, 2026 to September 30, 2027. Always code to the most specific code available: a code with more characters that describes the diagnosis more precisely takes priority over a shorter one.

Subcategories

G51.3 Clonic hemifacial spasm

Billable codes in G51

CodeDescription
G51.0Bell's palsy
G51.1Geniculate ganglionitis
G51.2Melkersson's syndrome
G51.31Clonic hemifacial spasm, right
G51.32Clonic hemifacial spasm, left
G51.33Clonic hemifacial spasm, bilateral
G51.39Clonic hemifacial spasm, unspecified
G51.4Facial myokymia
G51.8Other disorders of facial nerve
G51.9Disorder of facial nerve, unspecified

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