G50.0 Trigeminal neuralgia

The ICD-10-CM code for Trigeminal neuralgia is G50.0 (FY2026). It is a billable, claim-ready diagnosis code.

Classification

Chapter

6: Diseases of the nervous system (G00-G99)

Section

G50-G59: Nerve, nerve root and plexus disorders (G50-G59)

Category G50

5 codes (4 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to G50.0:

• Spasm (s), spastic, spasticity › nerve, trigeminal
• Syndrome › facial pain, paroxysmal
• Neuralgia, neuralgic (acute) › trigeminal
• Tic (disorder) › douloureux
• Syndrome › paroxysmal facial pain

Inclusion Terms

• Syndrome of paroxysmal facial pain
• Tic douloureux

U.S. Hospital Utilization

• An estimated 38,785 U.S. inpatient stays in 2023 included G50.0 among the documented diagnoses.
• 5,370 stays listed it as the principal diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

Official Coding Guidelines

Dominant/nondominant side (TOC entry)

a. Dominant/nondominant side ................................................................................................. 45

Pain - Category G89 (TOC entry)

b. Pain - Category G89.............................................................................................................. 45

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)