ICD-10-CM Codes
G00-G99 Diseases of the nervous system
G50-G59 Nerve, nerve root and plexus disorders
G51- Facial nerve disorders
2022 ICD-10-CM Diagnosis Code G51.3

2022 ICD-10-CM Diagnosis Code G51.3

Clonic hemifacial spasm

2016

2017

2018

2019 - Converted to Parent Code

2020

2021

2022

Non-Billable/Non-Specific Code

G51.3 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
The 2022 edition of ICD-10-CM G51.3 became effective on October 1, 2021.
This is the American ICD-10-CM version of G51.3 - other international versions of ICD-10 G51.3 may differ.

The following code(s) above G51.3 contain annotation back-references

Annotation Back-References

In this context, annotation back-references refer to codes that contain:

Applicable To annotations, or
Code Also annotations, or
Code First annotations, or
Excludes1 annotations, or
Excludes2 annotations, or
Includes annotations, or
Note annotations, or
Use Additional annotations

that may be applicable to G51.3:

G00-G99
2022 ICD-10-CM Range G00-G99
Diseases of the nervous system
Type 2 Excludes
- 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)
Diseases of the nervous system
G50-G59
2022 ICD-10-CM Range G50-G59
Nerve, nerve root and plexus disorders
Type 1 Excludes
- 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-)
Nerve, nerve root and plexus disorders
G51
ICD-10-CM Diagnosis Code G51
Facial nerve disorders
Includes
- disorders of 7th cranial nerve
Facial nerve disorders

Approximate Synonyms

Hemifacial spasm
Left clonic hemifacial spasm
Left hemifacial spasm
Right clonic hemifacial spasm
Right hemifacial spasm

Clinical Information

Recurrent clonic contraction of facial muscles, restricted to one side. It may occur as a manifestation of compressive lesions involving the seventh cranial nerve (facial nerve diseases), during recovery from bell palsy, or in association with other disorders. (from Adams et al., Principles of Neurology, 6th ed, p1378)

Code History

2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
2017 (effective 10/1/2016): No change
2018 (effective 10/1/2017): No change
2019 (effective 10/1/2018): Deleted code
2019 (effective 10/1/2018): New code
2020 (effective 10/1/2019): No change
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change

Diagnosis Index entries containing back-references to G51.3:

Bell's
- spasm G51.3-
Myoclonus, myoclonic, myoclonia (familial) (essential) (multifocal) (simplex) G25.3
ICD-10-CM Diagnosis Code G25.3
Myoclonus
Applicable To
Drug-induced myoclonus
Palatal myoclonus
Type 1 Excludes
facial myokymia (G51.4)
myoclonic epilepsy (G40.-)
Use Additional
code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)
- facial G51.3-
Spasm(s) R25.2
- see also condition
ICD-10-CM Diagnosis Code R25.2
Cramp and spasm
Type 2 Excludes
carpopedal spasm (R29.0)
charley-horse (M62.831)
infantile spasms (G40.4-)
muscle spasm of back (M62.830)
muscle spasm of calf (M62.831)
- Bell's G51.3-
- facial G51.3-
- hemifacial G51.3- (clonic)

ICD-10-CM Codes Adjacent To G51.3

G47.9 Sleep disorder, unspecified

G50 Disorders of trigeminal nerve

G50.0 Trigeminal neuralgia

G50.1 Atypical facial pain

G50.8 Other disorders of trigeminal nerve

G50.9 Disorder of trigeminal nerve, unspecified

G51 Facial nerve disorders

G51.0 Bell's palsy

G51.1 Geniculate ganglionitis

G51.2 Melkersson's syndrome

G51.3 Clonic hemifacial spasm

G51.31 …… right

G51.32 …… left

G51.33 …… bilateral

G51.39 …… unspecified

G51.4 Facial myokymia

G51.8 Other disorders of facial nerve

G51.9 Disorder of facial nerve, unspecified

G52 Disorders of other cranial nerves

G52.0 Disorders of olfactory nerve

G52.1 Disorders of glossopharyngeal nerve

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.

2022 ICD-10-CM Diagnosis Code G51.3

Clonic hemifacial spasm

Diseases of the nervous system

Nerve, nerve root and plexus disorders

Facial nerve disorders

Myoclonus

Cramp and spasm