G51

Non-Billable

ChapterG00–G99

Rankcategory

Official Description

Facial nerve disorders

Use a more specific code (6 billable, 1 non-billable)

Metadata & Insights

Excludes2(Not included here. Code separately if applicable.)

certain conditions originating in the perinatal period (P04-P96)
certain infectious and parasitic diseases (A00-B99)
complications of pregnancy, childbirth and the puerperium (O00-O9A)
congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
endocrine, nutritional and metabolic diseases (E00-E88)
injury, poisoning and certain other consequences of external causes (S00-T88)
neoplasms (C00-D49)
symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Excludes1(Not coded here. Use a different code.)

current traumatic nerve, nerve root and plexus disorders - see Injury, nerve by body region
neuralgia NOS (M79.2)
neuritis NOS (M79.2)
peripheral neuritis in pregnancy (O26.82-)
radiculitis NOS (M54.1-)

Includes

BillableHas subcodes

CH6Diseases of the nervous system (G00-G99)

G50-G59Nerve, nerve root and plexus disorders (G50-G59)

G51Facial nerve disordersNot billable

G51.0Bell's palsyBillable

G51.1Geniculate ganglionitisBillable

G51.2Melkersson's syndromeBillable

G51.3Clonic hemifacial spasmSubcodes

G51.4Facial myokymiaBillable

G51.8Other disorders of facial nerveBillable

G51.9Disorder of facial nerve, unspecifiedBillable

The following parent sections contain instructions or notes that apply to G51:

Nerve, nerve root and plexus disorders (G50-G59)

chapterCH6

Diseases of the nervous system (G00-G99)

2026

No direct MS-DRG triggers identified.

Find surgical and procedural codes related to Facial nerve disorders.