2020 ICD-10-CM Diagnosis Code G50

Disorders of trigeminal nerve

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • G50 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM G50 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of G50 - other international versions of ICD-10 G50 may differ.
Includes
Includes Help
"Includes" further defines, or give examples of, the content of the code or category.
  • disorders of 5th cranial nerve
The following code(s) above G50 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:
  • G00-G99
    2020 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
    2020 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
Clinical Information
  • A disorder characterized by involvement of the trigeminal nerve (fifth cranial nerve).
  • A non-neoplastic or neoplastic disorder affecting the trigeminal nerve (fifth cranial nerve).
  • Diseases of the trigeminal nerve or its nuclei, which are located in the pons and medulla. The nerve is composed of three divisions: ophthalmic, maxillary, and mandibular, which provide sensory innervation to structures of the face, sinuses, and portions of the cranial vault. The mandibular nerve also innervates muscles of mastication. Clinical features include loss of facial and intra-oral sensation and weakness of jaw closure. Common conditions affecting the nerve include brain stem ischemia, infratentorial neoplasms, and trigeminal neuralgia.
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
ICD-10-CM Codes Adjacent To G50
G47.53 Recurrent isolated sleep paralysis
G47.54 …… in conditions classified elsewhere
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

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