Disorders of trigeminal nerve (G50) ICD-10-CM
The G50 code range covers disorders of trigeminal nerve with 5 ICD-10-CM diagnosis codes. 4 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- disorders of 5th cranial nerve
Codes in the G50 Range 5 codes · 4 billable
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the G50 range.
Trigeminal Neuralgia
A syndrome characterized by recurrent episodes of excruciating pain lasting several seconds or longer in the sensory distribution of the TRIGEMINAL NERVE. Pain may be initiated by stimulation of trigger points on the face, lips, or gums or by movement of facial muscles or chewing. Associated conditions include MULTIPLE SCLEROSIS, vascular anomalies, ANEURYSMS, and neoplasms. (Adams et al., Principles of Neurology, 6th ed, p187)
About the G50 Code Range
The ICD-10 code section G50 covers various disorders of the trigeminal nerve, a major nerve responsible for sensation and motor function in the face. This section is used to classify conditions like trigeminal neuralgia, atypical facial pain, and other specific or unspecified trigeminal nerve disorders.
The ICD-10 code for trigeminal neuralgia (G50.0) includes conditions commonly described as fifth cranial nerve pain, idiopathic or secondary trigeminal neuralgia, and related terms such as left or right trigeminal neuralgia. These codes help identify severe facial pain originating from the trigeminal nerve. Code G50.1 is designated for atypical facial pain that cannot be classified as typical neuralgia. Code G50.8 covers a variety of other trigeminal nerve disorders, including conditions like trigeminal nerve palsy, mandibular nerve disorders, and gustatory sweating (gustatory hyperhidrosis). When the specific disorder is not clear, G50.9 is used for unspecified trigeminal nerve disorders, which can also relate to terms such as trigeminal trophic syndrome and abnormal nerve function. Understanding these synonyms is crucial for medical coders seeking the correct ICD-10 code for trigeminal nerve-related conditions.
Questions About This Page
How many billable codes are in the G50 range?
Of the 5 codes in this range, 4 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the G50 range classify?
The range classifies disorders of trigeminal nerve. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
