ICD-10-CM Codes
G00-G99 Diseases of the nervous system
G50-G59 Nerve, nerve root and plexus disorders
G50- Disorders of trigeminal nerve

2018/2019 ICD-10-CM Diagnosis Code G50.1

Atypical facial pain

2016

2017

2018

2019

Billable/Specific Code

G50.1 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2018/2019 edition of ICD-10-CM G50.1 became effective on October 1, 2018.
This is the American ICD-10-CM version of G50.1 - other international versions of ICD-10 G50.1 may differ.

The following code(s) above G50.1 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 G50.1:

G00-G99
2019 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
2019 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
G50
ICD-10-CM Diagnosis Code G50
Disorders of trigeminal nerve
Includes
- disorders of 5th cranial nerve
Disorders of trigeminal nerve

Approximate Synonyms

Atypical face pain

ICD-10-CM G50.1 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):

073 Cranial and peripheral nerve disorders with mcc
074 Cranial and peripheral nerve disorders without mcc

Convert G50.1 to ICD-9-CM

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): No change

Code annotations containing back-references to G50.1:

Type 1 Excludes: R51

ICD-10-CM Diagnosis Code R51
Headache
Applicable To
- Facial pain NOS
Type 1 Excludes
- atypical face pain (G50.1)
- migraine and other headache syndromes (G43-G44)
- trigeminal neuralgia (G50.0)
Type 2 Excludes: G44
, G89

ICD-10-CM Diagnosis Code G44
Other headache syndromes
Type 1 Excludes
- headache NOS (R51)
Type 2 Excludes
- atypical facial pain (G50.1)
- headache due to lumbar puncture (G97.1)
- migraines (G43.-)
- trigeminal neuralgia (G50.0)
ICD-10-CM Diagnosis Code G89
Pain, not elsewhere classified
Code Also
- related psychological factors associated with pain (F45.42)
Type 1 Excludes
- generalized pain NOS (R52)
- pain disorders exclusively related to psychological factors (F45.41)
- pain NOS (R52)
Type 2 Excludes
- atypical face pain (G50.1)
- headache syndromes (G44.-)
- localized pain, unspecified type - code to pain by site, such as:
- abdomen pain (R10.-)
- back pain (M54.9)
- breast pain (N64.4)
- chest pain (R07.1-R07.9)
- ear pain (H92.0-)
- eye pain (H57.1)
- headache (R51)
- joint pain (M25.5-)
- limb pain (M79.6-)
- lumbar region pain (M54.5)
- painful urination (R30.9)
- pelvic and perineal pain (R10.2)
- shoulder pain (M25.51-)
- spine pain (M54.-)
- throat pain (R07.0)
- tongue pain (K14.6)
- tooth pain (K08.8)
- renal colic (N23)
- migraines (G43.-)
- myalgia (M79.1-)
- pain from prosthetic devices, implants, and grafts (T82.84, T83.84, T84.84, T85.84-)
- phantom limb syndrome with pain (G54.6)
- vulvar vestibulitis (N94.810)
- vulvodynia (N94.81-)

Diagnosis Index entries containing back-references to G50.1:

Pain(s) R52
- see also Painful
ICD-10-CM Diagnosis Code R52
Pain, unspecified
Applicable To
Acute pain NOS
Generalized pain NOS
Pain NOS
Type 1 Excludes
acute and chronic pain, not elsewhere classified (G89.-)
localized pain, unspecified type - code to pain by site, such as:
abdomen pain (R10.-)
back pain (M54.9)
breast pain (N64.4)
chest pain (R07.1-R07.9)
ear pain (H92.0-)
eye pain (H57.1)
headache (R51)
joint pain (M25.5-)
limb pain (M79.6-)
lumbar region pain (M54.5)
pelvic and perineal pain (R10.2)
shoulder pain (M25.51-)
spine pain (M54.-)
throat pain (R07.0)
tongue pain (K14.6)
tooth pain (K08.8)
renal colic (N23)
pain disorders exclusively related to psychological factors (F45.41)
- face, facial R51
  ICD-10-CM Diagnosis Code R51
  Headache
  2016 2017 2018 2019 Billable/Specific Code
  Applicable To
  Facial pain NOS
  Type 1 Excludes
  atypical face pain (G50.1)
  migraine and other headache syndromes (G43-G44)
  trigeminal neuralgia (G50.0)
  - atypical G50.1
Tic (disorder) F95.9
ICD-10-CM Diagnosis Code F95.9
Tic disorder, unspecified
Applicable To
Tic NOS
- douloureux G50.0
  ICD-10-CM Diagnosis Code G50.0
  Trigeminal neuralgia
  2016 2017 2018 2019 Billable/Specific Code
  Applicable To
  Syndrome of paroxysmal facial pain
  Tic douloureux
  - atypical G50.1

ICD-10-CM Codes Adjacent To G50.1

G47.59 Other parasomnia

G47.6 Sleep related movement disorders

G47.61 Periodic limb movement disorder

G47.62 Sleep related leg cramps

G47.63 Sleep related bruxism

G47.69 Other sleep related movement disorders

G47.8 Other sleep disorders

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

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

2018/2019 ICD-10-CM Diagnosis Code G50.1

Atypical facial pain

Diseases of the nervous system

Nerve, nerve root and plexus disorders

Disorders of trigeminal nerve

Headache

Other headache syndromes

Pain, not elsewhere classified

Pain, unspecified

Headache

Tic disorder, unspecified

Trigeminal neuralgia