2021 ICD-10-CM Diagnosis Code G50.1

Atypical facial pain

    2016 2017 2018 2019 2020 2021 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 2021 edition of ICD-10-CM G50.1 became effective on October 1, 2020.
  • 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
    2021 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
    2021 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

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    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 v38.0):
  • 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
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
Code annotations containing back-references to G50.1:
  • Type 2 Excludes: R51
    , G44
    , G89
    ICD-10-CM Diagnosis Code R51

    Headache

      2016 2017 2018 2019 2020 2021 - Converted to Parent Code Non-Billable/Non-Specific Code
    Type 2 Excludes
    • atypical face pain (G50.1)
    • migraine and other headache syndromes (G43-G44)
    • trigeminal neuralgia (G50.0)
    ICD-10-CM Diagnosis Code G44

    Other headache syndromes

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    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

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    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

Diagnosis Index entries containing back-references to G50.1:
  • Pain(s) R52
    - see also Painful
    ICD-10-CM Diagnosis Code R52

    Pain, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    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 (R51.9)
    • 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 R51.9
      ICD-10-CM Diagnosis Code R51.9

      Headache, unspecified

        2021 - New Code Billable/Specific Code
      Applicable To
      • Facial pain NOS
      • atypical G50.1
  • Tic (disorder) F95.9
    ICD-10-CM Diagnosis Code F95.9

    Tic disorder, unspecified

      2016 2017 2018 2019 2020 2021 Billable/Specific Code
    Applicable To
    • Tic NOS
    • douloureux G50.0
      ICD-10-CM Diagnosis Code G50.0

      Trigeminal neuralgia

        2016 2017 2018 2019 2020 2021 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.