2027 ICD-10-CM Diagnosis Code G50Disorders of trigeminal nerve

ICD-10-CM Codes›G00–G99›G50-G59›G50

ICD-10-CM G50
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

G50 is a non-billable ICD-10-CM category code for disorders of trigeminal nerve, so it cannot be submitted on claims. Use a more specific code from this category instead, such as G50.0, G50.1, G50.8, and G50.9.

Code Identity

ICD-10-CM Code
G50
Billable Status
No — Non-Billable Category
Code Describes
Disorders of trigeminal nerve
Short Description
Disorders of trigeminal nerve
Same as the full description in the CMS dataset.
Chapter
G50-G59
Nerve, nerve root and plexus disorders

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG50-G59Nerve, nerve root and plexus disorders
CategoryG50Disorders of trigeminal nerve
This CodeG50Disorders of trigeminal nerve

Specific Coding for Disorders of trigeminal nerveOverview

Non-specific codes like G50 require more characters. Use one of these billable codes instead:

  • Use G50.0 for Trigeminal neuralgia

  • Use G50.1 for Atypical facial pain

  • Use G50.8 for Other disorders of trigeminal nerve

  • Use G50.9 for Disorder of trigeminal nerve, unspecified

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to G50: its own notes plus those printed at block G50-G59 and Chapter 6. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

  • disorders of 5th cranial nerve

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From Block G50-G59 Nerve, nerve root and plexus disorders applies to 106 codes
  • 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-)

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 6 (G00-G99) Diseases of the nervous system applies to 700 codes
  • 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)

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

Patient EducationClinical

Peripheral Nerve Disorders

Nerves are like wires that carry messages back and forth between your brain and your body. Your peripheral nerves branch off from your brain and spinal cord and connect to all parts of your body, including your muscles and organs.

The full article covers:

  • What are peripheral nerves?
  • What are peripheral nerve disorders?
  • What causes peripheral nerve disorders?
  • What are the symptoms of peripheral nerve disorders?
  • How are peripheral nerve disorders diagnosed?
  • What are the treatments for peripheral nerve disorders?
  • Can peripheral nerve disorders be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About G50Overview

What is the ICD-10 code for disorders of trigeminal nerve?

G50 is the ICD-10-CM category for disorders of trigeminal nerve, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is G50 (Disorders of trigeminal nerve) a billable code?

No. This is a category header that groups the codes for disorders of trigeminal nerve, and headers cannot be submitted on claims. Claims for disorders of trigeminal nerve need a more specific code from this category, such as G50.0, G50.1, and G50.8.

Can G50 be reported with M79.2?

Not as a rule. The Excludes1 note at block G50-G59, which applies to G50, lists "neuralgia NOS (M79.2)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).