ICD-10 Code G52 – Disorders of other cranial nerves (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G52 – Disorders of other cranial nerves
What it is
G52 covers disorders affecting cranial nerves other than the optic, oculomotor, trochlear, trigeminal, facial, vestibulocochlear, glossopharyngeal, vagus, accessory, and hypoglossal nerves. Use it when the record identifies a non-specified or other cranial nerve disorder.
Clinical signs
Clinical features vary by nerve involved and may include sensory change, weakness, pain, or abnormal eye, facial, or swallowing function. Check documentation for the specific cranial nerve findings and whether the disorder is isolated or part of a broader neurologic condition.
When to use this code
Use G52 when the provider documents a disorder of an “other” cranial nerve and does not name a more specific code. It may apply when the note describes cranial nerve dysfunction but the exact nerve is not otherwise classified. If the record names the nerve, code the most specific option available.
Do not use for
Do not use G52 for disorders of cranial nerves with their own specific ICD-10-CM codes, such as optic or facial nerve conditions. Do not use it when documentation only supports a general neurologic symptom without a diagnosed cranial nerve disorder.
Coding tip
Review the provider’s note for the exact cranial nerve named, then select the most specific code before defaulting to G52.