ICD-10-CM › G00-G99 › G50-G59 › G51.3 Clonic hemifacial spasm › G51.33
G51.33
Clonic hemifacial spasm, bilateral
ValidICD-10-CM diagnosis code.
Valid for claims with a date of service in the current code year.
What has happened to this code
Every change the publisher made, from 2019 to now.
- FY2019 Added to the code set Clonic hemifacial spasm, bilateral
Official coding rules
Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.
Inherited from G51 Facial nerve disorders
Includes
- disorders of 7th cranial nerve
Inherited from the G50-G59 section Nerve, nerve root and plexus disorders (G50-G59)
Excludes1 - never coded here
- 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-)
How CDC's index refers to this code
Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.
- Bell's > spasm
- Spasm, spastic, spasticity > Bell's
- Spasm, spastic, spasticity > facial
- Spasm, spastic, spasticity > hemifacial
- Myoclonus, myoclonic, myoclonia > facial
Codes in the same group
| Code | Description | Status |
|---|---|---|
| G51.31 | Clonic hemifacial spasm, right | Valid |
| G51.32 | Clonic hemifacial spasm, left | Valid |
| G51.39 | Clonic hemifacial spasm, unspecified | Valid |