G51.4Billable
Facial myokymia
- Chapter
- 6. Diseases of the nervous system
- Category
- G51
- Effective date
- October 1, 2026
Related codes in category G51
G51Facial nerve disordersG51.0Bell's palsyYesG51.1Geniculate ganglionitisYesG51.2Melkersson's syndromeYesG51.3Clonic hemifacial spasmG51.31Clonic hemifacial spasm, rightYesG51.32Clonic hemifacial spasm, leftYesG51.33Clonic hemifacial spasm, bilateralYesG51.39Clonic hemifacial spasm, unspecifiedYesG51.8Other disorders of facial nerveYesG51.9Disorder of facial nerve, unspecifiedYes
Frequently asked questions
What is ICD-10 code G51.4?
G51.4 is an ICD-10-CM diagnosis code for Facial myokymia.
Is G51.4 a billable code?
Yes. G51.4 is billable and specific enough to be used on a claim.
What ICD-10-CM chapter is G51.4 in?
G51.4 falls under Chapter 6: Diseases of the nervous system.
When did G51.4 become effective?
G51.4 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to G51.4?
G51.4 belongs to category G51, which includes 11 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.