ICD-10 Code G50.8 – Other disorders of trigeminal nerve (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G50.8 – Other disorders of trigeminal nerve
What it is
G50.8 identifies trigeminal nerve disorders that do not fit a more specific ICD-10 category. Use it for documented abnormalities of the fifth cranial nerve when the record does not support a different trigeminal diagnosis.
Clinical signs
Clinical features vary; refer to documentation. Findings may include facial pain, sensory changes, or other trigeminal nerve dysfunction, but you should code only what is clearly described in the chart.
When to use this code
Use G50.8 when the clinician documents an unspecified or other trigeminal nerve disorder and no more specific code applies. It is appropriate when the note identifies trigeminal nerve involvement but does not name trigeminal neuralgia or another defined condition. Check documentation for laterality and exact terminology.
Do not use for
Do not use this code for classic trigeminal neuralgia or other specifically named cranial nerve disorders. If the documentation is vague or incomplete, check documentation rather than assuming trigeminal nerve disease.
Coding tip
Match the code to the exact provider wording and avoid upgrading nonspecific facial pain to trigeminal disorder without clear documentation.